Polygons in Immediate Drawing are only 2D

timbrando

4 years ago
updated 4 years ago
Not a bug

^Hey,

^{I wanted to draw a polygon that is always in front of the camera in the Immediate-Drawing mode. I created a PolygonPath and added my Vector3 points to this list. But after calling the Draw.Polygon(PolygonPath pgp, ...) method in the OnPostRender method the polygon appeared always in the z plane.}

^{In fact, after diving into the source code of Shapes, I found in "PolygonPath.cs" that it has a List<Vector2> and that's probably why it's always at z=0. Would be great if I could also add Vector3 to the PolygonPath!}

^{Thanks in advance for a fix!}

^Tim

Reporting a bug? please specify Unity version:

2020.1.6f1

Reporting a bug? please specify Shapes version:

2.3.1

Reporting a bug? please specify Render Pipeline:

Pinned replies

Freya Holmér creator

4 years ago
Answer
Not a bug

Polygons are by design only 2D, because triangulation is ambiguous and undefined unless the vertices lie in a single plane

However! you can still set the position and rotation and all that of the polygon by using the Draw matrix

Draw.Matrix = Matrix4x4.TRS( position, rotation, scale );
Draw.Polygon( path, ... );
Draw.Matrix = Matrix4x4.identity;

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4 years ago

Hi Freya,

thanks for your reply. I will try that out as soon as I can! :)

Tim