model-converter-python/d3/controls.py

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#!/usr/bin/env python3
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from .geometry import Vector
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import pygame
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import OpenGL.GL as gl
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import math
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class Controls:
def __init__(self):
pass
def apply(self):
pass
def update(self, time = 10):
pass
class TrackBallControls(Controls):
def __init__(self):
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super().__init__()
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self.vertex = Vector()
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self.theta = 0
def apply(self):
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gl.glRotatef(self.theta * 180 / math.pi, self.vertex.x, self.vertex.y, self.vertex.z)
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def update(self, time = 10):
if not pygame.mouse.get_pressed()[0]:
return
coeff = 0.001
move = pygame.mouse.get_rel()
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dV = Vector(move[1] * time * coeff, move[0] * time * coeff, 0)
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dTheta = dV.norm2()
if abs(dTheta) < 0.00001:
return
dV.normalize()
cosT2 = math.cos(self.theta / 2)
sinT2 = math.sin(self.theta / 2)
cosDT2 = math.cos(dTheta / 2)
sinDT2 = math.sin(dTheta / 2)
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A = cosT2 * sinDT2 * dV + cosDT2 * sinT2 * self.vertex + sinDT2 * sinT2 * Vector.cross_product(dV, self.vertex)
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self.theta = 2 * math.acos(cosT2 * cosDT2 - sinT2 * sinDT2 * Vector.dot(dV, self.vertex))
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self.vertex = A
self.vertex.normalize()
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class OrbitControls(Controls):
def __init__(self):
super().__init__()
self.phi = 0
self.theta = 0
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def apply(self):
gl.glRotatef(self.theta * 180 / math.pi, 1.0, 0.0, 0.0)
gl.glRotatef(self.phi * 180 / math.pi, 0.0, 1.0, 0.0)
def update(self, time = 10):
if not pygame.mouse.get_pressed()[0]:
return
move = pygame.mouse.get_rel()
self.theta += move[1] * 0.01
self.phi += move[0] * 0.01
self.theta = max(min(self.theta, math.pi / 2), -math.pi / 2)