Toxiclibs TriangleMesh question: how do I make the edges invisible

almost_sc..

Toxiclibs TriangleMesh question: how do I make the edges invisible

in Contributed Library Questions • 1 year ago

Hey All,

Quick question. I've got a triangleMesh built in Toxiclibs. I'm using P3D as the render mode. No matter what I try I can't get the edges of the mesh to disappear. I've tried calling noStroke() and setting the stroke color to be the same as the face color.

I've got some basic lighting in place:

shininess(1);

ambientLight(255, 255, 255);

directionalLight(255, 255, 255, 0, 1, 0);

Below is an image of what it looks like with the following code:

for (ExtrudedPolygon eFace : extrudedFaces) {
fill(255, 166, 0);
// stroke(255, 166, 0);
noStroke();
gfx.mesh(eFace.mesh);
noFill();
stroke(0);
}

Any advice for how to get rid of these lines?

Thanks!

Replies(6)

calsign

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

Does smooth() do anything?

almost_sc..

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

Thanks for the reply.

I am already calling smooth(), and no, it makes no difference.

amnon.owed

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

This has nothing to do with Toxiclibs or Trianglemesh, but the cause is the combination of P3D and smooth().

Using them together will cause internal lines to show. It's a bug in the P3D-renderer, this one?

Anyway, the solution is to either not use P3D (but OPENGL) or not use smooth().

This problem has 'solved' itself in Processing 2.0 since there no longer is a P3D renderer.

almost_sc..

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

Ammon.owed :

Thanks for the reply. Yeah, originally I was using OPENGL, however, I'm trying to get this to run as an applet and I ran into huge problems getting opengl applets to work (with processing 1.5 and 2.0). Now, I'm trying to rewrite the whole things using P3D so I can run it as an applet.

I just tried to run it without smooth() with P3D in 1.5 and, still, I get edge lines on the mesh ...

amnon.owed

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

When you use the P3D renderer on one of the examples from toxiclibs (for example toxiclibscore > mesh > SuperEllipsoidMeshBuilder) does this same problem show up?

Perhaps you could post a small runnable example that shows this problem?

almost_sc..

Re: Toxiclibs TriangleMesh question: how do I make the edges invisible

1 year ago

Hi All,

Thanks for the tips. When I tested an example I was able to reproduce my problem by calling smooth() (as suggested above). So I went back to my code and tried a few different things, and finally got something working. What I needed to do was explicitly call noSmooth() right before I drew the mesh. I was then able to call smooth again, after it was drawn. See the example below (in which I'm drawing offscreen):

G3.noSmooth();
G3.fill(orange);
G3.noStroke();
gfx.mesh(eFace.mesh);
G3.noFill();
G3.stroke(0);
G3.smooth();

Anyway, it's working now, and thanks for the tips that pointed me int the right direction!

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