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comparison stageviewer.py @ 11:548662d70860

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Add some explanations to the magic constants
author Thibaut Girka <thib@sitedethib.com>
date Wed, 03 Aug 2011 15:25:26 +0200
parents 059ea0ea8d38
children 58bc264aba38
comparison
equal deleted inserted replaced
10:059ea0ea8d38 11:548662d70860
260 z = z1 + (z2 - z1) * truc 260 z = z1 + (z2 - z1) * truc
261 261
262 262
263 glMatrixMode(GL_MODELVIEW) 263 glMatrixMode(GL_MODELVIEW)
264 glLoadIdentity() 264 glLoadIdentity()
265 # Some explanations on the magic constants:
266 # 192. = 384. / 2. = width / 2.
267 # 224. = 448. / 2. = height / 2.
268 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2))
269 # This is so that objects on the (O, x, y) plane use pixel coordinates
265 gluLookAt(192., 224., - 835.979370 * dz, 270 gluLookAt(192., 224., - 835.979370 * dz,
266 192., 224. - dy, 750 - 835.979370 * dz, 0., -1., 0.) #TODO: 750 might not be accurate 271 192., 224. - dy, 750 - 835.979370 * dz, 0., -1., 0.) #TODO: 750 might not be accurate
267 #print(glGetFloat(GL_MODELVIEW_MATRIX)) 272 #print(glGetFloat(GL_MODELVIEW_MATRIX))
268 glTranslatef(-x, -y, -z) 273 glTranslatef(-x, -y, -z)
269 274
270 glDrawArrays(GL_QUADS, 0, nb_vertices) 275 glDrawArrays(GL_QUADS, 0, nb_vertices)
276
277 #TODO: show the game itself
278 # It is displayed on (0, 0, 0), (0, 448, 0), (388, 448, 0), (388, 0, 0)
279 # using a camera at (192, 224, -835.979370) looking right behind itself
280 # Depth test should be disabled when rendering the game
271 281
272 pygame.display.flip() 282 pygame.display.flip()
273 clock.tick(120) 283 clock.tick(120)
274 frame += 1 284 frame += 1
275 285