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#!/usr/bin/env python3
import xasy2asy as x2a
import PyQt5.QtGui as Qg
import PyQt5.QtCore as Qc
import numpy as np
import math
class xasyTransform:
@classmethod
def makeRotTransform(cls, theta, origin):
if isinstance(origin, Qc.QPointF) or isinstance(origin, Qc.QPoint):
origin = (origin.x(), origin.y())
rotMat = (math.cos(theta), -math.sin(theta), math.sin(theta), math.cos(theta))
shift = x2a.asyTransform((0, 0, 1 - rotMat[0], -rotMat[1], -rotMat[2], 1 - rotMat[3])) * origin
return x2a.asyTransform((shift[0], shift[1], rotMat[0], rotMat[1], rotMat[2], rotMat[3]))
@classmethod
def makeScaleTransform(cls, sx, sy, origin):
if isinstance(origin, Qc.QPointF) or isinstance(origin, Qc.QPoint):
origin = (origin.x(), origin.y())
shiftMat = x2a.asyTransform((0, 0, 1 - sx, 0, 0, 1 - sy)) * origin
return x2a.asyTransform((shiftMat[0], shiftMat[1], sx, 0, 0, sy))
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