From 6e447e02cd9a2680bea5bd2dfe1c77fe5ae8efc2 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@herge.(none)>
Date: Wed, 26 Jun 2013 11:36:06 +0100
Subject: poper fadeout

---
 06_performance/src/oni.cpp | 90 +++++++++++++++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 28 deletions(-)

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

diff --git a/06_performance/src/oni.cpp b/06_performance/src/oni.cpp
index 346adec..20b67bb 100644
--- a/06_performance/src/oni.cpp
+++ b/06_performance/src/oni.cpp
@@ -31,6 +31,8 @@ void syncOniPlayer::play(){
 		};
 		//sleep(2);
 		drawable=true;
+		startTime=ofGetElapsedTimef();
+		playerActive=true;
 	}
 }
 void syncOniPlayer::update(){
@@ -48,6 +50,10 @@ int syncOniPlayer::getCurrentFrame(){
 	if (players.size()) return players[0]->getCurrentFrame();
 	else return -1;
 }
+float syncOniPlayer::getPosition(){
+	if (players.size()) return players[0]->getPosition();
+	else return -1.0f;
+}
 void syncOniPlayer::drawWindows(){
 	if (!drawable) return;
 	for (int i=0;i<players.size();i++) {
@@ -96,8 +102,9 @@ void syncOniPlayer::drawCloud(int step){
 
     return;
 }
-void syncOniPlayer::drawPoints(float birth,float life,float dx,float dy, float dz,float size){
+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);
@@ -105,33 +112,55 @@ void syncOniPlayer::drawPoints(float birth,float life,float dx,float dy, float d
     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;
-	int dmw=players[0]->getWidth();
-	int dmh=players[0]->getHeight();
-	if (dmw&&dmh){
-        int step=pixels.getWidth()/dmw;
-        for (int o=0;o<birth;o++) {
-            int i=ofRandom(dmw);
-            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));
-            //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,
-            		LUT[pixels[((j*step*dmw)+(i*step))*3]],
-            		LUT[pixels[((j*step*dmw)+(i*step))*3]+1],
-            		LUT[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));
-			}
-        }
+
+	if (playerActive){
+		//apply envelope
+		float attackSeconds=2.0f;
+		float playOutFraction=0.9f;
+		float birth;
+		float clipTime=ofGetElapsedTimef()-startTime;
+		if (clipTime<attackSeconds) {
+			//ramp in
+			birth=_birth*(clipTime/attackSeconds);
+		}
+		else if (players[0]->getPosition()>playOutFraction) {
+			//cerr<<"playing out!"<<endl;
+			birth=_birth*(1.0f-((players[0]->getPosition()-playOutFraction)/(1.0f-playOutFraction)));
+			//if it reaches the end stop creating points but allow old points to play out
+			if (players[0]->getPosition()>0.99) playerActive=false;
+		}
+		else birth=_birth;
+
+		//cerr<<birth<<" "<<clipTime<<" "<<players[0]->getPosition()<<endl;
+    
+		const XnDepthPixel* depthmap=players[0]->getDepthGenerator().GetDepthMap();
+	    const ofPixels& pixels=players[0]->getImagePixels();
+	    int range=1700;
+		int dmw=players[0]->getWidth();
+		int dmh=players[0]->getHeight();
+		if (dmw&&dmh){
+	        int step=pixels.getWidth()/dmw;
+	        for (int o=0;o<birth;o++) {
+	            int i=ofRandom(dmw);
+	            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));
+	            //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,
+	            		LUT[pixels[((j*step*dmw)+(i*step))*3]],
+	            		LUT[pixels[((j*step*dmw)+(i*step))*3]+1],
+	            		LUT[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));
+				}
+	        }
+		}
 	}
 	for (int i=0;i<points.size();i++){
 	    if (!points[i].draw(life,dx,dy,dz,size)) {
@@ -155,6 +184,7 @@ void syncOniPlayer::stop(){
 		}
 	}
 	drawable=false;
+	playerActive=false;
 }
 //=================
 void oniManager::init(const char* filename){
@@ -217,4 +247,8 @@ void oniManager::drawPoints(float size,float birth,float life,float dx,float dy,
 	    players[playing].drawPoints(birth,life,dx,dy,dz,size);
 	}
 }
+syncOniPlayer* oniManager::getCurrentPlayer(){
+	if (players.size()>playing&&playing>-1) return &players[playing];
+	else return NULL;
+}
 
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