public virtual AsMatrix getTransformationMatrix(AsDisplayObject targetSpace, AsMatrix resultMatrix) { if (resultMatrix != null) { resultMatrix.identity(); } else { resultMatrix = new AsMatrix(); } AsDisplayObject currentObject = this; if (targetSpace == this) { return(resultMatrix); } else { if (targetSpace == mParent || (targetSpace == null && mParent == null)) { if (mPivotX != 0.0f || mPivotY != 0.0f) { resultMatrix.translate(-mPivotX, -mPivotY); } if (mScaleX != 1.0f || mScaleY != 1.0f) { resultMatrix.scale(mScaleX, mScaleY); } if (mRotation != 0.0f) { resultMatrix.rotate(AsMathHelper.toRadians(mRotation)); } if (mX != 0.0f || mY != 0.0f) { resultMatrix.translate(mX, mY); } return(resultMatrix); } else { if (targetSpace == null) { currentObject = this; while (currentObject != null) { currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix); resultMatrix.concat(sHelperMatrix); currentObject = currentObject.getParent(); } return(resultMatrix); } else { if (targetSpace.mParent == this) { targetSpace.getTransformationMatrix(this, resultMatrix); resultMatrix.invert(); return(resultMatrix); } } } } sAncestors.setLength(0); AsDisplayObject commonParent = null; while (currentObject != null) { sAncestors.push(currentObject); currentObject = currentObject.getParent(); } currentObject = targetSpace; while (currentObject != null && sAncestors.indexOf(currentObject) == -1) { currentObject = currentObject.getParent(); } if (currentObject == null) { throw new AsArgumentError("Object not connected to target"); } else { commonParent = currentObject; } currentObject = this; while (currentObject != commonParent) { currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix); resultMatrix.concat(sHelperMatrix); currentObject = currentObject.getParent(); } sTargetMatrix.identity(); currentObject = targetSpace; while (currentObject != commonParent) { currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix); sTargetMatrix.concat(sHelperMatrix); currentObject = currentObject.getParent(); } sTargetMatrix.invert(); resultMatrix.concat(sTargetMatrix); return(resultMatrix); }
private static bool epsilonEquals(float a, float b) { return(AsMathHelper.epsilonEquals(a, b)); }