From d63937d54f41aa94236be6d7da3eede9b07196c7 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Wed, 19 Feb 2014 13:03:32 +0000
Subject: preparing mip maps

---
 offsetProject/src/ofApp.cpp | 48 +++++++++++++++++++++++----------------------
 offsetProject/src/ofApp.h   |  2 +-
 2 files changed, 26 insertions(+), 24 deletions(-)

diff --git a/offsetProject/src/ofApp.cpp b/offsetProject/src/ofApp.cpp
index 1c61832..3399aca 100644
--- a/offsetProject/src/ofApp.cpp
+++ b/offsetProject/src/ofApp.cpp
@@ -36,7 +36,6 @@ void ofApp::setup() {
 	angle = 0;
 	kinect.setCameraTiltAngle(angle);
 
-		//how to draw a pyramid mosaic
 	//start with the largest size square
 	//get the depth, if below a certain size, subdivide and repeat
 
@@ -45,23 +44,29 @@ void ofApp::setup() {
 	//1 - create a pyramid of mip maps of depth
 	//2 - work upwards
 
-	int min_w=ceil(kinect.width/(MAX_TILE_SIZE*2))*2;
-	int min_h=ceil(kinect.height/(MAX_TILE_SIZE*2))*2;
+	//a find layout of largest tiles
+	//b extend captured frame to this ratio
+	//c mip map this down into prepared containers
+
+	int tiles_w=ceil(kinect.width/(MAX_TILE_SIZE*2))*2;
+	int tiles_h=ceil(kinect.height/(MAX_TILE_SIZE*2))*2;
+	extend_w=(tiles_w)*MAX_TILE_SIZE;
+	extend_h=(tiles_h)*MAX_TILE_SIZE;
 
 	//get number of levels
 	int levels=0;
-	for (int i=MIN_TILE_SIZE;i>=MAX_TILE_SIZE;i*=2) {
+	for (int i=MIN_TILE_SIZE;i<=MAX_TILE_SIZE;i*=2) {
 		levels++;
-		int w=ceil(kinect.width/(i*2))*2;
-		int h=ceil(kinect.height/(i*2))*2;
-		numTiles.push_back(make_pair(w,h));
-		cerr<<"level "<<levels<<" mipmap: "<<w<<"x"<<h<<endl;
 	}
 
-	numTiles.resiz
-
 	colourTiles.resize(levels);
 	depthTiles.resize(levels);
+
+	for (int i=MIN_TILE_SIZE,l=0;i<=MAX_TILE_SIZE;i*=2,l++) {
+		colourTiles[l].allocate(extend_w/i,extend_h/i);
+		depthTiles[l].allocate(extend_w/i,extend_h/i);
+		cerr<<"level "<<levels<<" mipmap: "<<colourTiles[l].getWidth()<<"x"<<colourTiles[l].getHeight()<<endl;
+	}
 	
 }
 
@@ -80,7 +85,8 @@ void ofApp::update() {
 		
 		depthImage.threshold(farThreshold);
 
-		depthImage.extend()
+		depthImage.extend(extend_w,extend_h);
+		colourImage.extend(extend_w,extend_h);
 		
 		// mark pixels and texture dirty
 		depthImage.flagImageChanged();
@@ -89,18 +95,14 @@ void ofApp::update() {
 		ofxCvColorImage *prevCol=&colourImage;
 		ofxCvGrayscaleImage *prevDepth=&depthImage;
 
-		for (int i=MIN_TILE_SIZE,l=0;i>=MAX_TILE_SIZE;i*=2,l++){
-			colourTiles[l].allocate(numTiles[l].first,numTiles[l].second);
-			colourTiles[l].scaleIntoMe(*prevCol);
-			depthTiles[l].allocate(numTiles[l].first,numTiles[l].second);
-			depthTiles[l].scaleIntoMe(*prevDepth);
-			//extend borders to a whole number of tiles of the next size
-			if (l<colourTiles.size()-1){
-				colourTiles[l].extend(numTiles[l+1].first*2,numTiles[l+1].second*2);
-				depthTiles[l].extend(numTiles[l+1].first*2,numTiles[l+1].second*2);
-			}
-			prevCol=&colourTiles[l];
-			prevDepth=&depthTiles[l];
+		for (int i=0;i<colourTiles.size();i++){
+			colourTiles[i].scaleIntoMe(*prevCol);
+			depthTiles[i].scaleIntoMe(*prevDepth);
+			prevCol=&colourTiles[i];
+			prevDepth=&depthTiles[i];
+
+			colourTiles[i].flagImageChanged();
+			depthTiles[i].flagImageChanged();
 		}
 	}
 }
diff --git a/offsetProject/src/ofApp.h b/offsetProject/src/ofApp.h
index 57ee0d0..ce00cc8 100644
--- a/offsetProject/src/ofApp.h
+++ b/offsetProject/src/ofApp.h
@@ -47,5 +47,5 @@ public:
 	int farThreshold;	
 	int angle;
 
-	
+	int extend_w,extend_h;
 };
-- 
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