渲染的一些代码
/**
* draw will be called fps
*/
-(void) draw {
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
[_renderdrawOpenGLBackground];
glDisableClientState(GL_COLOR_ARRAY);
/**画的时候也要体现出一个层次感来~ */
[_renderdrawOneColorBackground]; //背景~
_world->DrawDebugData(); // debugDraw(因为包含更多，所以放在画冰块儿后面)~
[_renderdrawTouchPath:_mouseDowntouchSegment:_touchSegment];//切割路径~
[_renderdrawNails:_single.nailsnailsCount:_single.nailsCount];
if(![_gCfg bfk:@"debugDraw"]) {
[_renderdrawIce:_world]; //形状外框线条~
[_renderdrawLittleMap:_world];
}
// restore default GL states
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnable(GL_TEXTURE_2D);
}
// 绘制混色的背景~
-(void) drawOpenGLBackground {
b2Vec2 vertices[4];
if(_gCfg.isHd ==YES) {
vertices[0] =b2Vec2(0.0f,640.0f);
vertices[1] =b2Vec2(960.0f,640.0f);
vertices[2] =b2Vec2(0.0f,0.0f);
vertices[3] =b2Vec2(960.0f,0.0f);
} else {
vertices[0] =b2Vec2(0.0f,320.0f);
vertices[1] =b2Vec2(480.0f,320.0f);
vertices[2] =b2Vec2(0.0f,0.0f);
vertices[3] =b2Vec2(480.0f,0.0f);
}
ccColor4F colors[4];
colors[0] = (ccColor4F){1.0f,1.0f,0.0f,1.0f};
colors[1] = (ccColor4F){0.0f,1.0f,0.0f,1.0f};
colors[2] = (ccColor4F){0.0f,0.0f,1.0f,1.0f};
colors[3] = (ccColor4F){1.0f,0.0f,0.0f,1.0f};
//将顶点（x, y）数组和颜色（r, g, b, a）数组传给opengl
glVertexPointer(2, GL_FLOAT, 0, vertices);
glColorPointer(4, GL_FLOAT, 0, colors);
glDrawArrays(GL_TRIANGLE_STRIP,0,4);
}
// 绘制单色的背景~
-(void) drawOneColorBackground {
b2Vec2 vertices[4];
if(_gCfg.isHd ==YES) {
vertices[0]=b2Vec2(0.0f,640.0f);
vertices[1]=b2Vec2(960.0f,640.0f);
vertices[2]=b2Vec2(0.0f,0.0f);
vertices[3]=b2Vec2(960.0f,0.0f);
} else {
vertices[0]=b2Vec2(0.0f,320.0f);
vertices[1]=b2Vec2(480.0f,320.0f);
vertices[2]=b2Vec2(0.0f,0.0f);
vertices[3]=b2Vec2(480.0f,0.0f);
}
//将顶点（x, y）数组和颜色（r, g, b, a）数组传给opengl
glColor4f(0.3f, 0.3f, 0.3f, 1.0f); // 灰色
glVertexPointer(2, GL_FLOAT, 0, vertices);
glDrawArrays(GL_TRIANGLE_STRIP,0,4);
}
-(void) drawNails:(b2Vec2*)nails nailsCount:(int)nailsCount {
/**绘制之前将所有的 b2Vec2 单元放大 PTM_RATIO 倍~ */
b2Vec2 *handled = new b2Vec2[nailsCount];
for(int i = 0; i < nailsCount; ++ i) {
b2Vec2 item = nails[i];
handled[i].Set(item.x *_gCfg.multiplyFactor, item.y *_gCfg.multiplyFactor);
}
glPointSize(8.0f);
glColor4f(1.0f,0.0f,0.0f,1.0f);
glVertexPointer(2, GL_FLOAT, 0, handled);
glDrawArrays(GL_POINTS, 0, nailsCount);
glPointSize(1.0f);
}
-(void) drawIce:(b2World*)world {
b2Body *bodyList = world->GetBodyList();
for (b2Body* b = bodyList; b; b = b->GetNext()) {
const b2Transform& xf = b->GetTransform();
for (b2Fixture* f = b->GetFixtureList(); f; f = f->GetNext()) {
if (b->IsActive() == false) {
[selfdrawSolidPolygon:fxf:xf color:b2Color(0.5f,0.5f,0.3f)];
} else if (b->GetType() ==b2_staticBody) {
[selfdrawSolidPolygon:fxf:xf color:b2Color(0.5f,0.9f,0.5f)];
} else if (b->GetType() ==b2_kinematicBody) {
[selfdrawSolidPolygon:fxf:xf color:b2Color(0.5f,0.5f,0.9f)];
} else if (b->IsAwake() ==false) {
[selfdrawSolidPolygon:fxf:xf color:b2Color(0.6f,0.6f,0.6f)];
} else {
[selfdrawSolidPolygon:fxf:xf color:b2Color(0.9f,0.7f,0.7f)];
}
}
}
}