problems with P3D and OPENGL
in
Core Library Questions
•
6 months ago
I'm attempting to read a segment of video from a file in the data directory, store individual frames in an array and display these frames in a picture viewer that mimics Itunes coverflow. I've been able to load the array in a sequential fashion by reading and storing each frame as the sketch cycles through the draw() method. In fact, a previous iteration is able to display the frames, offsetting them on the x axis by ten. This iteration of the sketch doesn't want to display the images to the screen and I know it has something to do with how OPENGL or P3D renders the image to the screen.
I've used some of the code in this sketch which does exactly what I want to do but with a sequence of frames from a sample of a movie.
http://www.openprocessing.org/sketch/10451
This should work with any sample video. I've been using the infamous cat clip, and also another sample from a movie. here's the code:
import processing.video.*;
int maxImages = 35;
int router = 1;
int r=1;
Movie movie;
int ii = 0;
int iii = 0;
PImage[] gifs = new PImage[maxImages];
//these are all of the variables we need to run PhotoView
int imgCount = 35;
//int router = 1;
float imgX[] = new float[imgCount];
float imgY = 0;
float imgZ[] = new float[imgCount];
float imgWidth;
float imgHeight;
float Distance;
void setup()
{
frameRate(5);
size(1280, 900,P3D);
//size(900, 900,OPENGL);
setupImages();
movie = new Movie(this, "cat.mov");
movie.loop();
// imageMode(CENTER);
}
void setupImages() {
println("we are in setupImages");
imageMode(CENTER);
}
void calcImagePos(int i) {
imgX[i] = map(i, 0,7, 0, width);
Distance = dist(imgX[i], imgY, mouseX, mouseY);
imgZ[i] = -Distance;
imgWidth = 400;
imgHeight = imgWidth ;
}
void displayImages(int i) {
pushMatrix();
translate(imgX[i], height/2, imgZ[i]);
println(imgX[i]+" <--- imgX["+i+"] imgZ[i] -----> "+imgZ[i]+" i= "+i+" gifs[i]= "+gifs[i]);
popMatrix();
}
void draw() {
// background(0);
if (router ==1){
image(movie,100,100,height/5,width/5);
}
if (router == 2){
movie.stop();
for (int x = 4; x<maxImages-3;x++){
println("should spread them right here "+ x);
image(gifs[x], x*5, 0, imgWidth/2, imgHeight/2);
}
router = 3;
}
println("router= "+ router);
if (router == 3){
println("setting up images");
router = 4;
println("router = "+router);
background(0);
}
if (router == 4){
// background(0);
for(int i = 3; i < maxImages-2; i++){
calcImagePos(i);
displayImages(i);
image(gifs[i], 500,500, imgWidth/2, imgHeight/2);
}
}
}
void movieEvent(Movie m){
m.read();
if (ii > maxImages-3)
{
println("The movie has stopped.");
router = 2;
println("router (in movieEvent) = "+router);
}
ii=frameCount;
println("FRAMECOUNT= "+frameCount);
println("load gifs[]");
gifs[ii]=m.get(30,30,m.width,m.height);
// image(gifs[ii],0,0);
r=ii;
if (r>1){
r = int (random(0,ii));
println("THE VALUE OF R= "+ r);
if (gifs[r] == null)
{
//checks to see whether the value is null before attempting to print to screen
println(r+ "<---index for gifs with the value for r = null");
}
else{
println("should print to screen right here");
image(gifs[r],0,300); //why isn't this being displayed on the screen?
}
}
}
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