Basic 3d texture question

in Programming Questions • 1 year ago

All I'm doing is calling this class's draw + update in an arraylist. The original PNG is a circle but for some reason it's being warped here as you can see. Anyone know how I can fix this? This is my first 3d project. Thanks!

class Particle
{
PVector d_pos;
PImage d_img;
int d_size;
float d_fade;
Particle( float x, float y, float z)
{
d_pos = new PVector( x, y , z);
d_img = loadImage( "ring1.png" );
d_size = d_img.width;
d_fade = 255;
d_size = 100;
}
void draw()
{
tint( 255, 150, 255, d_fade );
noStroke();
// image(d_img, d_pos.x - d_size/2, d_pos.y - d_size/2, d_pos.z );
pushMatrix();
translate(width / 2, height / 2);
rotateX(PI/3);
beginShape();
texture(d_img);
vertex(-d_size, -d_size, d_pos.z, 0, 0);
vertex(d_size, -d_size, d_pos.z, 300, 0);
vertex(d_size, d_size, d_pos.z, 300, 300);
vertex(-d_size, d_size, d_pos.z, 0, 300);
endShape();
popMatrix();
}
boolean update()
{
d_fade *= .98;
d_pos.z+=2;
if( floor( d_fade ) != 0 )
return true;
return false;
}
}

Replies(6)

furinax

Re: Basic 3d texture question

1 year ago

bump!

tfguy44

Re: Basic 3d texture question

1 year ago

You might have more luck if you post a copy of ring1.png - that way we can actually try running your code to see what it does and maybe debug it for you. Posting code that can't be easily run doesn't usually get people to help you with it.

furinax

Re: Basic 3d texture question

1 year ago

Okay, here is the driver class and I'm attaching ring1.png... it's invisible because it's white. But right click between the two brackets below and have faith. Combine this code with the code above and put the png in the data folder and it should work.

ArrayList ps;
PVector c;
int k = 0;
void setup() {
size(800, 600, P3D);
ps = new ArrayList();
c = new PVector( width/2, height/2, -200 );
}
void draw() {
background(0);
if( k++ % 20 == 0 )
ps.add(new Particle( c.x, c.y, c.z ));
for( int i = 0 ; i < ps.size() ; ++i )
{
((Particle)ps.get(i)).draw();
if( !((Particle) ps.get(i)).update() )
ps.remove(i);
}
}

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toxmeister

Re: Basic 3d texture question

1 year ago

P3D doesn't render textures perspectively corrected, but only uses linear interpolation. Switch to OPENGL as renderer and the effect should disappear...

http://postspectacular.com | http://toxiclibs.org

furinax