CN105045476A - Method and device for acquiring spotlight graph - Google Patents
Method and device for acquiring spotlight graph Download PDFInfo
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- CN105045476A CN105045476A CN201510325511.5A CN201510325511A CN105045476A CN 105045476 A CN105045476 A CN 105045476A CN 201510325511 A CN201510325511 A CN 201510325511A CN 105045476 A CN105045476 A CN 105045476A
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- 238000009877 rendering Methods 0.000 claims description 8
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Abstract
The embodiment of the invention discloses a method and a device for acquiring a spotlight graph, wherein a circle of a spotlight is acquired, and the center point of the circle is the position of the spotlight on a screen; acquiring a preset number of graphs, wherein the graphs are triangular or polygonal, and the vertexes of the graphs comprise the center point of the circle and at least two points on the circumference of the circle; setting a color value of a center of the circle as a first color value, and setting color values of points other than the center point of the circle on the graph as a second color value; and acquiring the graph after the color is changed according to a preset color change algorithm, wherein the change is the change of the color value from the first color value to the second color value, so that the spotlight is brightest at the center of the lamp, the brightness is gradually decreased towards the periphery, and finally a fuzzy effect is achieved in a given range, so that the line of sight of people causes a divergence effect of the spotlight.
Description
Technical field
The embodiment of the present invention relates to the technical field of mobile terminal, particularly relates to a kind of method and the device that obtain spotlight figure.
Background technology
At present, in graphics process, the effect of a lot of spotlight be all one completely transparent circular block the superiors at show layers, for having an X-rayed the object of lower floor, be only a see-through area, and indifferent spotlight effect.
Summary of the invention
The object of the embodiment of the present invention is to propose a kind of method and the device that obtain spotlight figure, is intended to the problem solving the display effect how improving spotlight.
For reaching this object, the embodiment of the present invention by the following technical solutions:
Obtain a method for spotlight figure, described method comprises:
Obtain the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
The color value at the center of described circle is set to the first color value, the color value of other points on described figure except the central point of described circle is set to the second color value;
Obtain the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
Preferably, the figure of the number that described acquisition pre-sets, described figure is triangle or polygon, and the summit of described figure comprises the central point of described circle and at least two at the point circumferentially of described circle, comprising:
Described circle is divided into N number of equal portions uniformly;
Obtain the coordinate of N+1 point after dividing, described N+1 coordinate put is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Coordinate according to described N+1 point obtains N number of triangle, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
Preferably, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to the change of described second color value, comprising:
Obtain the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
Preferably, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to after the change of described second color value, also comprise:
Receive the position coordinates of user trigger point on the screen;
Judge that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
If the position coordinates of described trigger point whether in the coordinate range of the circle of described spotlight, then obtains the instruction of sliding on the screen described trigger point;
The position of the central point of described spotlight is moved according to described instruction.
Preferably, described position of moving the central point of described spotlight according to described instruction, comprising:
If described instruction is for being moved to the left, be then moved to the left the position of the central point of described spotlight;
If described instruction is for moving right, then the position of the central point of the described spotlight that moves right;
If described instruction is for moving up, then the position of the central point of the described spotlight that moves up;
If described instruction is for moving down, then move down the position of the central point of described spotlight.
Obtain a device for spotlight figure, described device comprises:
First acquisition module, for obtaining the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Second acquisition module, for obtaining the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
Arrange module, the color value for the center by described circle is set to the first color value, and the color value of other points on described figure except the central point of described circle is set to the second color value;
3rd acquisition module, for obtaining the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
Preferably, described second acquisition module comprises:
Division unit, for being divided into N number of equal portions uniformly by described circle;
First acquiring unit, for obtaining the coordinate of the N+1 after division point, the coordinate of described N+1 point is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Second acquisition unit, for obtaining N number of triangle according to the coordinate of described N+1 point, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
Preferably, described 3rd acquisition module comprises:
3rd acquiring unit, for obtaining the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
Preferably, described device also comprises:
Receiver module, for receiving the position coordinates of user trigger point on the screen;
Judge module, for judging that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
Acquisition module, if for the position coordinates of described trigger point whether in the coordinate range of the circle of described spotlight, then obtain the instruction of sliding on the screen described trigger point;
Mobile module moves the position of the central point of described spotlight according to described instruction.
Preferably, described mobile module comprises:
First mobile unit, if for described instruction for being moved to the left, is then moved to the left the position of the central point of described spotlight;
Second mobile unit, if for described instruction for moving right, then the position of the central point of the described spotlight that moves right;
3rd mobile unit, if for described instruction for moving up, then the position of the central point of the described spotlight that moves up;
4th mobile unit, if for described instruction for moving down, then moves down the position of the central point of described spotlight.
The present invention realizes the circle by obtaining spotlight, and the central point of described circle is the position of described spotlight on screen; Obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle; The color value at the center of described circle is set to the first color value, the color value of other points on described figure except the central point of described circle is set to the second color value; The described figure after color change is obtained according to the color change algorithm pre-set, describedly be changed to color value from described first color value to the change of described second color value, thus to realize spotlight at lamp center be the brightest, brightness is slowly successively decreased to surrounding again, finally in given scope, reach blur effect, cause the dissipating effect of spotlight to the sight line of people.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the embodiment of the present invention obtains method first embodiment of spotlight figure;
Fig. 2 is the schematic flow sheet that the embodiment of the present invention obtains method second embodiment of spotlight;
Fig. 3 is the high-level schematic functional block diagram that the embodiment of the present invention obtains the device of spotlight figure;
Fig. 4 is the high-level schematic functional block diagram of the embodiment of the present invention second acquisition module 302;
Fig. 5 is the high-level schematic functional block diagram of the embodiment of the present invention the 3rd acquisition module 304;
Fig. 6 is the high-level schematic functional block diagram that the embodiment of the present invention obtains the device of spotlight figure;
Fig. 7 is the high-level schematic functional block diagram of embodiment of the present invention mobile module 308.
Embodiment
Below in conjunction with drawings and Examples, the embodiment of the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the embodiment of the present invention, but not the restriction to the embodiment of the present invention.It also should be noted that, for convenience of description, illustrate only the part relevant to the embodiment of the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
It is the schematic flow sheet of method first embodiment of embodiment of the present invention acquisition spotlight figure with reference to figure 1, Fig. 1.
In embodiment one, the method for described acquisition spotlight figure comprises:
Step 101, obtain the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Concrete, on screen, a newly-built layer, is set to black by the color of this layer.The position coordinates P (x, y) of given spotlight on screen, and the radius R of spotlight, and the color of P point in this layer is set to black transparent.
Step 102, obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
Preferably, the figure of the number that described acquisition pre-sets, described figure is triangle or polygon, and the summit of described figure comprises the central point of described circle and at least two at the point circumferentially of described circle, comprising:
Described circle is divided into N number of equal portions uniformly;
Obtain the coordinate of N+1 point after dividing, described N+1 coordinate put is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Coordinate according to described N+1 point obtains N number of triangle, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
Concrete, the circle of spotlight is divided into N part, then every a angle is a=2* π/N, calculates this divide N and go the coordinate of N number of fixed point in region as follows by the coordinate of radius and spotlight:
The coordinate of i-th point is: x=R*cos (i*a); Y=R*sin (i*a); I is from 0 to N, and the color value arranging the point is black non transparent.
Step 103, is set to the first color value by the color value at the center of described circle, and the color value of other points on described figure except the central point of described circle is set to the second color value;
Step 104, obtains the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
Preferably, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to the change of described second color value, comprising:
Obtain the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
Concrete, from N number of fixed point, take out two adjacent fixed points in order as (0,1) (1,2), (N-1, N+1), forms a triangle with the coordinate points p of spotlight respectively, and play up mode with the triangle of OpenGL and play up capable for these triangles, known above the color value on each summit, OpenGL can remove rendering triangles according to color value variation tendency, and such as a point is red, b point white, a to b will by the white trend of red stain.
The present invention realizes the circle by obtaining spotlight, and the central point of described circle is the position of described spotlight on screen; Obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle; The color value at the center of described circle is set to the first color value, the color value of other points on described figure except the central point of described circle is set to the second color value; The described figure after color change is obtained according to the color change algorithm pre-set, describedly be changed to color value from described first color value to the change of described second color value, thus to realize spotlight at lamp center be the brightest, brightness is slowly successively decreased to surrounding again, finally in given scope, reach blur effect, cause the dissipating effect of spotlight to the sight line of people.
Embodiment two
It is the schematic flow sheet of method second embodiment of embodiment of the present invention acquisition spotlight with reference to figure 2, Fig. 2.
In embodiment two, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to after the change of described second color value, also comprise:
Step 105, receives the position coordinates of user trigger point on the screen;
Step 106, judges that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
Step 107, if the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight, then obtains the instruction of sliding on the screen described trigger point;
Step 108, moves the position of the central point of described spotlight according to described instruction.
Preferably, described position of moving the central point of described spotlight according to described instruction, comprising:
If described instruction is for being moved to the left, be then moved to the left the position of the central point of described spotlight;
If described instruction is for moving right, then the position of the central point of the described spotlight that moves right;
If described instruction is for moving up, then the position of the central point of the described spotlight that moves up;
If described instruction is for moving down, then move down the position of the central point of described spotlight.
Concrete, by detecting the touch screen position of user within the scope of screen spotlight, if this touch screen position is in the circle of described spotlight, the direction that user slides on the touchscreen can be detected further, always moves described spotlight according to the party.
Embodiment three
It is the high-level schematic functional block diagram of the device of embodiment of the present invention acquisition spotlight figure with reference to figure 3, Fig. 3.
In embodiment three, the device of described acquisition spotlight figure comprises:
First acquisition module 301, for obtaining the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Concrete, on screen, a newly-built layer, is set to black by the color of this layer.The position coordinates P (x, y) of given spotlight on screen, and the radius R of spotlight, and the color of P point in this layer is set to black transparent.
Second acquisition module 302, for obtaining the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
Preferably, with reference to figure 4, Fig. 4 be the high-level schematic functional block diagram of the embodiment of the present invention second acquisition module 302.
Described second acquisition module 302 comprises:
Division unit 401, for being divided into N number of equal portions uniformly by described circle;
First acquiring unit 402, for obtaining the coordinate of the N+1 after division point, the coordinate of described N+1 point is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Second acquisition unit 403, for obtaining N number of triangle according to the coordinate of described N+1 point, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
Concrete, the circle of spotlight is divided into N part, then every a angle is a=2* π/N, calculates this divide N and go the coordinate of N number of fixed point in region as follows by the coordinate of radius and spotlight:
The coordinate of i-th point is: x=R*cos (i*a); Y=R*sin (i*a); I is from 0 to N, and the color value arranging the point is black non transparent.
Arrange module 303, the color value for the center by described circle is set to the first color value, and the color value of other points on described figure except the central point of described circle is set to the second color value;
3rd acquisition module 304, for obtaining the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
Preferably, Fig. 5 is the high-level schematic functional block diagram of the embodiment of the present invention the 3rd acquisition module 304.
Described 3rd acquisition module 304 comprises:
3rd acquiring unit 500, for obtaining the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
Concrete, from N number of fixed point, take out two adjacent fixed points in order as (0,1) (1,2), (N-1, N+1), forms a triangle with the coordinate points p of spotlight respectively, and play up mode with the triangle of OpenGL and play up capable for these triangles, known above the color value on each summit, OpenGL can remove rendering triangles according to color value variation tendency, and such as a point is red, b point white, a to b will by the white trend of red stain.
The present invention realizes the circle by obtaining spotlight, and the central point of described circle is the position of described spotlight on screen; Obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle; The color value at the center of described circle is set to the first color value, the color value of other points on described figure except the central point of described circle is set to the second color value; The described figure after color change is obtained according to the color change algorithm pre-set, describedly be changed to color value from described first color value to the change of described second color value, thus to realize spotlight at lamp center be the brightest, brightness is slowly successively decreased to surrounding again, finally in given scope, reach blur effect, cause the dissipating effect of spotlight to the sight line of people.
Embodiment four
It is the high-level schematic functional block diagram of the device of embodiment of the present invention acquisition spotlight figure with reference to figure 6, Fig. 6.
On the basis of embodiment three, described device also comprises:
Receiver module 305, for receiving the position coordinates of user trigger point on the screen;
Judge module 306, for judging that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
3rd acquisition module 307, if for the position coordinates of described trigger point whether in the coordinate range of the circle of described spotlight, then obtain the instruction of sliding on the screen described trigger point;
Mobile module 308, for moving the position of the central point of described spotlight according to described instruction.
Preferably, with reference to figure 7, Fig. 7 be the high-level schematic functional block diagram of embodiment of the present invention mobile module 308.Described mobile module 308 comprises:
First mobile unit 701, if for described instruction for being moved to the left, is then moved to the left the position of the central point of described spotlight;
Second mobile unit 702, if for described instruction for moving right, then the position of the central point of the described spotlight that moves right;
3rd mobile unit 703, if for described instruction for moving up, then the position of the central point of the described spotlight that moves up;
4th mobile unit 704, if for described instruction for moving down, then moves down the position of the central point of described spotlight.
Concrete, by detecting the touch screen position of user within the scope of screen spotlight, if this touch screen position is in the circle of described spotlight, the direction that user slides on the touchscreen can be detected further, always moves described spotlight according to the party.
Below the know-why of the embodiment of the present invention is described in conjunction with specific embodiments.These describe the principle just in order to explain the embodiment of the present invention, and can not be interpreted as the restriction to embodiment of the present invention protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay other embodiment that performing creative labour can associate the embodiment of the present invention, these modes all by fall into the embodiment of the present invention protection domain within.
Claims (10)
1. obtain a method for spotlight figure, it is characterized in that, described method comprises:
Obtain the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Obtain the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
The color value at the center of described circle is set to the first color value, the color value of other points on described figure except the central point of described circle is set to the second color value;
Obtain the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
2. method according to claim 1, it is characterized in that, the figure of the number that described acquisition pre-sets, described figure is triangle or polygon, the summit of described figure comprises the central point of described circle and at least two at the point circumferentially of described circle, comprising:
Described circle is divided into N number of equal portions uniformly;
Obtain the coordinate of N+1 point after dividing, described N+1 coordinate put is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Coordinate according to described N+1 point obtains N number of triangle, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
3. method according to claim 1, is characterized in that, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to the change of described second color value, comprising:
Obtain the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
4. the method according to claims 1 to 3 any one, it is characterized in that, color change algorithm that described basis pre-sets obtains the described figure after color change, described in be changed to color value from described first color value to after the change of described second color value, also comprise:
Receive the position coordinates of user trigger point on the screen;
Judge that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
If the position coordinates of described trigger point whether in the coordinate range of the circle of described spotlight, then obtains the instruction of sliding on the screen described trigger point;
The position of the central point of described spotlight is moved according to described instruction.
5. method according to claim 4, is characterized in that, described position of moving the central point of described spotlight according to described instruction, comprising:
If described instruction is for being moved to the left, be then moved to the left the position of the central point of described spotlight;
If described instruction is for moving right, then the position of the central point of the described spotlight that moves right;
If described instruction is for moving up, then the position of the central point of the described spotlight that moves up;
If described instruction is for moving down, then move down the position of the central point of described spotlight.
6. obtain a device for spotlight figure, it is characterized in that, described device comprises:
First acquisition module, for obtaining the circle of spotlight, the central point of described circle is the position of described spotlight on screen;
Second acquisition module, for obtaining the figure of the number pre-set, described figure is triangle or polygon, and the summit of described figure comprises central point and at least two points circumferentially at described circle of described circle;
Arrange module, the color value for the center by described circle is set to the first color value, and the color value of other points on described figure except the central point of described circle is set to the second color value;
3rd acquisition module, for obtaining the described figure after color change according to the color change algorithm that pre-sets, described in be changed to color value from described first color value to the change of described second color value.
7. device according to claim 6, is characterized in that, described second acquisition module comprises:
Division unit, for being divided into N number of equal portions uniformly by described circle;
First acquiring unit, for obtaining the coordinate of the N+1 after division point, the coordinate of described N+1 point is the circle of N number of equal portions N+1 the coordinate put crossing with the circumference of described spotlight;
Second acquisition unit, for obtaining N number of triangle according to the coordinate of described N+1 point, described vertex of a triangle be respectively the center of described circle and described N+1 put in adjacent two points.
8. device according to claim 6, is characterized in that, described 3rd acquisition module comprises:
3rd acquiring unit, for obtaining the graduated colors of described N number of leg-of-mutton color from white to black according to the Rendering algorithms pre-set, described first color value is white, and described second color value is black.
9. the device according to claim 6 to 8 any one, is characterized in that, described device also comprises:
Receiver module, for receiving the position coordinates of user trigger point on the screen;
Judge module, for judging that the position coordinates of described trigger point is whether in the coordinate range of the circle of described spotlight;
Acquisition module, if for the position coordinates of described trigger point whether in the coordinate range of the circle of described spotlight, then obtain the instruction of sliding on the screen described trigger point;
Mobile module, for moving the position of the central point of described spotlight according to described instruction.
10. device according to claim 9, is characterized in that, described mobile module comprises:
First mobile unit, if for described instruction for being moved to the left, is then moved to the left the position of the central point of described spotlight;
Second mobile unit, if for described instruction for moving right, then the position of the central point of the described spotlight that moves right;
3rd mobile unit, if for described instruction for moving up, then the position of the central point of the described spotlight that moves up;
4th mobile unit, if for described instruction for moving down, then moves down the position of the central point of described spotlight.
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