examples/opengl/rokuro.py

   1 #!/usr/bin/python\r
   2 # coding: utf-8\r
   3 \r
   4 from OpenGL.GL import *\r
   5 from OpenGL.GLU import *\r
   6 \r
   7 from . import baseview\r
   8 \r
   9 class RokuroView(baseview.BaseView):\r
  10     def __init__(self, distance):\r
  11         super(RokuroView, self).__init__()\r
  12         self.w=1\r
  13         self.h=1\r
  14         self.head=0\r
  15         self.pitch=0\r
  16         self.distance=distance\r
  17         self.shiftX=0\r
  18         self.shiftY=0\r
  19         self.aspect=1\r
  20         self.n=1\r
  21         self.f=10000\r
  22 \r
  23     def onResize(self, w=None, h=None):\r
  24         super(RokuroView, self).onResize(w, h)\r
  25         self.aspect=float(self.w)/float(self.h)\r
  26 \r
  27     def dolly(self, d):\r
  28         if d>0:\r
  29             self.distance*=1.1\r
  30         elif d<0:\r
  31             self.distance*=0.9\r
  32 \r
  33     def shift(self, dx, dy):\r
  34         FACTOR=0.001\r
  35         self.shiftX+=dx * self.distance * FACTOR\r
  36         self.shiftY+=dy * self.distance * FACTOR\r
  37 \r
  38     def rotate(self, head, pitch):\r
  39         self.head+=head\r
  40         self.pitch+=pitch\r
  41 \r
  42     def updateProjection(self):\r
  43         gluPerspective(30, self.aspect, self.n, self.f)\r
  44 \r
  45     def updateView(self):\r
  46         glTranslate(self.shiftX, self.shiftY, -self.distance)\r
  47         glRotate(self.head, 0, 1, 0)\r
  48         glRotate(self.pitch, 1, 0, 0)\r
  49 \r
  50     def onMotion(self, x, y):\r
  51         redraw=False\r
  52         if self.isLeftDown:\r
  53             self.dolly(y-self.y)\r
  54             redraw=True\r
  55         if self.isMiddelDown:\r
  56             self.shift(x-self.x, self.y-y)\r
  57             redraw=True\r
  58         if self.isRightDown:\r
  59             self.rotate(x-self.x, y-self.y)\r
  60             redraw=True\r
  61         self.x=x\r
  62         self.y=y\r
  63         return redraw\r
  64 \r
  65     def onWheel(self, d):\r
  66         if d!=0:\r
  67             self.dolly(d)\r
  68             return True\r
  69 \r