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#! /usr/bin/env python
"""Simple GLU Tess-object test w/out combine callback"""
from OpenGLContext import testingcontext
BaseContext, MainFunction = testingcontext.getInteractive()
from OpenGLContext.scenegraph import polygontessellator, vertex
from OpenGL.GL import *
from OpenGL.GLU import *
from Numeric import *
outline = array([
[ 0, 0, 0],
[ 1, 1, 0],
[ -1, 1, 0],
], 'd')
class TestContext( BaseContext ):
scale = 1.0
def OnInit( self ):
self.tess = polygontessellator.PolygonTessellator()
def Render( self, mode = 0):
BaseContext.Render( self, mode )
self.renderCap( self.scale )
def renderCap( self, scale = 1.0):
"""The cap is generated with GLU tessellation routines...
"""
vertices = [
vertex.Vertex( (x/scale,y/scale,z/scale) ) for (x,y,z) in outline
]
glColor3f( 1,0,0)
glDisable( GL_LIGHTING)
for type, vertices in self.tess.tessellate( vertices, forceTriangles=0 ):
print ' geometry type %s, %s vertices (GL_TRIANGLES=%s GL_TRIANGLE_FAN=%s GL_TRIANGLE_STRIP=%s)'%(
type,
len(vertices),
GL_TRIANGLES, GL_TRIANGLE_FAN, GL_TRIANGLE_STRIP
)
glNormal3f( 0,0,1 )
glBegin( type )
for v in vertices:
glVertex2dv( v.point[:2] )
glEnd()
if __name__ == "__main__":
MainFunction ( TestContext)
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