Class TextureStimulus

         object --+            
                  |            
ClassWithParameters --+        
                      |        
               Stimulus --+    
                          |    
   TextureStimulusBaseClass --+
                              |
                             TextureStimulus

Known Subclasses:

Text

A textured rectangle.

This is mainly for 2D use (z coordinate fixed to 0.0 and w
coordinated fixed to 1.0 if not given).


Parameters
==========
anchor             -- specifies how position parameter is interpreted (String)
                      Default: lowerleft
angle              -- units: degrees, 0=right, 90=up (Real)
                      Default: 0.0
color              -- texture environment color. alpha ignored (if given) for max_alpha parameter (AnyOf(Sequence3 of Real or Sequence4 of Real))
                      Default: (1.0, 1.0, 1.0)
depth_test         -- perform depth test? (Boolean)
                      Default: False
mask               -- optional masking function (Instance of <class 'VisionEgg.Textures.Mask2D'>)
                      Default: (determined at instantiation)
max_alpha          -- controls opacity. 1.0=copletely opaque, 0.0=completely transparent (Real)
                      Default: 1.0
on                 -- draw stimulus? (Boolean)
                      Default: True
position           -- units: eye coordinates (AnyOf(Sequence2 of Real or Sequence3 of Real or Sequence4 of Real))
                      Default: (0.0, 0.0)
size               -- defaults to texture data size (units: eye coordinates) (Sequence2 of Real)
                      Default: (determined at instantiation)
texture            -- source of texture data (Instance of <class 'VisionEgg.Textures.Texture'>)
                      Inherited from TextureStimulusBaseClass
                      Default: (determined at instantiation)
texture_mag_filter -- OpenGL filter enum (Integer)
                      Inherited from TextureStimulusBaseClass
                      Default: GL_LINEAR
texture_min_filter -- OpenGL filter enum (Integer)
                      Inherited from TextureStimulusBaseClass
                      Default: (GL enum determined at instantiation)
texture_wrap_s     -- OpenGL texture wrap enum (Integer)
                      Inherited from TextureStimulusBaseClass
                      Default: (GL enum determined at instantiation)
texture_wrap_t     -- OpenGL texture wrap enum (Integer)
                      Inherited from TextureStimulusBaseClass
                      Default: (GL enum determined at instantiation)

Constant Parameters
===================
internal_format   -- format with which OpenGL uses texture data (OpenGL data type enum) (Integer)
                     Default: GL_RGB
mipmaps_enabled   -- Are mipmaps enabled? (Boolean)
                     Default: True
shrink_texture_ok -- Allow automatic shrinking of texture if too big? (Boolean)
                     Default: False

Instantiate and get ready to draw.

Set parameter values and create anything needed to draw the
stimulus including OpenGL state variables such display lists
and texture objects.

Draw the stimulus. (Called by Viewport instance.)

This method is called every frame.  This method actually
performs the OpenGL calls to draw the stimulus.