Changeset 6787 in orxonox.OLD for branches/network/src/lib/graphics/effects

Timestamp:

Jan 27, 2006, 11:11:25 AM (19 years ago)

Author:

patrick

Message:

newtork: the lenseflare algorithm should be finished

Location:

branches/network/src/lib/graphics/effects

Files:

• lense_flare.cc (modified) (4 diffs)
• lense_flare.h (modified) (2 diffs)

branches/network/src/lib/graphics/effects/lense_flare.cc

@@ -26 +26 @@
 
 #include "light.h"
+#include "state.h"
 
 #include "render2D/billboard.h"
@@ -43 +44 @@
   if (root != NULL)
     this->loadParams(root);
+
+  this->flareMatrix = new float[14];
+  /*          length                      image scale */
+  this->flareMatrix[0] = 1.0f; this->flareMatrix[1] = 1.0f;
+  this->flareMatrix[2] = 0.5f; this->flareMatrix[3] = 0.5f;
+  this->flareMatrix[4] = 0.33f; this->flareMatrix[5] = 0.25f;
+  this->flareMatrix[6] = 0.125f; this->flareMatrix[7] = 1.0f;
+  this->flareMatrix[8] = -0.5f; this->flareMatrix[9] = 0.5f;
+  this->flareMatrix[10] = -0.25f; this->flareMatrix[11] = 0.25f;
+  this->flareMatrix[12] = 1.82f; this->flareMatrix[13] = 0.25f;
 }
 
@@ -116 +127 @@
 void LenseFlare::addFlare(const char* textureName)
 {
+  if( this->flares.size() < LF_MAX_FLARES)
+  {
+    PRINTF(2)("You tried to add more than %i lense flares, ignoring\n", LF_MAX_FLARES);
+    return;
+  }
+
   Billboard* bb = new Billboard(NULL);
   bb->setTexture(textureName);
   this->flares.push_back(bb);
+  PRINTF(0)("Added a Lenseflare Billboard with texture %s\n", textureName);
 
   // the first flare belongs to the light source
@@ -134 +152 @@
 void LenseFlare::tick(float dt)
 {
+  if( unlikely(!this->bActivated || this->flares.size() == 0))
+    return;
+  // always update the screen center, it could be, that the window is resized
+  this->screenCenter = Vector(State::getResX()/2.0f, State::getResY()/2.0f, 0.0f);
+  // flare vector is the direction from the center to the light source
+  this->flareVector = this->flares[0]->getAbsCoor2D();
+  this->distance = this->flareVector.len();
+  this->flareVector.normalize();
 
+  // now calculate the new coordinates of the billboards
+  std::vector<Billboard*>::iterator it;
+  int i;
+  for( it = flares.begin(), i = 0; it != flares.end(); it++, i++)
+  {
+    // set the new position
+    (*it)->setAbsCoor2D(this->flareVector * this->flareMatrix[i * 2]);
+    PRINTF(0)("Drawing flare %i @ (%f, %f)\n", i, (this->flareVector * this->flareMatrix[i * 2]).x, (this->flareVector * this->flareMatrix[i * 2]).y);
+    // tick them
+    (*it)->tick(dt);
+  }
 }
 

branches/network/src/lib/graphics/effects/lense_flare.h

@@ -12 +12 @@
 
 #include "vector.h"
+
+
+#define LF_MAX_FLARES 7
+
 
 class TiXmlElement;
@@ -46 +50 @@
 
     Vector                   flareVector;        //!< the axis to draw the flares on
+    float                    distance;           //!< distance from center to source
     Vector                   screenCenter;       //!< the vector marking the center of the screen
+
+    float*                   flareMatrix;
 };