texture() and vertex() error

Programming Questions

eliquious

in Programming Questions • 3 years ago

Hi all,

Getting this error: "You must first call texture() before using u and v coordinates with vertex()".

I'm calling it in the correct order as seen in example after example. I've looked at the old post here. I've verified all the suggestions in the old forum as correct.

Does anyone have any new suggestions for fixing this issue? Is it a PImage problem? This is driving me crazy...

Thanks,

Max

edit:

sorry i guess i should have done this first... I'm using OPENGL. The image is fairly large - 646KB and takes a second to load. I'm not getting the "can't find image" error either.

PImage texmap;

void setup(){

...

texmap = loadImage("srtm_ramp2.world.5400x2700.jpg");

...

}

...

void drawPlane() {

noStroke();

noFill();

textureMode(NORMALIZED);

beginShape();

texture(texmap);

vertex(-xdim/2, -ydim/2,0,0,0);

vertex(xdim/2, -ydim/2,0,5400,0);

vertex(xdim/2, ydim/2,0,2700, 5400);

vertex(-xdim/2, ydim/2,0, 0,2700);

endShape(CLOSE);

}

It's a fairly large sketch so I don't want to post the whole thing.

Replies(3)

bjordal

Re: texture() and vertex() error

3 years ago

post code, also what renderer are you using?

kooogy

Re: texture() and vertex() error

3 years ago

i've had that error before in code that looked fine and had the necessary texture() call right before using the u and v.

turns out the image wasn't loading correctly, so check that too. try just printing it to screen as an image, not as part of a texture.

but, yes, post code.

duncancs2..

Re: texture() and vertex() error

1 year ago

I just solved this same problem recently.

After copying the Processing program from one computer to another, the PImage wouldn't display (as an image or a texture).

I had to use the ADD FILE option from SKETCH folder before it would work (even though the JPG file was already in the sketch's data folder).

Hope this helps.

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