CN109978990A - Automatic light-supplementing method for position-finding and system in the room SketchUp - Google Patents
Automatic light-supplementing method for position-finding and system in the room SketchUp Download PDFInfo
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- CN109978990A CN109978990A CN201910146329.1A CN201910146329A CN109978990A CN 109978990 A CN109978990 A CN 109978990A CN 201910146329 A CN201910146329 A CN 201910146329A CN 109978990 A CN109978990 A CN 109978990A
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- wall
- sketchup
- light filling
- viewpoint
- pel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/10—Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses automatic light-supplementing method for position-finding and systems in a kind of room SketchUp, and element-free attribute is imported from SketchUp software, define wall pel；It obtains viewpoint and generates multiple rays, form multiple viewpoint line segments according to multiple rays；On the viewpoint line segment, light filling point is determined；Described step S1, S2 and S3 are run in automatized script.The invention has the advantages that: a key automatic light-supplementings, without addition manually；The intensity of automatic light-supplementing can be arranged, and meet different scenes needs；The efficiency of rendering cloth light source is improved, provides convenience for test.
Description
Technical field
The present invention relates to three-dimensional buildings to model field, it particularly relates to which automatic light-supplementing seeks position in a kind of room SketchUp
Method and system.
Background technique
SketchUp is a set of towards architect, urbanist, producer, game developer and relevant speciality people
The 3D modeling program of member, there are many renderers to have supported SketchUp software, most of rendering for supporting SketchUp at present
Device needs to find position manually and adds.
Most of renderers can not be rendered directly if not adding indoor light source, and the method for manually identifying light source position
Inefficiency, and it is easy addition unevenly, cause part excessively dark or overexposure.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes that automatic light-supplementing seeks position side in a kind of room SketchUp
Method and system, can a key automatic light-supplementing, without manually addition；The intensity of automatic light-supplementing can be arranged, and meet different scenes need
It wants；The efficiency of rendering cloth light source is improved, provides convenience for test.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
Automatic light-supplementing method for position-finding in a kind of room SketchUp,
S1 imports element-free attribute from SketchUp software, defines wall pel；
S2 obtains viewpoint and generates multiple rays, forms multiple viewpoint line segments according to multiple rays；
S3 determines light filling point on the viewpoint line segment；
Step S1, S2 and S3 described in S4 are run in automatized script.
Further, light filling lamps and lanterns are loaded in the light filling point of the step S3.
Further, defining wall pel in the step S1 includes:
S11 assigns element property with the SketchUp group or component that the interface that API is provided is each wall pel；
S12 traverses all wall pels；
S13 screens wall assemblies according to the wall pel after traversal.
Further, multiple rays include front ray, side ray and back side ray in the step S2.
Further, forming multiple viewpoint line segments according to multiple rays in the step S2 includes:
Ray described in S21 and the wall primitive generating wall intersection point；
S22 judges the wall intersection point recently；
The wall intersection point and viewpoint connect into line segment to S23 recently.
Further, in the step S3 on the viewpoint line segment, determine that light filling point includes:
S31 calculates light filling point quantity according to the viewpoint line segment length；
S32 determines the light filling point horizontal position and vertical height.
Another aspect of the present invention provides automatic light-supplementing position-finding system in a kind of room SketchUp, including,
Wall pel definition module defines wall pel for importing element-free attribute from SketchUp software；
Ray generation module generates multiple rays for obtaining viewpoint, forms multiple viewpoint line segments according to multiple rays；
Light filling point determining module, for determining light filling point in the viewpoint line segment；
Script running module is used for wall pel definition module, ray generation module and light filling point determining module certainly
It is run in dynamicization script.
Further, which further includes loading module, for adding in the light filling point of the light filling point determining module
Carry light filling lamps and lanterns.
Further, the wall pel definition module includes:
Element property assigns module, and the interface for providing with API is that the SketchUp group of each wall pel or component are assigned
Give element property；
Spider module, for traversing all wall pels；
Wall assemblies screening module, for screening wall assemblies according to the wall pel after traversal.
Further, the light filling point determining module includes:
Computing module, for calculating light filling point quantity according to the viewpoint line segment length；
Determining module, for determining the light filling point horizontal position and vertical height.
Beneficial effects of the present invention: a key automatic light-supplementing, without addition manually；The intensity of automatic light-supplementing can be arranged, full
Sufficient different scenes need；The efficiency of rendering cloth light source is improved, provides convenience for test.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart of automatic light-supplementing method for position-finding in the room SketchUp described according to embodiments of the present invention；
Fig. 2 is the effect picture of automatic light-supplementing method for position-finding in the room SketchUp described according to embodiments of the present invention；
Fig. 3 is the panorama sketch of automatic light-supplementing method for position-finding in the room SketchUp described according to embodiments of the present invention；
Fig. 4 is the schematic diagram of automatic light-supplementing position-finding system in the room SketchUp described according to embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
Using SketchUp API secondary exploitation technology, Ruby language scripts are write, below as there is no specified otherwise, element
Attribute refers to building and furnishing fields attribute of an element, attribute of an element include type (such as wall, cylinder, plate, door and window),
State and parameter etc.；Wall refers to the component with element property；Viewpoint refers to the three-dimensional point coordinate of camera position；Sight
Refer to the vectorial coordinate of camera front sight, all steps are that automatized script automatically processes process below, without behaviour manually
Make.
As shown in Figure 1, automatic light-supplementing method for position-finding in a kind of room SketchUp according to embodiments of the present invention,
S1 imports element-free attribute from SketchUp software, defines wall pel；
S2 obtains viewpoint and generates multiple rays, forms multiple viewpoint line segments according to multiple rays；
S3 determines light filling point on the viewpoint line segment；
Step S1, S2 and S3 described in S4 are run in automatized script.
In one particular embodiment of the present invention, light filling lamps and lanterns are loaded in the light filling point of the step S3.
Specifically, adding the light source of corresponding renderer at all light filling points, light source can be point light source, or
The area source or other light sources that person's light filling point enveloping surface is formed.
Intensity, type, tone of light source etc. are arranged according to the needs of scene, while providing the parameter of default, to meet
The needs of one key light filling.
In one particular embodiment of the present invention, defining wall pel in the step S1 includes:
S11 assigns element property with the SketchUp group or component that the interface that API is provided is each wall pel；
S12 traverses all wall pels；
S13 screens wall assemblies according to the wall pel after traversal.
Specifically, the wall pel of default does not have element property in SketchUp software, the interface provided with API
Wall pel is arranged to first in this step for SketchUp group or component the imparting element property of each wall pel
Component, component is endowed element property later, which wall pel is program can be wall according to the type classification in element property
Then body type traverses all component pels, judges whether there is wall element property, if there is wall element property, screening
Wall assemblies out, referred to as wall.
Detailed process has following several method:
Wall is defined according to any material
A kind of material is pre-defined as surface of wall material, as the foundation for judging wall, before rendering carries out, all walls
Surface all use this material；Wall pel is traversed, the face of all wall pels is obtained, then judges the material in face, if
The material in face with surface of wall material be it is same, then this face wall volume primitive or the group comprising this face or the component comprising this face are
It may determine that and be set as component if it is face wall volume primitive for wall；If it is group, component is converted to, if it is component,
It is then without any processing, element property then is assigned to this component, both becomes wall, finally forms the number being made of wall
Group, in case using in next step.
It is arranged according to figure layer and defines wall
A kind of wall figure layer is preset, it all should be in wall figure layer by all walls；Wall pel is traversed, further according to wall
The layer properties of volume primitive is screened, all wall pels in wall figure layer and be component, is all considered as wall, finally group
At the array being made of wall, in case using in next step.
Wall is defined according to long ratio of height to thickness
Above several functions require to pre-process, and when encountering the case where not pre-processing or component definition is unreasonable, do not have
When having the component according to standard-creation, range is limited according to long ratio of height to thickness and certain size, to determine whether being wall, judgement
Condition is such as: being highly greater than 10 with the ratio of thickness less than 20, and thickness is not less than 100, is highly greater than viewpoint height；Rule of judgment
It is without being limited thereto, it can be adjusted according to different conditions；Judge the wall pel met the requirements and as component, is all considered as wall
Body finally forms the array being made of wall, in case using in next step.
In one particular embodiment of the present invention, multiple rays include front ray, side ray in the step S2
With back side ray, wherein
Obtain ray in front of viewpoint
The coordinate points for obtaining viewpoint obtain the front vector of viewpoint using sight as foundation, form front by coordinate points and vector
Ray.
Obtain viewpoint side ray
The coordinate of viewpoint is obtained, with the x of sight, y-axis coordinate, z-axis coordinate is 0, forms horizontal plane sight, horizontal plane sight is with water
Plane is that Plane of rotation is rotated clockwise such as 30 degree, 60 degree, 90 degree, 270 degree, 300 degree, 330 degree of vectors as side.By sitting
Punctuate and vector form side ray.The degree of rotation is not limited to the above numerical value, can be adjusted according to different situations.
Obtain viewpoint back side ray
The coordinate points for obtaining viewpoint rotate 180 degree as vector using sight horizontal plane.The back side is formed by coordinate points and vector to penetrate
Line.
Obtain viewpoint perpendicular ray
The coordinate points of viewpoint are obtained, vertical vector is used as with [0,0,1] and [0,0, -1], is made of vertically coordinate points and vector
Ray.
Above all of ray composition one-dimension array in case use in next step.
In one particular embodiment of the present invention, multiple viewpoint lines are formed according to multiple rays in the step S2
Section include:
Ray described in S21 and the wall pel generate wall intersection point；
The a plurality of ray obtained by step S2 intersects with the face of all wall pels respectively for each ray, generates more
A intersection point, these intersection points form array, and combine to form Hash table with ray array, in case using in next step.
S22 judges the wall intersection point recently；
The Hash table formed by S21, for each ray, respectively by all wall intersection points and eye coordinates of S21 acquisition
Point, obtain line distance, and select corresponding each ray the shortest distance point as nearest wall intersection point.
The wall intersection point and viewpoint connect into line segment to S23 recently.
All nearest wall intersection points obtained by S22, connect into line segment with eye coordinates point respectively, as viewpoint line segment,
Form array.
In one particular embodiment of the present invention, light filling point is determined on the viewpoint line segment in the step S3
Include:
S31 calculates light filling point quantity according to the viewpoint line segment length；
Specifically, determining light filling point standoff distance, such as 1000mm on same ray according to the requirement of ambient brightness, use
Viewpoint line segment length obtains light filling point quantity n divided by standoff distance, if the decimal of n is less than 0.5, n=n -1.
S32 determines the light filling point horizontal position and vertical height.
Specifically, be directed to every viewpoint line segment, according to standoff distance, the direction of viewpoint forms motion-vector, light filling point with
This as motion-vector, first light filling point with viewpoint as basic point, second o'clock with first point as basic point, with such
It pushes away, determines the horizontal position of all light filling points.
By the vertical vector of above-mentioned acquisition, use [0,0, -1] vector, obtain viewpoint terrain clearance, use [0,0,1] to
Amount obtains height of the viewpoint from ceiling, according to scene it needs to be determined that the vertical height of light filling point, if viewpoint is away from heights of ceilings
2/3 at.
When specifically used, as shown in Figures 2 and 3, from Aladdin design tool, click rendering function and adjust brightness, point
It hits after determining, the script of routine call SketchUp secondary development, script can add light for indoor scene automatically to illuminate
Scene renders effect picture or panorama sketch, such as Fig. 3.
As shown in figure 4, another aspect of the present invention, automatic light-supplementing position-finding system in a kind of room SketchUp is provided, including,
Wall pel definition module defines wall pel for importing element-free attribute from SketchUp software；
Ray generation module generates multiple rays for obtaining viewpoint, forms multiple viewpoint line segments according to multiple rays；Its
In, multiple rays include front ray, side ray and back side ray,
Obtain ray in front of viewpoint
The coordinate points for obtaining viewpoint obtain the front vector of viewpoint using sight as foundation, form front by coordinate points and vector
Ray.
Obtain viewpoint side ray
The coordinate of viewpoint is obtained, with the x of sight, y-axis coordinate, z-axis coordinate is 0, forms horizontal plane sight, horizontal plane sight is with water
Plane is that Plane of rotation is rotated clockwise such as 30 degree, 60 degree, 90 degree, 270 degree, 300 degree, 330 degree of vectors as side.By sitting
Punctuate and vector form side ray.The degree of rotation is not limited to the above numerical value, can be adjusted according to different situations.
Obtain viewpoint back side ray
The coordinate points for obtaining viewpoint rotate 180 degree as vector using sight horizontal plane.The back side is formed by coordinate points and vector to penetrate
Line.
Obtain viewpoint perpendicular ray
The coordinate points of viewpoint are obtained, vertical vector is used as with [0,0,1] and [0,0, -1], is made of vertically coordinate points and vector
Ray.
Forming multiple viewpoint line segments according to multiple rays includes:
Wall intersection point generation module generates wall intersection point for the ray and the wall pel；
For each ray, intersect respectively with the face of all wall pels, generate multiple intersection points, these intersection points form number
Group, and combine to form Hash table with ray array, in case using in next step.
Judgment module, for judging the nearest wall intersection point；
For each ray, respectively by all wall intersection points and eye coordinates point that obtain, line distance is obtained, and select
The point of the shortest distance of each ray is corresponded to out as nearest wall intersection point.
Connecting line segment module connects into line segment for the nearest wall intersection point and viewpoint.
By all nearest wall intersection points obtained, line segment is connected into eye coordinates point respectively, as viewpoint line segment, is formed
Array.
Light filling point determining module, for determining light filling point in the viewpoint line segment；
Script running module is used for wall pel definition module, ray generation module and light filling point determining module certainly
It is run in dynamicization script.
In one particular embodiment of the present invention, which further includes loading module, for true in the light filling point
The light filling point of cover half block loads light filling lamps and lanterns.
Specifically, adding the light source of corresponding renderer at all light filling points, light source can be point light source, or
The area source or other light sources that person's light filling point enveloping surface is formed.
Intensity, type, tone of light source etc. are arranged according to the needs of scene, while providing the parameter of default, to meet
The needs of one key light filling.
In one particular embodiment of the present invention, the wall pel definition module includes:
Element property assigns module, and the interface for providing with API is that the SketchUp group of each wall pel or component are assigned
Give element property；
Spider module, for traversing all wall pels；
Wall assemblies screening module, for screening wall assemblies according to the wall pel after traversal.
In one particular embodiment of the present invention, the light filling point determining module includes:
Computing module, for calculating light filling point quantity according to the viewpoint line segment length；
Determining module, for determining the light filling point horizontal position and vertical height.
In conclusion by means of above-mentioned technical proposal of the invention, a key automatic light-supplementing, without addition manually；It is automatic to mend
The intensity of light can be arranged, and meet different scenes needs；The efficiency of rendering cloth light source is improved, provides convenience for test；To all
The interior space be applicable in.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. automatic light-supplementing method for position-finding in a kind of room SketchUp, which is characterized in that
S1 imports element-free attribute from SketchUp software, defines wall pel；
S2 obtains viewpoint and generates multiple rays, forms multiple viewpoint line segments according to multiple rays；
S3 determines light filling point on the viewpoint line segment；
Step S1, S2 and S3 described in S4 are run in automatized script.
2. automatic light-supplementing method for position-finding in the room SketchUp according to claim 1, which is characterized in that in the step S3
Light filling point load light filling lamps and lanterns.
3. automatic light-supplementing method for position-finding in the room SketchUp according to claim 1, which is characterized in that in the step S1
Defining wall pel includes:
S11 assigns element property with the SketchUp group or component that the interface that API is provided is each wall pel；
S12 traverses all wall pels；
S13 screens wall assemblies according to the wall pel after traversal.
4. automatic light-supplementing method for position-finding in the room SketchUp according to claim 1, which is characterized in that in the step S2
Multiple rays include front ray, side ray and back side ray.
5. automatic light-supplementing method for position-finding in the room SketchUp according to claim 1, which is characterized in that in the step S2
Forming multiple viewpoint line segments according to multiple rays includes:
Ray described in S21 and the wall primitive generating wall intersection point；
S22 judges the wall intersection point recently；
The wall intersection point and viewpoint connect into line segment to S23 recently.
6. automatic light-supplementing method for position-finding in the room SketchUp according to claim 1-5, which is characterized in that described
In step S3 on the viewpoint line segment, determine that light filling point includes:
S31 calculates light filling point quantity according to the viewpoint line segment length；
S32 determines the light filling point horizontal position and vertical height.
7. automatic light-supplementing position-finding system in a kind of room SketchUp, which is characterized in that including,
Wall pel definition module defines wall pel for importing element-free attribute from SketchUp software；
Ray generation module generates multiple rays for obtaining viewpoint, forms multiple viewpoint line segments according to multiple rays；
Light filling point determining module, for determining light filling point in the viewpoint line segment；
Script running module is used for wall pel definition module, ray generation module and light filling point determining module certainly
It is run in dynamicization script.
8. automatic light-supplementing position-finding system in the room SketchUp according to claim 7, which is characterized in that the system further includes
Loading module loads light filling lamps and lanterns for the light filling point in the light filling point determining module.
9. automatic light-supplementing position-finding system in the room SketchUp according to claim 7, which is characterized in that the wall pel
Definition module includes:
Element property assigns module, and the interface for providing with API is that the SketchUp group of each wall pel or component are assigned
Give element property；
Spider module, for traversing all wall pels；
Wall assemblies screening module, for screening wall assemblies according to the wall pel after traversal.
10. according to automatic light-supplementing position-finding system in the described in any item rooms SketchUp claim 7-9, which is characterized in that institute
Stating light filling point determining module includes:
Computing module, for calculating light filling point quantity according to the viewpoint line segment length；
Determining module, for determining the light filling point horizontal position and vertical height.
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| CN201910146329.1A CN109978990B (en) | 2019-02-27 | 2019-02-27 | SketchUp indoor automatic light supplementing and locating method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146329.1A CN109978990B (en) | 2019-02-27 | 2019-02-27 | SketchUp indoor automatic light supplementing and locating method and system |
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| CN109978990B CN109978990B (en) | 2023-09-01 |
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Cited By (1)
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| CN113332714A (en) * | 2021-06-29 | 2021-09-03 | 天津亚克互动科技有限公司 | Light supplementing method and device for game model, storage medium and computer equipment |
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