May be your problem is in the projection matrix.
The Manual says: "The /default pyglet projection/ has a depth range of
(-1, 1) -- images drawn with a z value outside this range will not be
visible". You are rotating a very big triangle, so you see only a tiny
slice,
If you want to see the Z axis, lets say a depth range from -2000 to
2000, you have to override the default handler:
@window.event
def on_resize(width, height):
glViewport(0, 0, width, height)
glMatrixMode(gl.GL_PROJECTION)
glLoadIdentity()
glOrtho(0, width, 0, height, -2000, 2000)
glMatrixMode(gl.GL_MODELVIEW)
I think this could help you:
http://groups.google.com/group/pyglet-users/web/pyglet-projection-matrix
El 22/04/2010 4:31, Alejandro Castellanos escribió:
What I'm doing is basically this, so here's the code:
------------------------------------------------------------
# -*- coding: cp1252 -*-
import pyglet
import math
from pyglet.gl import *
# Direct OpenGL commands to this window.
window = pyglet.window.Window(resizable=True)
@window.event
def on_draw():
glClear(GL_COLOR_BUFFER_BIT)
glLoadIdentity()
#glTranslatef(50.0,0.0,0.0)#Sirve para mover la vista de la
ventana(o algo asi).
rtri = 15
glRotatef(rtri,0.0,0.0,1.0)#Rotating around Z.
#glRotatef(rtri,0.0,1.0,0.0)#Rotating around Y.
#glRotatef(rtri,1.0,0.0,0.0)#Rotting around X.
#COMENZANDO A DIBUJAR EL TRIANGULO.
glBegin(GL_TRIANGLES)
glColor3f(1.0,0.0,0.0)#Color, justo antes del primer vertice (en
RGB---ROJO).
glVertex3f(window.width/2,window.height,0.0)#SUPERIOR.
glColor3f(0.0,1.0,0.0)#Color, justo antes del segundo vertice (en
RGB---VERDE).
glVertex3f(100.0,0.0,0.0)#INFERIOR IZQUIERDO.
glColor3f(0.0,0.0,1.0)#Color, justo antes del tercer vertice (en
RGB---AZUL).
glVertex3f(window.width,0.0,0.0)#INFERIOR DERECHO.
glEnd()
pyglet.app.run()
------------------------------------------------------------
The triangle basically disappears if I don't use decimals in 'rtri'.
If I use the decimals, it is when the triangle starts getting
'slashed.'
On 21 abr, 19:25, Greg Ewing<[email protected]> wrote:
On 22/04/10 13:21, Alejandro Castellanos wrote:
But I'm having to use glRotatef(rtri, 0.0, 0.0, 1.0); which, yet
again, rotates around the Z axis but 'slashes' the figure if I attempt
to rotate around X or Y.
You'll have to show us the code you're using to rotate
about the other axes.
It should be something like
glRotatef(rtri, 1.0, 0.0, 0.0) # x-axis
glRotatef(rtri, 0.0, 1.0, 0.0) # y-axis
As for the "slashing", it sounds like the triangle
is getting clipped by something, maybe the near or
far plane. It might be that the triangle is actually
getting rotated correctly, but you're having trouble
seeing it because of clipping.
--
Greg
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