public void visit(GL10 gl) {
// quick return if not visible
if (!visible_) return;
gl.glPushMatrix();
if (grid_ != null && grid_.isActive()) {
grid_.beforeDraw(gl);
transformAncestors(gl);
}
transform(gl);
if (children_ != null) {
for (int i = 0; i < children_.size(); ++i) {
child = children_.get(i);
if (child.zOrder_ < 0) {
child.visit(gl);
} else break;
}
}
draw(gl);
if (children_ != null) {
for (int i = 0; i < children_.size(); ++i) {
child = children_.get(i);
if (child.zOrder_ >= 0) {
child.visit(gl);
}
}
}
if (grid_ != null && grid_.isActive()) {
grid_.afterDraw(gl, this);
}
gl.glPopMatrix();
}
/**
* performs OpenGL view-matrix transformation based on position, scale, rotation and other
* attributes.
*/
public void transform(GL10 gl) {
// transformations
if (ccConfig.CC_NODE_TRANSFORM_USING_AFFINE_MATRIX) {
// BEGIN alternative -- using cached transform
//
if (isTransformGLDirty_) {
CGAffineTransform t = nodeToParentTransform();
CGAffineTransform.CGAffineToGL(t, transformGL_);
isTransformGLDirty_ = false;
}
// gl.glMultMatrixf(transformGL_, transformGL_.length);
gl.glMultMatrixf(transformGL_, 0);
if (vertexZ_ != 0) gl.glTranslatef(0, 0, vertexZ_);
// XXX: Expensive calls. Camera should be integrated into the cached affine matrix
if (camera_ != null && !(grid_ != null && grid_.isActive())) {
boolean translate = (anchorPointInPixels_.x != 0.0f || anchorPointInPixels_.y != 0.0f);
if (translate)
gl.glTranslatef(
RENDER_IN_SUBPIXEL(anchorPointInPixels_.x),
RENDER_IN_SUBPIXEL(anchorPointInPixels_.y),
0);
camera_.locate(gl);
if (translate)
gl.glTranslatef(
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.x),
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.y),
0);
}
// END alternative
} else {
// BEGIN original implementation
//
// translate
if (isRelativeAnchorPoint_ && (anchorPointInPixels_.x != 0 || anchorPointInPixels_.y != 0))
gl.glTranslatef(
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.x),
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.y),
0);
if (anchorPointInPixels_.x != 0 || anchorPointInPixels_.y != 0)
gl.glTranslatef(
RENDER_IN_SUBPIXEL(position_.x + anchorPointInPixels_.x),
RENDER_IN_SUBPIXEL(position_.y + anchorPointInPixels_.y),
vertexZ_);
else if (position_.x != 0 || position_.y != 0 || vertexZ_ != 0)
gl.glTranslatef(RENDER_IN_SUBPIXEL(position_.x), RENDER_IN_SUBPIXEL(position_.y), vertexZ_);
// rotate
if (rotation_ != 0.0f) gl.glRotatef(-rotation_, 0.0f, 0.0f, 1.0f);
// scale
if (scaleX_ != 1.0f || scaleY_ != 1.0f) gl.glScalef(scaleX_, scaleY_, 1.0f);
if (camera_ != null && !(grid_ != null && grid_.isActive())) camera_.locate(gl);
// restore and re-position point
if (anchorPointInPixels_.x != 0.0f || anchorPointInPixels_.y != 0.0f)
gl.glTranslatef(
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.x),
RENDER_IN_SUBPIXEL(-anchorPointInPixels_.y),
0);
//
// END original implementation
}
}