#!/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))