On Sun, Feb 28, 2010 at 4:04 PM, avaitla16 <[email protected]> wrote:
> Hey All,
>
> I've started using pyglet and have built a 3DS max loader with which
> to load vertex coordinates polygons and textures. I'd like to put
> these things into the pyglet app, but I'm having problems configuring
> the z-corrdinate. The objects only seem to display if the z-coordinate
> is between 0 and 1.
>
> Here is my code:
>
>
> #My custom 3DS loader
> import DSMAXLOADER
> import sys
> import os.path
> from pyglet.gl import *
>
> #The format of the vertex list is as follows
> # [(2,3,4), ..., (100,-1, -5)] (a list of 3 tuples)
> #This function will convert into a single tuple
> # (2,3,4,...,100, -1, -5), so that I can load it with pyglet
> # This function also fixes the negative signs
> # and scaling the relative pixels, so that they all fit in a window
> def createvertexlist(vertices):
> store=list()
> for vertex in vertices:
> store+=map(lambda x: x/8+200, list(vertex))
> #This line will simply set all the z-coordinates to 0 (since
> they won't display unless less than 1)
> store[-1]=0
> return tuple(store)
>
>
>
>
>
> if __name__=="__main__":
> #Basic Processing of the 3DS File
> figure=DSMAXLOADER.dsfile()
> if(len(sys.argv)==2):
> filename=sys.argv[1]
> if(os.path.isfile(filename)):
> figure.load(filename)
> else:
> print("Not a File!")
> exit(0)
>
> #Getting the Window
> window = pyglet.window.Window(resizable="True")
> vertices=figure.vertices
> #Fixing the Vertices
> vertices=createvertexlist(vertices)
>
> @window.event
> def on_draw():
> window.clear()
> # Drawing the tuple of coordinates as 3d points
> pyglet.graphics.draw(len(vertices)/3, pyglet.gl.GL_POINTS,
> ('v3f', vertices))
> pyglet.app.run()
>
>
> My question is:
> How do I set it so that z-coordinates greater than 1 or less than
> negative 1 actually show up?
By default pyglet sets up an orthographic projection with a near plane of -1
and a far plane of 1.
You most likely need a perspective projection with a larger value for the
far plane. See the faq for an example:
http://groups.google.com/group/pyglet-users/web/faq
--
Tristam MacDonald
http://swiftcoder.wordpress.com/
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