have z as y (URGENT!)

Programming Questions

clankill3r

in Programming Questions • 2 years ago

Hi,

i'm used to that if a object falls that it's Z value gets lower instand of Y.
To do this it should be possible with:
camera(width/2.0, height/2.0, (height/2.0) / tan(PI*60.0 / 360.0), width/2.0, height/2.0, 0, 0, 1, 0);

above is default, if i change it to:
camera(width/2.0, height/2.0, (height/2.0) / tan(PI*60.0 / 360.0), width/2.0, height/2.0, 0, 0, , 1);

then i don't see anything.

please help, i don't have internet at home and i need to make something fast

Replies(2)

clankill3r

Re: have z as y (URGENT!)

2 years ago

here was another attempt, it is close since i can see the object now, but not correct

import processing.opengl.*;

void setup() {
size(1024, 768, OPENGL);
}

void draw() {
background(255);

camera(width/2.0, (height/2.0) / tan(PI*60.0 / 360.0), height/2.0, height/2.0, width/2.0, 0, 0, 0, 1);

pushMatrix();
translate(width/2, height/2);

//rotateY(map(mouseX, 0, height, 0, TWO_PI));
rotateX(map(mouseY, 0, height, 0, TWO_PI));

for (int x = 0; x < 10; x ++) {
    for (int y = 0; y < 10; y++) {
      pushMatrix();
      translate(x*20, y*20);
      box(5);
      popMatrix();
    }
}

popMatrix();

}

quarks

Re: have z as y (URGENT!)

2 years ago

The camera default view is looking down the z axis and in your second statement (in your first post) you are changing the camera up axis from the y to the z axis. Now if the lookat direction is the same as the camera up axis then OpenGL will not display anything which explains why you see nothing.

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have z as y (URGENT!)

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Re: have z as y (URGENT!)

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