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Merge pull request #12482 from yangws/fixbug_20214 

fixbug: cpp-test -> NewRenderer （drag the layer to test the result of…
This commit is contained in:
pandamicro 2015-06-23 21:09:59 +08:00
parent 99df8c4e0e 4b768c5fd8
commit cc00cbedbe
1 changed files with 14 additions and 19 deletions
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33
cocos/renderer/CCRenderer.cpp
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@ -1031,32 +1031,27 @@ bool Renderer::checkVisibility(const Mat4 &transform, const Size &size)
// only cull the default camera. The culling algorithm is valid for default camera.
if (scene && scene->_defaultCamera != Camera::getVisitingCamera())
return true;
// half size of the screen
Size screen_half = Director::getInstance()->getWinSize();
screen_half.width /= 2;
screen_half.height /= 2;
auto director = Director::getInstance();
Rect visiableRect(director->getVisibleOrigin(), director->getVisibleSize());
// transform center point to screen space
float hSizeX = size.width/2;
float hSizeY = size.height/2;
Vec4 v4world, v4local;
v4local.set(hSizeX, hSizeY, 0, 1);
transform.transformVector(v4local, &v4world);
// center of screen is (0,0)
v4world.x -= screen_half.width;
v4world.y -= screen_half.height;
Vec3 v3p(hSizeX, hSizeY, 0);
transform.transformPoint(&v3p);
Vec2 v2p = Camera::getVisitingCamera()->projectGL(v3p);
// convert content size to world coordinates
float wshw = std::max(fabsf(hSizeX * transform.m[0] + hSizeY * transform.m[4]), fabsf(hSizeX * transform.m[0] - hSizeY * transform.m[4]));
float wshh = std::max(fabsf(hSizeX * transform.m[1] + hSizeY * transform.m[5]), fabsf(hSizeX * transform.m[1] - hSizeY * transform.m[5]));
// compare if it in the positive quadrant of the screen
float tmpx = (fabsf(v4world.x)-wshw);
float tmpy = (fabsf(v4world.y)-wshh);
bool ret = (tmpx < screen_half.width && tmpy < screen_half.height);
// enlarge visable rect half size in screen coord
visiableRect.origin.x -= wshw;
visiableRect.origin.y -= wshh;
visiableRect.size.width += wshw * 2;
visiableRect.size.height += wshh * 2;
bool ret = visiableRect.containsPoint(v2p);
return ret;
}