Changeset 1345 for trunk/pysoy/src/scenes/Scene.pym

Timestamp:

08/09/08 17:20:02 (4 months ago)

Author:

JonNeal

Message:

Ticket #900:

• Added in basic fog support through a property.
  
• Changed a few checks in Planar.pym to asserts
  

Files:

• trunk/pysoy/src/scenes/Scene.pym (modified) (7 diffs)

trunk/pysoy/src/scenes/Scene.pym

@@ -45 +45 @@
     self._lights       = soy._internals.Children()
     self._ambient      = gray
+    self._fogDensity   = 0.0
     self._stepSize     = 0.01
     self._friction     = 0
@@ -78 +79 @@
 
     return '<Scene with %s>' % ', '.join(report)
+  
+  ############################################################################
+  #
+  # Properties
+  #
+  
+  property fog :
+    '''Scene fog
+
+    This is a scene-wide layer of fog of which the density is set by you
+
+    Takes a float for fog density from 0-2, fog is disabled when at 0.
+    '''
+    def __get__(self) :
+      return self._fogDensity
+    
+    def __set__(self, value) :
+      assert type(value) == float and value <= 2 and value >= 0, \
+          "Fog density must be a float in the range of 0-2."
+      self._fogDensity = value
 
   ############################################################################
@@ -127 +148 @@
                           gl.GLdouble _znear, gl.GLdouble _zfar) :
     cdef int _i
-    cdef gl.GLfloat _density, _fogColor[4]
-    _density = .3
+    cdef gl.GLfloat _fogColor[4]
     _fogColor[0] = .5
     _fogColor[1] = .5
@@ -145 +165 @@
     gl.glEnable(gl.GL_LIGHTING)
     gl.glLightModelfv(gl.GL_LIGHT_MODEL_AMBIENT, self._ambient._rgba)
+    
+    if self._fogDensity > 0 :
+      #
+      # Turn on some fog!
+      gl.glClearColor(0.5,0.5,0.5,1.0)  # We'll Clear To The Color Of The Fog ( Modified )
+      gl.glEnable(gl.GL_FOG)                    #Enables GL_FOG
+      gl.glFogi(gl.GL_FOG_MODE, gl.GL_EXP2)     #Fog Mode
+      gl.glFogfv(gl.GL_FOG_COLOR, _fogColor)    #Set Fog Color
+      gl.glFogf(gl.GL_FOG_DENSITY, self._fogDensity/10)        #How Dense Will The Fog Be
+      gl.glHint(gl.GL_FOG_HINT, gl.GL_NICEST)   #Fog Hint Value
+      gl.glFogf(gl.GL_FOG_START, 1.0)           #Fog Start Depth
+      gl.glFogf(gl.GL_FOG_END, 50.0)             #Fog End Depth
+
     #
     # Turn on each light, keep it's iteration locked against mod until done
@@ -151 +184 @@
       # This is a quick hack (gl.GL_LIGHT0 + _i)
       (<soy.bodies.Light> self._lights._list[_i])._on(gl.GL_LIGHT0 + _i)
-    
-    #
-    # Turn on some fog!
-    gl.glFogi(gl.GL_FOG_MODE, gl.GL_EXP2)
-    gl.glFogfv(gl.GL_FOG_COLOR, _fogColor)
-    gl.glFogf(gl.GL_FOG_DENSITY, _density)
-    gl.glHint (gl.GL_FOG_HINT, gl.GL_NICEST)
-    gl.glEnable(gl.GL_FOG)
+ 
+
     
     #
@@ -169 +196 @@
          (<soy.bodies.Body> self._bodies._list[_i]))
     self._bodies._iterDone()
-    gl.glDisable(gl.GL_FOG)
     
     #
@@ -177 +203 @@
       (<soy.bodies.Light> self._lights._list[_i])._off(gl.GL_LIGHT0 + _i)
     self._lights._iterDone()
+    
+    if self._fogDensity > 0 :
+      gl.glDisable(gl.GL_FOG)
     gl.glDisable(gl.GL_LIGHTING)
     gl.glDisable(gl.GL_DEPTH_TEST)