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39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
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#!/usr/bin/env python3
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#
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# OperatorRotate.py
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# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
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#
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from Operator import Operator
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import math
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class OperatorRotate(Operator):
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name = "Rotate"
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#
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# apply2(self, mapPoint, mousePoint, regionOld, region)
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def apply2(self, mapPoint, mousePoint, regionOld, region):
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if self.originPoint == None:
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self.originPoint = list(mousePoint)
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delta = [b - a for a, b in zip(self.originPoint, mousePoint)]
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radius = math.sqrt(math.pow(delta[0], 2) + math.pow(delta[1], 2))
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if radius >= 10:
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regionSize = (len(region[0]), len(region))
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theta = math.atan2(-delta[1], delta[0]); cos, sin = math.cos(theta), math.sin(theta);
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for numCol in range(regionSize[0]):
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for numRow in range(regionSize[1]):
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numRow_, numCol_ = (numRow / regionSize[1]) * 2 - 1, (numCol / regionSize[0]) * 2 - 1
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b, a = (numCol_ * sin) + (numRow_ * cos), (numCol_ * cos) - (numRow_ * sin)
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numRow_, numCol_ = int((b + 1) / 2 * regionSize[1]), int((a + 1) / 2 * regionSize[0])
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if (numRow_ < regionSize[1]) and (numCol_ < regionSize[0]):
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region[numRow][numCol] = list(regionOld[numRow_][numCol_])
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return region
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else:
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return region
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# __init__(self, *args): initialisation method
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def __init__(self, *args):
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self.originPoint = None
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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