From ff979a86dc8f031c823cd8806324b0e8c4ca069b Mon Sep 17 00:00:00 2001
From: Comment <tim@gray.(none)>
Date: Mon, 24 Jun 2013 13:41:50 +0100
Subject: particle scaling

---
 06_performance/src/oni.cpp | 46 ++++++++++++++++++++++++++--------------------
 1 file changed, 26 insertions(+), 20 deletions(-)

(limited to '06_performance/src/oni.cpp')

diff --git a/06_performance/src/oni.cpp b/06_performance/src/oni.cpp
index 024594f..3f028fc 100644
--- a/06_performance/src/oni.cpp
+++ b/06_performance/src/oni.cpp
@@ -96,8 +96,15 @@ void syncOniPlayer::drawCloud(int step){
 
     return;
 }
-void syncOniPlayer::drawPoints(float birth,float life,float dx,float dy, float dz){
+void syncOniPlayer::drawPoints(float birth,float life,float dx,float dy, float dz,float size){
 	if (!drawable) return;
+	glEnable(GL_PROGRAM_POINT_SIZE);
+    glEnable(GL_POINT_SMOOTH);
+    glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
+    glEnable( GL_BLEND );
+    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+    //glPointSize( size);
+    glBegin(GL_POINTS);
 	const XnDepthPixel* depthmap=players[0]->getDepthGenerator().GetDepthMap();
     const ofPixels& pixels=players[0]->getImagePixels();
     int range=1700;
@@ -110,21 +117,29 @@ void syncOniPlayer::drawPoints(float birth,float life,float dx,float dy, float d
             int j=ofRandom(dmh);
             ofPoint p= players[0]->projectiveToWorld(ofPoint(i,j,(float)depthmap[j*dmw+i]));
             if (p.z <100 || p.z>range) continue;
-            points.push_back(fpoint(p.x, p.y, p.z,pixels[((j*step*dmw)+(i*step))*3],pixels[((j*step*dmw)+(i*step))*3]+1,pixels[((j*step*dmw)+(i*step))*3]+2));
+            //points.push_back(fpoint(p.x, p.y, p.z,pixels[((j*step*dmw)+(i*step))*3],pixels[((j*step*dmw)+(i*step))*3]+1,pixels[((j*step*dmw)+(i*step))*3]+2));
             //fpoint f=fpoint(p.x, p.y, p.z,pixels[((j*step*dmw)+(i*step))*3],pixels[((j*step*dmw)+(i*step))*3]+1,pixels[((j*step*dmw)+(i*step))*3]+2);
             //f.draw(life,dx,dy,dz);
+            if (pointPool.size()) {//take 1st dead particle
+            	points[(*pointPool.begin())].setup(p.x, p.y, p.z,pixels[((j*step*dmw)+(i*step))*3],pixels[((j*step*dmw)+(i*step))*3]+1,pixels[((j*step*dmw)+(i*step))*3]+2);
+            	pointPool.erase(pointPool.begin());
+            }
+			else {//make a new one
+				points.push_back(fpoint(p.x, p.y, p.z,pixels[((j*step*dmw)+(i*step))*3],pixels[((j*step*dmw)+(i*step))*3]+1,pixels[((j*step*dmw)+(i*step))*3]+2));
+			}
         }
 	}
-	std::list<fpoint>::iterator i = points.begin();
-	while (i != points.end())
-	{
-	    if (i->draw(life,dx,dy,dz)) i = points.erase(i);
-	    else ++i;
-	    ++i;
+	for (int i=0;i<points.size();i++){
+	    if (!points[i].draw(life,dx,dy,dz,size)) {
+	    	pointPool.insert(i);
+	    }
 	}
+	glEnd();
+    glDisable( GL_BLEND );
+    glDisable(GL_PROGRAM_POINT_SIZE);
 }
 int syncOniPlayer::getNumParticles(){
-	return points.size();
+	return points.size()-pointPool.size();
 }
 void syncOniPlayer::stop(){
 	soundplayer.stop();
@@ -195,16 +210,7 @@ int oniManager::getNumParticles(){
 }
 void oniManager::drawPoints(float size,float birth,float life,float dx,float dy, float dz){
 	if (players.size()>playing&&playing>-1) {
-		glEnable(GL_PROGRAM_POINT_SIZE);
-	    glEnable(GL_POINT_SMOOTH);
-	    glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
-	    glEnable( GL_BLEND );
-	    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
-	    glPointSize( size);
-	    glBegin(GL_POINTS);
-	    players[playing].drawPoints(birth,life,dx,dy,dz);
-	    glEnd();
-	    glDisable( GL_BLEND );
-	    glDisable(GL_PROGRAM_POINT_SIZE);
+	    players[playing].drawPoints(birth,life,dx,dy,dz,size);
 	}
 }
+
-- 
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