Source Code for Module toon.draw

  1  #!/usr/bin/env python 
  2  # 
  3  # Toonloop for Python 
  4  # 
  5  # Copyright 2008 Alexandre Quessy & Tristan Matthews 
  6  # <alexandre@quessy.net> & <le.businessman@gmail.com> 
  7  # http://www.toonloop.com 
  8  # 
  9  # Original idea by Alexandre Quessy 
 10  # http://alexandre.quessy.net 
 11  # 
 12  # Toonloop is free software: you can redistribute it and/or modify 
 13  # it under the terms of the GNU General Public License as published by 
 14  # the Free Software Foundation, either version 3 of the License, or 
 15  # (at your option) any later version. 
 16  # 
 17  # Toonloop is distributed in the hope that it will be useful, 
 18  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
 19  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 20  # GNU General Public License for more details. 
 21  # 
 22  # You should have received a copy of the gnu general public license 
 23  # along with Toonloop.  If not, see <http://www.gnu.org/licenses/>. 
 24  # 
 25  import pygame 
 26  from OpenGL.GL import * 
 27  """ 
 28  Draws things in OpenGL 
 29  """ 
 30  # no need for glut for now 
 31  # from OpenGL.GLUT import * 
 32  #  
 33  # def draw_text(text, font=GLUT_STROKE_ROMAN): 
 34  #     """ 
 35  #     Draws text in OpenGL 
 36  #     """ 
 37  #     #font=GLUT_BITMAP_TIMES_ROMAN_24 
 38  #     for c in text: 
 39  #         glutStrokeCharacter(font, ord(c)) 
 40  #         # glutBitmapCharacter(font, ord(c)) 
 41   
 42 -def texture_from_image(texture, image, square_texture=False): 
 43      """ 
 44      Copies the pixels from a pygame surface to an OpenGL texture object. 
 45      """ 
 46      textureData = pygame.image.tostring(image, "RGBX", True) # vertically flipped 
 47      if square_texture: 
 48          glBindTexture(GL_TEXTURE_2D, texture) 
 49          glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.get_width(), image.get_height(), 0, \ 
 50                    GL_RGBA, GL_UNSIGNED_BYTE, textureData) 
 51          glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST) 
 52          glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST) 
 53      else:    
 54          glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture) 
 55          glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, image.get_width(), \ 
 56              image.get_height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData) 
 57          glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST) 
 58          glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST) 
 59   
 60 -def draw_textured_square(w=None, h=None): 
 61      """ 
 62      Draws a texture square of 2 x 2 size centered at 0, 0 
 63       
 64      Make sure to call glEnable(GL_TEXTURE_RECTANGLE_ARB) first. 
 65   
 66      :param w: width of the image in pixels 
 67      :param h: height of the image in pixels 
 68      """ 
 69      if w is None or h is None: 
 70          glBegin(GL_QUADS) 
 71          glTexCoord2f(0.0, 0.0) 
 72          glVertex2f(-1.0, -1.0) # Bottom Left Of The Texture and Quad 
 73          glTexCoord2f(1.0, 0.0) 
 74          glVertex2f(1.0, -1.0) # Bottom Right Of The Texture and Quad 
 75          glTexCoord2f(1.0, 1.0) 
 76          glVertex2f(1.0, 1.0) # Top Right Of The Texture and Quad 
 77          glTexCoord2f(0.0, 1.0) 
 78          glVertex2f(-1.0, 1.0) # Top Left Of The Texture and Quad 
 79          glEnd() 
 80      else: 
 81          glBegin(GL_QUADS) 
 82          glTexCoord2f(0.0, 0.0) 
 83          glVertex2f(-1.0, -1.0) # Bottom Left 
 84          glTexCoord2f(w, 0.0) 
 85          glVertex2f(1.0, -1.0) # Bottom Right 
 86          glTexCoord2f(w, h) 
 87          glVertex2f(1.0, 1.0) # Top Right 
 88          glTexCoord2f(0.0, h) 
 89          glVertex2f(-1.0, 1.0) # Top Left 
 90          glEnd() 
 91   
 92 -def draw_square(): 
 93      """ 
 94      Draws a square of 2 x 2 size centered at 0, 0 
 95       
 96      Make sure to call glDisable(GL_TEXTURE_RECTANGLE_ARB) first. 
 97      """ 
 98      glBegin(GL_QUADS) 
 99      glVertex2f(-1.0, -1.0) # Bottom Left of Quad 
100      glVertex2f(1.0, -1.0) # Bottom Right of Quad 
101      glVertex2f(1.0, 1.0) # Top Right Of Quad 
102      glVertex2f(-1.0, 1.0) # Top Left Of Quad 
103      glEnd() 
104   
105 -def draw_horizontal_progress_bar(background_color=(0.0, 0.0, 0.0, 1.0), foreground_color=(1.0, 1.0, 1.0, 1.0), progress=0.0, line_color=(0.0, 0.0, 0.0, 1.0)): 
106      """ 
107      Draws an horizontal progress bar. 
108   
109      The programmer should scale this shape, since its position is between  
110      -1 and 1 on both axis. 
111       
112      Make sure to call glDisable(GL_TEXTURE_RECTANGLE_ARB) first. 
113       
114      :param background_color: tuple of 4 floats from 0 to 1 
115      :param foreground_color: tuple of 4 floats from 0 to 1 
116      :param progress: float from 0 to 1 
117      """ 
118      glColor4f(*foreground_color)  
119      glBegin(GL_QUADS) 
120      glVertex2f(-1.0, -1.0) # Bottom Left of Quad 
121      glVertex2f(progress * 2.0 - 1.0, -1.0) # Bottom Right of Quad 
122      glVertex2f(progress * 2.0 - 1.0, 1.0) # Top Right Of Quad 
123      glVertex2f(-1.0, 1.0) # Top Left Of Quad 
124      glEnd() 
125      glColor4f(*background_color)  
126      glBegin(GL_QUADS) 
127      glVertex2f(-1.0, -1.0) # Bottom Left of Quad 
128      glVertex2f(1.0, -1.0) # Bottom Right of Quad 
129      glVertex2f(1.0, 1.0) # Top Right Of Quad 
130      glVertex2f(-1.0, 1.0) # Top Left Of Quad 
131      glEnd() 
132      #glLineWidth(1.0) 
133      glColor4f(*line_color)  
134      glBegin(GL_LINE_LOOP) 
135      glVertex2f(-1.0, -1.0) # Bottom Left of Quad 
136      glVertex2f(1.0, -1.0) # Bottom Right of Quad 
137      glVertex2f(1.0, 1.0) # Top Right Of Quad 
138      glVertex2f(-1.0, 1.0) # Top Left Of Quad 
139      glEnd() 
140