#!/usr/bin/env python3
import xasy2asy as xasy2asy
import PyQt5.QtGui as QtGui
import PyQt5.QtCore as QtCore
import numpy as numpy
import math


class xasyTransform:
   @classmethod
   def makeRotTransform(cls, theta, origin):
       if isinstance(origin, QtCore.QPointF) or isinstance(origin, QtCore.QPoint):
           origin = (origin.x(), origin.y())
       rotMat = (math.cos(theta), -math.sin(theta), math.sin(theta), math.cos(theta))
       shift = xasy2asy.asyTransform((0, 0, 1 - rotMat[0], -rotMat[1], -rotMat[2], 1 - rotMat[3])) * origin
       return xasy2asy.asyTransform((shift[0], shift[1], rotMat[0], rotMat[1], rotMat[2], rotMat[3]))

   @classmethod
   def makeScaleTransform(cls, sx, sy, origin):
       if isinstance(origin, QtCore.QPointF) or isinstance(origin, QtCore.QPoint):
           origin = (origin.x(), origin.y())
       shiftMat = xasy2asy.asyTransform((0, 0, 1 - sx, 0, 0, 1 - sy)) * origin
       return xasy2asy.asyTransform((shiftMat[0], shiftMat[1], sx, 0, 0, sy))

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