2010-07-06 20:55:05 +08:00
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/****************************************************************************
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Copyright (c) 2010 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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2010-07-06 11:54:00 +08:00
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#include "CCDrawingPrimitives.h"
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2010-07-06 10:19:51 +08:00
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2010-07-06 17:54:36 +08:00
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#define _USE_MATH_DEFINES
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2010-07-06 10:19:51 +08:00
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#include <math.h>
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#include <string.h>
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#include <GLES/gl.h>
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2010-07-06 20:55:05 +08:00
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void ccDrawPoint(CGPoint point)
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{
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, &point);
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glDrawArrays(GL_POINTS, 0, 1);
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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}
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void ccDrawPoints(CGPoint *points, unsigned int numberOfPoints)
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{
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, points);
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glDrawArrays(GL_POINTS, 0, numberOfPoints);
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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}
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void ccDrawLine(CGPoint origin, CGPoint destination)
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{
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CGPoint vertices[2];
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vertices[0] = origin;
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vertices[1] = destination;
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, vertices);
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glDrawArrays(GL_LINES, 0, 2);
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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}
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2010-07-08 11:58:33 +08:00
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void ccDrawPoly(CGPoint *poli, int points, bool closePolygon)
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2010-07-06 20:55:05 +08:00
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{
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, poli);
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if (closePolygon)
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{
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glDrawArrays(GL_LINE_LOOP, 0, points);
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}
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else
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{
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glDrawArrays(GL_LINE_STRIP, 0, points);
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}
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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}
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2010-07-08 11:58:33 +08:00
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void ccDrawCircle(CGPoint center, float r, float a, int segs, bool drawLineToCenter)
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2010-07-06 20:55:05 +08:00
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{
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int additionalSegment = 1;
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if (drawLineToCenter)
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{
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++additionalSegment;
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}
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const float coef = 2.0f * (float)M_PI/segs;
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2010-07-27 15:49:39 +08:00
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float *vertices = new float[2*(segs+2)]; // float *vertices = (float *)malloc( sizeof(float)*2*(segs+2));
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2010-07-06 20:55:05 +08:00
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if( ! vertices )
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{
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return;
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}
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memset( vertices,0, sizeof(float)*2*(segs+2));
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for(int i=0;i<=segs;i++)
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{
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float rads = i*coef;
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float j = r * cosf(rads + a) + center.x;
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float k = r * sinf(rads + a) + center.y;
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vertices[i*2] = j;
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vertices[i*2+1] =k;
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}
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vertices[(segs+1)*2] = center.x;
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vertices[(segs+1)*2+1] = center.y;
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, segs+additionalSegment);
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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2010-07-27 15:49:39 +08:00
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delete[] vertices; // free(vertices);
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2010-07-06 20:55:05 +08:00
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}
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void ccDrawQuadBezier(CGPoint origin, CGPoint control, CGPoint destination, int segments)
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{
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CGPoint *vertices = new CGPoint[segments + 1];
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float t = 0.0f;
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for(int i = 0; i < segments; i++)
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{
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float x = powf(1 - t, 2) * origin.x + 2.0f * (1 - t) * t * control.x + t * t * destination.x;
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float y = powf(1 - t, 2) * origin.y + 2.0f * (1 - t) * t * control.y + t * t * destination.y;
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vertices[i] = CGPointMake(x, y);
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t += 1.0f / segments;
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}
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vertices[segments] = destination;
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, segments + 1);
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delete[] vertices;
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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}
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void ccDrawCubicBezier(CGPoint origin, CGPoint control1, CGPoint control2, CGPoint destination, int segments)
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{
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CGPoint *vertices = new CGPoint[segments + 1];
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float t = 0;
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for(int i = 0; i < segments; ++i)
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{
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float x = powf(1 - t, 3) * origin.x + 3.0f * powf(1 - t, 2) * t * control1.x + 3.0f * (1 - t) * t * t * control2.x + t * t * t * destination.x;
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float y = powf(1 - t, 3) * origin.y + 3.0f * powf(1 - t, 2) * t * control1.y + 3.0f * (1 - t) * t * t * control2.y + t * t * t * destination.y;
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vertices[i] = CGPointMake(x, y);
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t += 1.0f / segments;
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}
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vertices[segments] = destination;
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// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
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// Needed states: GL_VERTEX_ARRAY,
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// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY
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glDisable(GL_TEXTURE_2D);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, segments + 1);
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delete[] vertices;
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// restore default state
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_TEXTURE_2D);
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2010-07-06 10:19:51 +08:00
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}
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