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Flat rendering on PGraphics3D of PShapes created from PGraphics2D #833
Description
Calling createShape() directly will use the Applet renderer.
If this renderer is set to be of type P2D, the resulting shape seems to ignore any z value set to it's vertices.
I'm guessing that this shape contains some optimizations aimed at 2D rendering.
There should be a warning when using this kind of "flat" PShape on a P3D renderer.
Maybe even a different PShape class to make it foolproof.
Also, it would be great if 3D PShapes could be created without needing to reference a PGraphics3D that is in the "draw state".
Here's a piece of code to replicate the issue:
PGraphics g3D;
PShape shape;
void setup()
{
size(800, 600, P2D);
g3D = createGraphics(width, height, P3D);
//g3D.beginDraw(); // uncomment to fix flatness
shape = createShape(); // change to g3D.createShape(); to fix flatness
//g3D.endDraw(); // uncomment to fix flatness
shape.beginShape(LINE_STRIP);
shape.vertex(0, 0, 0);
shape.vertex(200, 0, 0);
shape.vertex(200, 0, 200);
shape.endShape(CLOSE);
}
void draw()
{
g3D.beginDraw();
g3D.background(255);
g3D.translate(width / 2, height / 3, 0);
g3D.rotateY(((frameCount % 400) / 400.0f) * TWO_PI);
g3D.shape(shape);
g3D.endDraw();
image(g3D, 0, 0, width, height);
}
- Processing version: 4.2
- Operating System and OS version: Windows 10
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