armory3d / armory3d/armory

Particles - fix emission from faces / verts

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bug
Dominant language
C++
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Description

Is it possible to realize the work of particles (hair) not through volume, but in other ways?
When the "volume" of a particle is distributed along a rectangle, even if the shape of the parent is complex.

![screenshot at 18-03-02](https://user-images.githubusercontent.com/32273833/45255656-fa896580-b389-11e8-8e82-6218a3baea3c.png)

Similarly, when the particles are activated on the GPU, the particles flicker or even fail under the parent. I did not find Particles on the GPU in the material configuration, although it was previously.

![screenshot at 18-08-20](https://user-images.githubusercontent.com/32273833/45255660-0f65f900-b38a-11e8-8527-0cc9aa1a6146.png)

blendfile
[04-test2-trava.zip](https://github.com/armory3d/armory/files/2363425/04-test2-trava.zip)

Thank you for your work!

Contributor guide

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Research direction

Start by opening the attached 04-test2-trava.zip blendfile and reproducing the particle behavior for face or vertex emission and GPU particles. Compare the distribution and flickering or missing-particle cases; done means particles emit correctly from the requested geometry and remain stable when GPU particles are enabled.

Written by the indexing model from the issue text.

Assessment

Tech stack
blender, cpp
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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