Changeset 3441 in orxonox.OLD for orxonox/trunk

Timestamp:

Mar 1, 2005, 9:24:44 PM (20 years ago)

Author:

bensch

Message:

orxonox/trunk: implemented attenuation

Location:

orxonox/trunk/src

Files:

• light.cc (modified) (2 diffs)
• light.h (modified) (3 diffs)
• world.cc (modified) (1 diff)

orxonox/trunk/src/light.cc

@@ -250 +250 @@
 
 /**
+   \brief Sets the AttenuationType of this Light Source
+   \param type the AttenuationType to set
+   \param factor the Factor to multipy the attenuation with
+
+   this actually just sets the following: glLightf(currentLight, type, factor)
+*/
+void Light::setAttenuation(AttenuationType type, float factor)
+{
+  if (!this->currentLight)
+    { 
+      PRINTF(1)("no Light defined yet\n");
+      return;
+    }
+  this->currentLight->attenuationFactor = factor;
+  this->currentLight->attenuationType = type;
+  switch (type)
+    {
+    case CONSTANT:
+      glLightf(lightsV[this->currentLight->lightNumber], GL_CONSTANT_ATTENUATION, factor);
+      break;
+    case LINEAR:
+      glLightf(lightsV[this->currentLight->lightNumber], GL_LINEAR_ATTENUATION, factor);
+      break;
+    case QUADRATIC:
+      glLightf(lightsV[this->currentLight->lightNumber], GL_QUADRATIC_ATTENUATION, factor);
+      break;
+    }
+}
+
+
+/**
    \brief sets the ambient Color of the Scene
    \param r red
@@ -263 +294 @@
 
   glLightfv (GL_LIGHT0, GL_AMBIENT, this->ambientColor);
-
 }
 

orxonox/trunk/src/light.h

@@ -15 +15 @@
 
 #define NUMBEROFLIGHTS GL_MAX_LIGHTS
+
+enum AttenuationType {CONSTANT, LINEAR, QUADRATIC};
 
 // FORWARD DEFINITIONS //
@@ -34 +36 @@
     GLfloat diffuseColor[4];    //!< The Diffuse Color this Light emmits.
     GLfloat specularColor[4];   //!< The specular Color of this Light.
-    GLint attenuationType;      //!< The AttenuationType of this Light. \todo implements this;
+    AttenuationType attenuationType;//!< The AttenuationType of this Light.
+    float attenuationFactor;    //!< the Factor the attenuation should have.
 
     LightValue* next;
@@ -64 +67 @@
   void setDiffuseColor(GLfloat r, GLfloat g, GLfloat b);
   void setSpecularColor(GLfloat r, GLfloat g, GLfloat b);
+  void setAttenuation(AttenuationType type, float factor);
   void setAmbientColor(GLfloat r, GLfloat g, GLfloat b);
   // get Attributes

orxonox/trunk/src/world.cc

@@ -174 +174 @@
   light = Light::getInstance();
   light->addLight(0);
-  light->setPosition(10.0, 10.0, 19.0);
+  light->setAttenuation(QUADRATIC, 1.0);
+  light->setPosition(10.0, 100.0, 19.0);
 
   //  BezierCurve* tmpCurve = new BezierCurve();