encima / encima/jsc3d

Depth passed to onmousedown is always -Infinity

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auto-migrated Priority-Medium Type-Defect
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HTML
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Description

What steps will reproduce the problem?

viewer.onmousedown = function(x, y, button, depth, mesh) {
    if (button == 0/* left button down */&& mesh != null) {
        console.log("POKE: " + x + "," + y + "," + depth);
    }
};


What is the expected output? What do you see instead?
Some sort of value for the z-index.  -Infinity

What version of the product are you using? On what operating system?
1.6.5

The model I'm using is a wavefront .obj file if that is of any help.

Original issue reported on code.google.com by ryan.s...@gmail.com on 8 Dec 2014 at 4:48

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  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the viewer.onmousedown callback path and reproduce the report using the supplied handler and a Wavefront .obj model on version 1.6.5. Trace how depth is calculated and passed to the callback; done means the callback receives a finite depth value instead of -Infinity.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
computer-graphics
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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