CN104915994A - 3D view drawing method and system of three-dimensional data - Google Patents
3D view drawing method and system of three-dimensional data Download PDFInfo
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Abstract
The invention brings forward a 3D view drawing method and system of three-dimensional data. The method comprises: parsing an obtained three-dimensional data file into three-dimensional data matching a 3D engine and transmitting the data to the 3D engine; and invoking a drawing instruction of the 3D engine and drawing a 3D left-eye view and a 3D right-eye view of the three-dimensional data. According to the invention, on the basis of combination of the intelligent terminal with the 3D engine, a 3D view for carrying out combination to obtain a lifelike three-dimensional image of an object can be obtained; and the user can watch details in the complex three-dimensional object visually based on combination of the drawn 3D left-eye view and 3D right-eye view. The method and system can be realized in a mobile terminal without being limited by a geographical condition. Because of the interactive design, the 3D view drawn for the three-dimensional data can be rotated, translated, and zoomed conveniently by the user in real time based on gesture operations, so that the user experience can be improved.
Description
Technical field
The present invention relates to three-dimensional data process field, particularly relate to a kind of 3D View Drawing method and system of three-dimensional data.
Background technology
At present, the three-dimensional object model information utilizing professional three-dimensional software to design is three-dimensional, due to the limitation of display technique, can only on the display of plane by show have perspective, illumination, colouring information planimetric map show the three-dimensional information of object, and do not look map generalization by 3D engine implementation 3D.Show with planimetric map, to the relatively simple object of structure, object information can also be shown preferably, but for comparatively complicated object, as engine construction figure etc., because details is too many, the three-dimensional perceived effect that planimetric map shows is just not ideal enough.Sales industry personnel, when sold product cannot carry because of restrictions such as volume weights, also cannot be shown very well by data.In 3D printing, user is obtaining three-dimensional data file, and before printing, preview effect is directly perceived not, needs three-dimensional data to be depicted as view.
Summary of the invention
The embodiment of the present invention provides a kind of 3D View Drawing method and system of three-dimensional data, for solving in prior art: the problem of being looked map generalization by the 3D of 3D engine implementation three-dimensional data.
The embodiment of the present invention is by the following technical solutions:
A 3D View Drawing method for three-dimensional data, the method comprises:
By the three-dimensional data of the form that the three-dimensional data document analysis got becomes to mate with 3D engine, and send described 3D engine to;
Call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
Preferably, described three-dimensional data file is the three-dimensional data file that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Preferably, described in call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data, comprising:
3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D right-eye view of described three-dimensional data;
3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D left-eye view of described three-dimensional data.
Preferably, described left eye direction of visual lines for simulating people and the described right eye direction of visual lines for simulating people are the direction of the object default center pointing to three-dimensional data from described camera position, and described left eye direction of visual lines for simulating people and described right eye direction of visual lines difference 2 to 10 degree for simulating people.
Preferably, described in call the drawing for order of described 3D engine before, also comprise:
Obtain the 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area;
The 3D left-eye view of the described three-dimensional data of described drafting and 3D right-eye view, comprising:
Judge the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting, if so, then draw the corresponding region of described 3D right-eye view at described pixel region, if not, then the corresponding region of described 3D left-eye view is drawn at described pixel region.
Preferably, described in call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data, comprising:
Got the operational order feature of user's input by touch screen, according to Predistribution Algorithm, described operational order feature is processed, upgrade the drawing for order parameter of described 3D engine;
For obtained 3D engine drawing for order parameter call described in the drawing for order of 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
Preferably, the described operational order feature being got user's input by touch screen, is processed described operational order feature according to Predistribution Algorithm, upgrades the corresponding drawing for order parameter of described 3D engine, comprising:
If by the rotation process instruction vector that touch screen Real-time Obtaining inputs to user, then process described rotation process instruction features vector according to preset Rotation Algorithm, upgrade camera position parameter and the camera line of sight parameters of described 3D engine;
If by the translation instruction vector that touch screen Real-time Obtaining inputs to user, then process described translation instruction vector according to preset translation algorithm, upgrade camera position parameter and the convergent-divergent reference point of described 3D engine;
If by the zoom operations instruction distance that touch screen Real-time Obtaining inputs to user, then process described zoom operations instruction distance according to preset convergent-divergent algorithm, upgrade the zoom factor of described 3D engine.
A 3D View Drawing system for three-dimensional data, this system comprises:
Resolution unit, for the three-dimensional data of form becoming to mate with 3D engine by the three-dimensional data got document analysis, and sends described 3D engine to;
View Drawing unit, for calling the drawing for order of described 3D engine, draws 3D left-eye view and the 3D right-eye view of described three-dimensional data.
Preferably, described three-dimensional data file is the three-dimensional data file that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Preferably, View Drawing unit, specifically for:
3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D right-eye view of described three-dimensional data;
3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D left-eye view of described three-dimensional data.
Preferably, also comprise viewing area acquiring unit, for obtaining 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area;
Described View Drawing unit, specifically for: the drawing for order calling described 3D engine, judge the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting, if, the corresponding region of described 3D right-eye view is then drawn at described pixel region, if not, then the corresponding region of described 3D left-eye view is drawn at described pixel region.
Preferably, described View Drawing unit comprises:
Parameter update module, for being got the operational order feature of user's input by touch screen, is processed described operational order feature according to Predistribution Algorithm, upgrades the drawing for order parameter of described 3D engine;
Upgrade drafting module, for the drawing for order of 3D engine described in the drawing for order parameter call for obtained 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
Compared with prior art, the 3D View Drawing method and system of a kind of three-dimensional data of the present invention, there is following beneficial effect: by intelligent terminal in conjunction with 3D engine, the 3D view for being combined into object stereopsis true to nature can be obtained, the combination making user pass through 3D left-eye view and the 3D right-eye view of drawing can see the details in complex three-dimensional object intuitively, can realize in the terminal, do not limit by geographical conditions, employing can interaction design, be convenient to user's gesture operation rotate in real time, translation, convergent-divergent may correspond to the 3D view generating different visual angles and scaling, Consumer's Experience is better.If the 3D left eye figure viewing area obtained on bore hole 3D display screen and 3D right eye figure viewing area, then can by judging that drafting speed is improved in the viewing area of drawing pixel region corresponding.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the method flow diagram one of first embodiment of the 3D View Drawing method of a kind of three-dimensional data provided by the invention.
Fig. 2 is the method flow diagram two of first embodiment of the 3D View Drawing method of a kind of three-dimensional data provided by the invention.
Fig. 3 is the method flow diagram of second embodiment of the 3D View Drawing method of a kind of three-dimensional data provided by the invention.
Fig. 4 is the structured flowchart one of first embodiment of the 3D View Drawing system of a kind of three-dimensional data provided by the invention.
Fig. 5 is the structured flowchart two of first embodiment of the 3D View Drawing system of a kind of three-dimensional data provided by the invention.
Fig. 6 is the structured flowchart of second embodiment of the 3D View Drawing system of a kind of three-dimensional data provided by the invention.
Embodiment
The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It is the method flow diagram of 3D View Drawing method first embodiment of a kind of three-dimensional data provided by the invention see Fig. 1, Fig. 1.The method of the present embodiment performs primarily of intelligent terminal.Wherein, the hardware unit of described intelligent terminal includes but not limited to: PC, notebook computer, mobile phone, panel computer etc.This intelligent terminal can be bore hole 3D display screen for the display screen with post mirror or grating, and also can be regular display screen, this embodiment comprises the following steps:
Step 101: by the three-dimensional data of the form that the three-dimensional data document analysis got becomes to mate with 3D engine, and send 3D engine to.
Wherein, three-dimensional data file is that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Such as, in Anroid platform, at least one stl formatted file and/or at least one obj formatted file are resolved to the three-dimensional data of mating with opengl es engine, and send opengl es engine to.Concrete, read at least one stl formatted file and/or at least one obj formatted file, three-dimensional coordinate data wherein, texture coordinate data, vertex scheme vector digital independent are reassembled into the receivable data mode of opengl es engine interface (a kind of array form) to internal memory.Because the Method of Data Organization of different-format is different, so when reading, can according to the organizational form of each form, find the data that display needs, read into opengl es engine, be convenient to be applied in the achievements exhibition of 3D design or the preview in early stage of 3D printing, and can, be shown anywhere or anytime by Android platform without geographical constraintsly.Concrete analytic method can realize for those skilled in the art, does not repeat them here.
Step 102: the drawing for order calling 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.3D left-eye view is the view of the 3D object that simulation people left eye is seen, 3D right-eye view is the view of the 3D object that simulation people right eye is seen.
Wherein, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view, be specially 3D left-eye view and the 3D right-eye view of drawing three-dimensional data on the display module preset, display module is a video window on screen.
Preferably, as shown in Figure 2, as a kind of preferred version, if the screen of intelligent terminal is bore hole 3D display screen, then before step 102, also comprise step 120: obtain the 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area, concrete, 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area can be obtained according to the arrangement position of bore hole 3D display screen upper prop mirror or grating.Wherein, in 3D left eye figure viewing area, display image reflects to left eye region by bore hole 3D display screen upper prop mirror or grating, and in 3D right eye figure viewing area, bore hole 3D shows upper prop mirror or display image reflects to right eye region by grating screen.Wherein, left eye region is the desirable viewing areas of user's left eye when using bore hole 3D display screen, and right eye region is the desirable viewing areas of user's left eye when using bore hole 3D display screen.
Now step 102 is specially: the drawing for order calling 3D engine, when the 3D left-eye view of drawing three-dimensional data and 3D right-eye view, the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting can be judged, if, then in the corresponding region of pixel region drafting 3 D right-eye view, if not, then in the corresponding region of pixel region drafting 3 D left-eye view.
In the corresponding region of this pixel region drafting 3 D left-eye view, be specially: the 3D engine camera position parameter for the left eye position for simulating people of presetting and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, in the corresponding region of this pixel region drafting 3 D left-eye view.
In the corresponding region of this pixel region drafting 3 D right-eye view, be specially: the 3D engine camera position parameter for the right eye position for simulating people of presetting and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, in the corresponding region of this pixel region drafting 3 D right-eye view.
Also the drawing for order of 3D engine can directly be called, the view picture 3D left-eye view of drawing three-dimensional data and view picture 3D right-eye view, the screen that the method is also applicable to intelligent terminal is common display screen, after then drawing view picture 3D left-eye view and view picture 3D right-eye view, the algorithms most in use of 3D technology can be passed through again by view picture 3D left-eye view and the proper 3D view of view picture 3D right-eye view overlap-add procedure, the stereoeffect of this 3D view can be seen by wearing 3D glasses, be more than prior art, do not repeat them here.
Concrete, the 3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D right-eye view of drawing three-dimensional data; 3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data.3D right-eye view and the drafting 3 D right-eye view of drawing three-dimensional data do not limit sequencing.
Wherein, 3D engine can be but the opengl es engine be not limited in Anroid platform, before 3D engine is drawn, 3D engine interface can be utilized, data are transmitted to 3D engine, following data as in opengl es engine: three-dimensional coordinate data, vertex scheme vector data, texture coordinate data, the locus of lighting source, the displacement of object all directions, the angle that object rotates relative to original coordinates, the locus of camera, camera towards, the spatial dimension of display, the projection pattern of display, zoom factor, texture picture etc., after these data of 3D engine accepts, can automatically on the display module preset, draw the subject image of needs.In opengl es engine, 3D engine camera position parameter for the right eye position or left eye position of simulating people be camera locus and for the 3D engine camera direction parameter of the right eye sight line of simulating people or left eye direction of visual lines be camera towards, when 3D left-eye view and the 3D right-eye view of drawing three-dimensional data, in opengl es engine, other parameters are all identical, only the locus of camera and camera towards different, the 3D left-eye view drawn out and 3D right-eye view differ a parallax.
It is the method flow diagram of 3D View Drawing method second embodiment of a kind of three-dimensional data provided by the invention see Fig. 3, Fig. 3.The method of the present embodiment performs primarily of intelligent terminal.Wherein, the hardware unit of described intelligent terminal includes but not limited to: PC, notebook computer, mobile phone, panel computer etc.This intelligent terminal can be bore hole 3D display screen for the display screen with post mirror or grating, also can be regular display screen, compared to 3D View Drawing method first embodiment of a kind of three-dimensional data, design that can be mutual is added in this embodiment, be convenient to user's gesture operation different angles and observe object, rotation that can be real-time, translation, object observed by convergent-divergent.This embodiment comprises the following steps:
Step 201: by the three-dimensional data of the form that the three-dimensional data document analysis got becomes to mate with 3D engine, and send described 3D engine to.
Wherein, three-dimensional data file is that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Such as, in Anroid platform, at least one stl formatted file and/or at least one obj formatted file are resolved to the three-dimensional data of mating with opengl es engine, and send opengl es engine to.Concrete, read at least one stl formatted file and/or at least one obj formatted file, three-dimensional coordinate data wherein, texture coordinate data (also can not having), vertex scheme vector digital independent are reassembled into the receivable data mode of opengl es engine interface (a kind of array form) to internal memory.Because the Method of Data Organization of different-format is different, so when reading, can according to the organizational form of each form, find the data that display needs, read into opengl es engine, be convenient to be applied in the achievements exhibition of 3D design or the preview in early stage of 3D printing, and can, be shown anywhere or anytime by Android platform without geographical constraintsly.Concrete analytic method can realize for those skilled in the art, does not repeat them here.
Step 202: the drawing for order calling 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.3D left-eye view is the view of the 3D object that simulation people left eye is seen, 3D right-eye view is the view of the 3D object that simulation people right eye is seen.
Preferably, step 221 and step 222 is comprised.
Step 221: the operational order feature being got user's input by touch screen, is processed operational order feature according to Predistribution Algorithm, upgrades the corresponding drawing for order parameter of 3D engine.
Concrete, according to Predistribution Algorithm, operational order feature is processed, upgrades the corresponding drawing for order parameter of 3D engine, comprising:
If by the rotation process instruction vector that touch screen Real-time Obtaining inputs to user, then process described rotation process instruction features vector according to preset Rotation Algorithm, upgrade camera position parameter and the camera line of sight parameters of described 3D engine;
Such as, in opengl es engine in Anroid platform, if the one hand inputted to user by touch screen Real-time Obtaining refers to sliding vector, preset and rotate (can certainly be set to rotate around other axles) around z-axis, one hand refers to that the pixel quantity of the x-axis component of sliding vector is multiplied by unit picture element angle and obtains the x-axis anglec of rotation, one hand refers to that the pixel quantity of the y-axis component of sliding vector is multiplied by unit picture element angle as the y-axis anglec of rotation, upgrade the angle that object rotates relative to original coordinates, be equivalent to the camera position parameter and the camera line of sight parameters that have updated 3D engine.
If by the translation instruction vector that touch screen Real-time Obtaining inputs to user, then process translation instruction vector according to preset translation algorithm, upgrade camera position parameter and the convergent-divergent reference point of 3D engine;
Such as, in opengl es engine in Anroid platform, if after choosing the translation instrument in screen, the one hand inputted to user by touch screen Real-time Obtaining refers to sliding vector, default z-axis maintains static, one hand refers to that the pixel quantity of the x-axis component of sliding vector is multiplied by unit picture element length and obtains x-axis translation distance, one hand refers to that the pixel quantity of the y-axis component of sliding vector is multiplied by unit picture element length as y-axis translation distance, by the locus of camera to the translation of singlehanded sliding vector reverse direction, respectively along x-axis translation x-axis translation distance with along y-axis translation y-axis translation distance, convergent-divergent reference point is due in the past on the 3D object, also respectively to reverse direction along x-axis translation x-axis translation distance with along y-axis translation y-axis translation distance, finally obtain the locus of camera and the convergent-divergent reference point of 3D data that upgrade 3D engine.
If by the zoom operations instruction distance that touch screen Real-time Obtaining inputs to user, then process described zoom operations instruction distance according to preset convergent-divergent algorithm, upgrade the zoom factor of 3D engine.
Such as, in opengl es engine in Anroid platform, if to be referred to the distance in sliding process to the both hands that user inputs by touch screen Real-time Obtaining, 3D engine using current two distances referred to last time two span from ratio be multiplied by the zoom factor drawn of last time as scaling, have updated the zoom factor of 3D engine.
Step 222: for the drawing for order of the drawing for order parameter call 3D engine of obtained 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.
Concrete, for in the drawing for order parameter of the 3D engine after upgrading for simulate the right eye position of people 3D engine camera position parameter and for the 3D engine camera direction parameter of the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D right-eye view of drawing three-dimensional data.
For in the drawing for order parameter of the 3D engine after upgrading for simulate the left eye position of people 3D engine camera position parameter and for the 3D engine camera direction parameter of the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data.
Wherein, 3D engine can be but the opengl es engine be not limited in Anroid platform, before 3D engine is drawn, 3D engine interface can be utilized, data are transmitted to 3D engine, following data as in opengl es engine: three-dimensional coordinate data, vertex scheme vector data, texture coordinate data, the locus of lighting source, the displacement of object all directions, the angle that object rotates relative to original coordinates, the locus of camera, camera towards, the spatial dimension of display, the projection pattern of display, zoom factor, texture picture etc., after these data of 3D engine accepts, can automatically on the display module preset, draw the subject image of needs.In opengl es engine, 3D engine camera position parameter for the right eye position or left eye position of simulating people be camera locus and for the 3D engine camera direction parameter of the right eye sight line of simulating people or left eye direction of visual lines be camera towards, when 3D left-eye view and the 3D right-eye view of drawing three-dimensional data, in opengl es engine, other parameters are all identical, only the locus of camera and camera towards different, the 3D left-eye view drawn out and 3D right-eye view differ a parallax.
In the present embodiment, for simulating the 3D engine camera position parameter of left eye position and being 5 to 6 times of object maximum gauge for the distance of the object default center of the 3D engine camera position parameter and three-dimensional data of simulating right eye position, the direction of the object default center pointing to three-dimensional data from camera position is for simulating the left eye direction of visual lines of people and the right eye direction of visual lines for simulating people, and for the left eye direction of visual lines of simulating people and right eye direction of visual lines difference 2 to 8 degree for simulating people, preferably difference about 6 degree.
Such as, the object default center of three-dimensional data is true origin, distance for the object default center of the 3D engine camera position parameter and three-dimensional data of simulating right eye position is 5 times of object maximum gauge, for simulating the 3D engine camera position parameter A of right eye position be then: A=[sin (a) * 5b, 0, cos (a) * 5b], be that A rotates 6 degree: B=[sin (a+6 °) * 5b around y-axis for simulate the 3D engine camera direction parameter of the right eye direction of visual lines of people be 3D engine camera position parameter B for simulating left eye position, 0, cos (a+6 °) * 5b], wherein, b is object maximum gauge, a is predetermined angle.
It is the method flow diagram of 3D View Drawing system first embodiment of a kind of three-dimensional data provided by the invention see Fig. 3, Fig. 3.The method of the present embodiment performs primarily of intelligent terminal.Wherein, the hardware unit of described intelligent terminal includes but not limited to: people's computer, notebook computer, mobile phone, panel computer etc.This intelligent terminal can be bore hole 3D display screen for the display screen with post mirror or grating, and also can be regular display screen, the system of this embodiment comprises resolution unit 301 and the first View Drawing unit 302.
Resolution unit 301, for the three-dimensional data of form becoming to mate with 3D engine by the three-dimensional data got document analysis, and sends described 3D engine to.
Wherein, three-dimensional data file is that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Such as, in Anroid platform, at least one stl formatted file and/or at least one obj formatted file are resolved to the three-dimensional data of mating with opengl es engine, and send opengl es engine to.Concrete, read at least one stl formatted file and/or at least one obj formatted file, three-dimensional coordinate data wherein, texture coordinate data (also can not having), vertex scheme vector digital independent are reassembled into the receivable data mode of opengl es engine interface (a kind of array form) to internal memory.Because the Method of Data Organization of different-format is different, so when reading, can according to the organizational form of each form, find the data that display needs, read into opengl es engine, be convenient to be applied in the achievements exhibition of 3D design or the preview in early stage of 3D printing, and can, be shown anywhere or anytime by Android platform without geographical constraintsly.Concrete analytic method can realize for those skilled in the art, does not repeat them here.
First View Drawing unit 302, for calling the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.3D left-eye view is the view of the 3D object that simulation people left eye is seen, 3D right-eye view is the view of the 3D object that simulation people right eye is seen.
Wherein, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view, be specially 3D left-eye view and the 3D right-eye view of drawing three-dimensional data on the display module preset, display module is a video window on screen.
Preferably, as shown in Figure 4, as a kind of preferred version, if the screen of intelligent terminal is bore hole 3D display screen, then system also comprises viewing area acquiring unit 320, for obtaining 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area, concrete, 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area can be obtained according to the arrangement position of bore hole 3D display screen upper prop mirror or grating.Wherein, in 3D left eye figure viewing area, display image reflects to left eye region by bore hole 3D display screen upper prop mirror or grating, and in 3D right eye figure viewing area, bore hole 3D shows upper prop mirror or display image reflects to right eye region by grating screen.Wherein, left eye region is the desirable viewing areas of user's left eye when using bore hole 3D display screen, and right eye region is the desirable viewing areas of user's left eye when using bore hole 3D display screen.
Now the first View Drawing unit 302 is specifically for when the 3D left-eye view of drawing three-dimensional data and 3D right-eye view, the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting can be judged, if, then in the corresponding region of pixel region drafting 3 D right-eye view, if not, then in the corresponding region of pixel region drafting 3 D left-eye view.
In the corresponding region of this pixel region drafting 3 D left-eye view, be specially: the 3D engine camera position parameter for the left eye position for simulating people of presetting and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, in the corresponding region of this pixel region drafting 3 D left-eye view.
In the corresponding region of this pixel region drafting 3 D right-eye view, be specially: the 3D engine camera position parameter for the right eye position for simulating people of presetting and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, in the corresponding region of this pixel region drafting 3 D right-eye view.
Also the drawing for order of 3D engine can directly be called, the view picture 3D left-eye view of drawing three-dimensional data and view picture 3D right-eye view, the screen that the method is also applicable to intelligent terminal is common display screen, after then drawing view picture 3D left-eye view and view picture 3D right-eye view, the algorithms most in use of 3D technology can be passed through again by view picture 3D left-eye view and the proper 3D view of view picture 3D right-eye view overlap-add procedure, the stereoeffect of this 3D view can be seen by wearing 3D glasses, be more than prior art, do not repeat them here.
Concrete, the 3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D right-eye view of drawing three-dimensional data; 3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data.3D right-eye view and the drafting 3 D right-eye view of drawing three-dimensional data do not limit sequencing.
Wherein, 3D engine can be but the opengl es engine be not limited in Anroid platform, before 3D engine is drawn, 3D engine interface can be utilized, data are transmitted to 3D engine, following data as in opengl es engine: three-dimensional coordinate data, vertex scheme vector data, texture coordinate data, the locus of lighting source, the displacement of object all directions, the angle that object rotates relative to original coordinates, the locus of camera, camera towards, the spatial dimension of display, the projection pattern of display, zoom factor, texture picture etc., after these data of 3D engine accepts, can automatically on the display module preset, draw the subject image of needs.In opengl es engine, 3D engine camera position parameter for the right eye position or left eye position of simulating people be camera locus and for the 3D engine camera direction parameter of the right eye sight line of simulating people or left eye direction of visual lines be camera towards, when 3D left-eye view and the 3D right-eye view of drawing three-dimensional data, in opengl es engine, other parameters are all identical, only the locus of camera and camera towards different, the 3D left-eye view drawn out and 3D right-eye view differ a parallax.
It is the method flow diagram of 3D View Drawing system second embodiment of a kind of three-dimensional data provided by the invention see Fig. 6, Fig. 6.The method of the present embodiment performs primarily of intelligent terminal.Wherein, the hardware unit of described intelligent terminal includes but not limited to: PC, notebook computer, mobile phone, panel computer etc.This intelligent terminal can be bore hole 3D display screen for the display screen with post mirror or grating, also can be regular display screen, compared to 3D View Drawing system first embodiment of a kind of three-dimensional data, design that can be mutual is added in this embodiment, be convenient to user's gesture operation different angles and observe object, rotation that can be real-time, translation, object observed by convergent-divergent.The system of this embodiment comprises resolution unit 401, the second View Drawing unit 402:
Resolution unit 401, for the three-dimensional data of form becoming to mate with 3D engine by the three-dimensional data got document analysis, and sends described 3D engine to.
Wherein, three-dimensional data file is that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
Such as, in Anroid platform, at least one stl formatted file and/or at least one obj formatted file are resolved to the three-dimensional data of mating with opengl es engine, and send opengl es engine to.Concrete, read at least one stl formatted file and/or at least one obj formatted file, three-dimensional coordinate data wherein, texture coordinate data (also can not having), vertex scheme vector digital independent are reassembled into the receivable data mode of opengl es engine interface (a kind of array form) to internal memory.Because the Method of Data Organization of different-format is different, so when reading, can according to the organizational form of each form, find the data that display needs, read into opengl es engine, be convenient to be applied in the achievements exhibition of 3D design or the preview in early stage of 3D printing, and can, be shown anywhere or anytime by Android platform without geographical constraintsly.Concrete analytic method can realize for those skilled in the art, does not repeat them here.
Second View Drawing unit 402, for calling the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.3D left-eye view is the view of the 3D object that simulation people left eye is seen, 3D right-eye view is the view of the 3D object that simulation people right eye is seen.
Wherein, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view, be specially 3D left-eye view and the 3D right-eye view of drawing three-dimensional data on the display module preset, display module is a video window on screen.
Preferably, the second View Drawing unit 402 comprises parameter update module 421 and upgrades drafting module 422.
Parameter update module 421, for being got the operational order feature of user's input by touch screen, is processed operational order feature according to Predistribution Algorithm, upgrades the corresponding drawing for order parameter of 3D engine.
Concrete, according to Predistribution Algorithm, operational order feature is processed, upgrades the corresponding drawing for order parameter of 3D engine, comprising:
If by the rotation process instruction vector that touch screen Real-time Obtaining inputs to user, then process described rotation process instruction features vector according to preset Rotation Algorithm, upgrade camera position parameter and the camera line of sight parameters of described 3D engine;
Such as, in opengl es engine in Anroid platform, if the one hand inputted to user by touch screen Real-time Obtaining refers to sliding vector, preset and rotate (can certainly be set to rotate around other axles) around z-axis, one hand refers to that the pixel quantity of the x-axis component of sliding vector is multiplied by unit picture element angle and obtains the x-axis anglec of rotation, one hand refers to that the pixel quantity of the y-axis component of sliding vector is multiplied by unit picture element angle as the y-axis anglec of rotation, upgrade the angle that object rotates relative to original coordinates, be equivalent to the camera position parameter and the camera line of sight parameters that have updated 3D engine.
If by the translation instruction vector that touch screen Real-time Obtaining inputs to user, then process translation instruction vector according to preset translation algorithm, upgrade camera position parameter and the convergent-divergent reference point of 3D engine;
Such as, in opengl es engine in Anroid platform, if after choosing the translation instrument in screen, the one hand inputted to user by touch screen Real-time Obtaining refers to sliding vector, default z-axis maintains static, one hand refers to that the pixel quantity of the x-axis component of sliding vector is multiplied by unit picture element length and obtains x-axis translation distance, one hand refers to that the pixel quantity of the y-axis component of sliding vector is multiplied by unit picture element length as y-axis translation distance, by the locus of camera to the translation of singlehanded sliding vector reverse direction, respectively along x-axis translation x-axis translation distance with along y-axis translation y-axis translation distance, convergent-divergent reference point is due in the past on the 3D object, also respectively to reverse direction along x-axis translation x-axis translation distance with along y-axis translation y-axis translation distance, finally obtain the locus of camera and the convergent-divergent reference point of 3D data that upgrade 3D engine.
If by the zoom operations instruction distance that touch screen Real-time Obtaining inputs to user, then process described zoom operations instruction distance according to preset convergent-divergent algorithm, upgrade the zoom factor of 3D engine.
Such as, in opengl es engine in Anroid platform, if to be referred to the distance in sliding process to the both hands that user inputs by touch screen Real-time Obtaining, 3D engine using current two distances referred to last time two span from ratio be multiplied by the zoom factor drawn of last time as scaling, have updated the zoom factor of 3D engine.
Upgrade the drawing for order of drafting module 422 for the drawing for order parameter call 3D engine for obtained 3D engine, the 3D left-eye view of drawing three-dimensional data and 3D right-eye view.
Concrete, for in the drawing for order parameter of the 3D engine after upgrading for simulate the right eye position of people 3D engine camera position parameter and for the 3D engine camera direction parameter of the right eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D right-eye view of drawing three-dimensional data.
For in the drawing for order parameter of the 3D engine after upgrading for simulate the left eye position of people 3D engine camera position parameter and for the 3D engine camera direction parameter of the left eye direction of visual lines of simulating people to call the drawing for order of 3D engine, the 3D left-eye view of drawing three-dimensional data.
Wherein, 3D engine can be but the opengl es engine be not limited in Anroid platform, before 3D engine is drawn, 3D engine interface can be utilized, pass to some data of 3D engine, following data as in opengl es engine: three-dimensional coordinate data, vertex scheme vector data, texture coordinate data, the locus of lighting source, the displacement of object all directions, the angle that object rotates relative to original coordinates, the locus of camera, camera towards, the spatial dimension of display, the projection pattern of display, zoom factor, texture picture etc., after these data of 3D engine accepts, can automatically on the display module preset, draw the subject image that I needs.In opengl es engine, 3D engine camera position parameter for the right eye position or left eye position of simulating people be camera locus and for the 3D engine camera direction parameter of the right eye sight line of simulating people or left eye direction of visual lines be camera towards, when 3D left-eye view and the 3D right-eye view of drawing three-dimensional data, in opengl es engine, other parameters are all identical, only the locus of camera and camera towards different, the 3D left-eye view drawn out and 3D right-eye view differ a parallax.
In the present embodiment, for simulating the 3D engine camera position parameter of left eye position and being 5 to 6 times of object maximum gauge for the distance of the object default center of the 3D engine camera position parameter and three-dimensional data of simulating right eye position, the direction of the object default center pointing to three-dimensional data from camera position is for simulating the left eye direction of visual lines of people and the right eye direction of visual lines for simulating people, and for the left eye direction of visual lines of simulating people and right eye direction of visual lines difference 2 to 8 degree for simulating people, preferably difference about 6 degree.
Such as, the object default center of three-dimensional data is true origin, distance for the object default center of the 3D engine camera position parameter and three-dimensional data of simulating right eye position is 5 times of object maximum gauge, for simulating the 3D engine camera position parameter A of right eye position be then: A=[sin (a) * 5b, 0, cos (a) * 5b], be that A rotates 6 degree: B=[sin (a+6 °) * 5b around y-axis for simulate the 3D engine camera direction parameter of the right eye direction of visual lines of people be 3D engine camera position parameter B for simulating left eye position, 0, cos (a+6 °) * 5b], wherein, b is object maximum gauge, a is predetermined angle.
In sum, the 3D View Drawing method of a kind of three-dimensional data of the present invention and drawing system, by at intelligent terminal in conjunction with 3D engine, the 3D view for being combined into object stereopsis true to nature can be obtained, the combination making user pass through 3D left-eye view and the 3D right-eye view of drawing can see the details in complex three-dimensional object intuitively, can realize in the terminal, do not limit by geographical conditions, can mutual design be convenient to that the real-time 3D view drawn three-dimensional data of user's gesture operation rotates, translation, the operation such as convergent-divergent, Consumer's Experience is better.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (12)
1. a 3D View Drawing method for three-dimensional data, is characterized in that, comprising:
By the three-dimensional data of the form that the three-dimensional data document analysis got becomes to mate with 3D engine, and send described 3D engine to;
Call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
2. the method for claim 1, is characterized in that, described three-dimensional data file is the three-dimensional data file that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
3. the method for claim 1, is characterized in that, described in call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data, comprising:
3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D right-eye view of described three-dimensional data;
3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D left-eye view of described three-dimensional data.
4. method as claimed in claim 3, it is characterized in that, described left eye direction of visual lines for simulating people and the described right eye direction of visual lines for simulating people are the direction of the object default center pointing to three-dimensional data from described camera position, and described left eye direction of visual lines for simulating people and described right eye direction of visual lines difference 2 to 10 degree for simulating people.
5. the method as described in claim 1 or 3, is characterized in that, described in call the drawing for order of described 3D engine before, also comprise:
Obtain the 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area;
The 3D left-eye view of the described three-dimensional data of described drafting and 3D right-eye view, comprising:
Judge the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting, if so, then draw the corresponding region of described 3D right-eye view at described pixel region, if not, then the corresponding region of described 3D left-eye view is drawn at described pixel region.
6. the method for claim 1, is characterized in that, described in call the drawing for order of described 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data, comprising:
Got the operational order feature of user's input by touch screen, according to Predistribution Algorithm, described operational order feature is processed, upgrade the drawing for order parameter of described 3D engine;
For obtained 3D engine drawing for order parameter call described in the drawing for order of 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
7. method as claimed in claim 6, is characterized in that, the described operational order feature being got user's input by touch screen, is processed described operational order feature according to Predistribution Algorithm, upgrade the corresponding drawing for order parameter of described 3D engine, comprising:
If by the rotation process instruction vector that touch screen Real-time Obtaining inputs to user, then process described rotation process instruction features vector according to preset Rotation Algorithm, upgrade camera position parameter and the camera line of sight parameters of described 3D engine;
If by the translation instruction vector that touch screen Real-time Obtaining inputs to user, then process described translation instruction vector according to preset translation algorithm, upgrade camera position parameter and the convergent-divergent reference point of described 3D engine;
If by the zoom operations instruction distance that touch screen Real-time Obtaining inputs to user, then process described zoom operations instruction distance according to preset convergent-divergent algorithm, upgrade the zoom factor of described 3D engine.
8. a 3D View Drawing system for the three-dimensional data of mobile terminal, is characterized in that, comprising:
Resolution unit, for the three-dimensional data of form becoming to mate with 3D engine by the three-dimensional data got document analysis, and sends described 3D engine to;
View Drawing unit, for calling the drawing for order of described 3D engine, draws 3D left-eye view and the 3D right-eye view of described three-dimensional data.
9. system as claimed in claim 8, is characterized in that, described three-dimensional data file is the three-dimensional data file that the three-dimensional data file of being derived by 3D design software or 3D scanner scanning are obtained.
10. system as claimed in claim 8, is characterized in that, described View Drawing unit, specifically for:
3D engine camera position parameter for the right eye position of presetting for simulating people and the 3D engine camera direction parameter for the right eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D right-eye view of described three-dimensional data; 3D engine camera position parameter for the left eye position of presetting for simulating people and the 3D engine camera direction parameter for the left eye direction of visual lines of simulating people, to call the drawing for order of described 3D engine, draw the 3D left-eye view of described three-dimensional data.
11. systems as described in claim 8 or 10, is characterized in that, also comprise viewing area acquiring unit, for obtaining 3D left eye figure viewing area on bore hole 3D display screen and 3D right eye figure viewing area;
Described View Drawing unit, specifically for: the drawing for order calling described 3D engine, judge the whether corresponding described 3D right eye figure viewing area of the pixel region of current drafting, if, the corresponding region of described 3D right-eye view is then drawn at described pixel region, if not, then the corresponding region of described 3D left-eye view is drawn at described pixel region.
12. systems as claimed in claim 8, it is characterized in that, described View Drawing unit comprises:
Parameter update module, for being got the operational order feature of user's input by touch screen, is processed described operational order feature according to Predistribution Algorithm, upgrades the drawing for order parameter of described 3D engine;
Upgrade drafting module, for the drawing for order of 3D engine described in the drawing for order parameter call for obtained 3D engine, draw 3D left-eye view and the 3D right-eye view of described three-dimensional data.
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