virtual void updateTransform() override
{
if (isDirty())
{
_transformToBatch = getNodeToParentTransform();
Size &size = _rect.size;
float x1 = _offsetPosition.x;
float y1 = _offsetPosition.y;
float x2 = x1 + size.width;
float y2 = y1 + size.height;
if (_flippedX)
{
std::swap(x1, x2);
}
if (_flippedY)
{
std::swap(y1, y2);
}
float x = _transformToBatch.m[12];
float y = _transformToBatch.m[13];
float cr = _transformToBatch.m[0];
float sr = _transformToBatch.m[1];
float cr2 = _transformToBatch.m[5];
float sr2 = -_transformToBatch.m[4];
float ax = x1 * cr - y1 * sr2 + x;
float ay = x1 * sr + y1 * cr2 + y;
float bx = x2 * cr - y1 * sr2 + x;
float by = x2 * sr + y1 * cr2 + y;
float cx = x2 * cr - y2 * sr2 + x;
float cy = x2 * sr + y2 * cr2 + y;
float dx = x1 * cr - y2 * sr2 + x;
float dy = x1 * sr + y2 * cr2 + y;
_quad.bl.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(ax), SPRITE_RENDER_IN_SUBPIXEL(ay), _positionZ);
_quad.br.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(bx), SPRITE_RENDER_IN_SUBPIXEL(by), _positionZ);
_quad.tl.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(dx), SPRITE_RENDER_IN_SUBPIXEL(dy), _positionZ);
_quad.tr.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(cx), SPRITE_RENDER_IN_SUBPIXEL(cy), _positionZ);
if (_textureAtlas)
{
_textureAtlas->updateQuad(&_quad, _atlasIndex);
}
_recursiveDirty = false;
setDirty(false);
}
Node::updateTransform();
}
void Sprite::updateTransform()
{
CCASSERT(_batchNode, "updateTransform is only valid when Sprite is being rendered using an SpriteBatchNode");
// recalculate matrix only if it is dirty
if( isDirty() ) {
// If it is not visible, or one of its ancestors is not visible, then do nothing:
if( !_visible || ( _parent && _parent != _batchNode && static_cast<Sprite*>(_parent)->_shouldBeHidden) )
{
_quad.br.vertices.setZero();
_quad.tl.vertices.setZero();
_quad.tr.vertices.setZero();
_quad.bl.vertices.setZero();
_shouldBeHidden = true;
}
else
{
_shouldBeHidden = false;
if( ! _parent || _parent == _batchNode )
{
_transformToBatch = getNodeToParentTransform();
}
else
{
CCASSERT( dynamic_cast<Sprite*>(_parent), "Logic error in Sprite. Parent must be a Sprite");
const Mat4 &nodeToParent = getNodeToParentTransform();
Mat4 &parentTransform = static_cast<Sprite*>(_parent)->_transformToBatch;
_transformToBatch = parentTransform * nodeToParent;
}
//
// calculate the Quad based on the Affine Matrix
//
Size &size = _rect.size;
float x1 = _offsetPosition.x;
float y1 = _offsetPosition.y;
float x2 = x1 + size.width;
float y2 = y1 + size.height;
float x = _transformToBatch.m[12];
float y = _transformToBatch.m[13];
float cr = _transformToBatch.m[0];
float sr = _transformToBatch.m[1];
float cr2 = _transformToBatch.m[5];
float sr2 = -_transformToBatch.m[4];
float ax = x1 * cr - y1 * sr2 + x;
float ay = x1 * sr + y1 * cr2 + y;
float bx = x2 * cr - y1 * sr2 + x;
float by = x2 * sr + y1 * cr2 + y;
float cx = x2 * cr - y2 * sr2 + x;
float cy = x2 * sr + y2 * cr2 + y;
float dx = x1 * cr - y2 * sr2 + x;
float dy = x1 * sr + y2 * cr2 + y;
_quad.bl.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(ax), SPRITE_RENDER_IN_SUBPIXEL(ay), _positionZ);
_quad.br.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(bx), SPRITE_RENDER_IN_SUBPIXEL(by), _positionZ);
_quad.tl.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(dx), SPRITE_RENDER_IN_SUBPIXEL(dy), _positionZ);
_quad.tr.vertices.set(SPRITE_RENDER_IN_SUBPIXEL(cx), SPRITE_RENDER_IN_SUBPIXEL(cy), _positionZ);
setTextureCoords(_rect);
}
// MARMALADE CHANGE: ADDED CHECK FOR nullptr, TO PERMIT SPRITES WITH NO BATCH NODE / TEXTURE ATLAS
if (_textureAtlas)
{
_textureAtlas->updateQuad(&_quad, _atlasIndex);
}
_recursiveDirty = false;
setDirty(false);
}
Node::updateTransform();
}
