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Rotate around anchor point

This commit is contained in:
Nite Luo 2014-06-30 17:19:51 -07:00
parent 60a791ac12
commit a81bea886e
1 changed files with 10 additions and 1 deletions
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11
cocos/2d/CCNode.cpp
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@ -1638,7 +1638,6 @@ const Mat4& Node::getNodeToParentTransform() const
y += sy * -_anchorPointInPoints.x * _scaleX + cx * -_anchorPointInPoints.y * _scaleY;
}
// Build Transform Matrix
// Adjusted transform calculation for rotational skew
float mat[] = {
@ -1649,6 +1648,11 @@ const Mat4& Node::getNodeToParentTransform() const
_transform.set(mat);
if(!_ignoreAnchorPointForPosition)
{
_transform.translate(_anchorPointInPoints.x * _scaleX, _anchorPointInPoints.y * _scaleY, 0);
}
// XXX
// FIX ME: Expensive operation.
// FIX ME: It should be done together with the rotationZ
@ -1663,6 +1667,11 @@ const Mat4& Node::getNodeToParentTransform() const
_transform = _transform * rotX;
}
if(!_ignoreAnchorPointForPosition)
{
_transform.translate(-_anchorPointInPoints.x * _scaleX, -_anchorPointInPoints.y * _scaleY, 0);
}
// XXX: Try to inline skew
// If skew is needed, apply skew and then anchor point
if (needsSkewMatrix)