Initial commit

Torque/SDK/engine/dgl/lensFlare.cc

@@ -0,0 +1,97 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#include "dgl/lensFlare.h"
+#include "dgl/dgl.h"
+
+
+//**************************************************************************
+// Lens Flare
+//**************************************************************************
+
+//--------------------------------------------------------------------------
+// Clean up
+//--------------------------------------------------------------------------
+LensFlare::~LensFlare()
+{
+   for( int i=0; i<mFlareList.size(); i++ )
+   {
+      delete mFlareList[i];
+   }
+}
+
+//--------------------------------------------------------------------------
+// Add Flare
+//--------------------------------------------------------------------------
+void LensFlare::addFlare( LFlare &flare )
+{
+   LFlare *newFlare = new LFlare;
+   *newFlare = flare;
+
+   mFlareList.push_back( newFlare );
+}
+
+//--------------------------------------------------------------------------
+// Render
+//--------------------------------------------------------------------------
+void LensFlare::render( const MatrixF &camTrans, const Point3F &lightPos )
+{
+
+   Point3F camPos = camTrans.getPosition();
+   Point3F camDir;
+   camTrans.getRow( 1, &camDir );
+
+
+   Point3F camAdjust = camPos + camDir;
+
+   Point3F lensFlareLine = lightPos - ( camAdjust );
+   lensFlareLine.normalize();
+
+   Point3F startPoint = camAdjust - lensFlareLine;
+   lensFlareLine *= 2.0;
+
+
+   for( int i=0; i<mFlareList.size(); i++ )
+   {
+      const LFlare *flare = mFlareList[i];
+      Point3F flarePos = startPoint + lensFlareLine * flare->offset;
+      renderFlare( flarePos, *flare );
+   }
+
+}
+
+//--------------------------------------------------------------------------
+// Render flare
+//--------------------------------------------------------------------------
+void LensFlare::renderFlare( Point3F &pos, const LFlare &flare )
+{
+
+   Point3F screenPoint;
+   if( !dglPointToScreen( pos, screenPoint ) )
+   {
+      return;
+   }
+
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glMatrixMode(GL_MODELVIEW);
+   glPushMatrix();
+
+   // set ortho mode
+   RectI viewport;
+   dglGetViewport(&viewport);
+   dglSetClipRect( viewport );
+
+   glColor4fv( flare.color );
+   glBindTexture(GL_TEXTURE_2D, flare.tex.getGLName());
+
+   dglDraw2DSquare( Point2F( screenPoint.x, screenPoint.y ), flare.size, 0 );
+
+
+   glMatrixMode(GL_MODELVIEW);
+   glPopMatrix();
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+}