Hello, When two objects have a common border and, then one is selected, the wrong one is highlighted. I have to draw the quadrilaterals with line segments because diagonals are not allowed (curious can wireframe quads be drawn using triangles and not have the diagonal appear?). I notice the problem…

[image] aitheorem: curious can wireframe quads be drawn using triangles and not have the diagonal appear? Did you see that? [image] GridBoxGeometry Resources This question was asked many times on SO, but there hasn’t been any appropriate and simple solution so far. …

I appreciate the response and I did a cursory review of the information that you provided. The thing is that my input contains a set of x,y, and z coordinates from which I have to generate a geometric shape. In some cases, the geometric shapes are adjacent to each other in some instances the geometr…

[image] aitheorem: One observation that I made is that when I click on the interior of the quadrilaterals, the ray that cast is always at one of the edges and not at the location that was clicked on. Why is this? Maybe this can help? (Note! From r95 raycast multi-material is supported correc…

I tried upgrading to the latest version of threejs; however, that did not resolve the issue. I looked at the source code of your examples, but I didn’t see any difference in the usage of raycaster. I thought that when the statement: “raycaster.setFromCamera( mouse, camera );” was executed that the…

One thing I didn’t try is something that has a multi-material. I’m not entirely sure what that is. Are you talking about something being created like this? “var mesh = THREE.SceneUtils.createMultiMaterialObject(geometry,[meshMaterial,wireframeMaterial]);” I didn’t see a statement like that in your…

Until r84, one had to define a multi-material of individual materials separately. Now an array containing the materials is sufficient: https://github.com/mrdoob/three.js/wiki/Migration-Guide r84 → r85 In the example http://sandboxthreef.threejs.hofk.de/modifyRaycastMultiMaterial.html the triangl…

I appreciate the quick response. :smile: I will review the information that you have provided.

I appreciate your help! Thank you :slight_smile:

@hofk asked me to detail the solution to the problem that I had. Some of the conversations took place on a separate thread, I have posted that conversation below. @hofk suggested that I create an invisible area. So I draw the rectangle with line segments and then overlay them with invisible triang…

Ray casting to objects with a common border

Questions

hofk August 16, 2018, 3:27pm 2

Did you see that?

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Ray casting to objects with a common border

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