View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0033349 | Community | OCCT:Visualization | public | 2023-03-22 19:25 | 2024-01-12 21:54 |
| Reporter | PawelK | Assigned To | sshutina | ||
| Priority | normal | Severity | minor | ||
| Status | new | Resolution | open | ||
| Platform | Windows | OS | VC++ 2017 | ||
| Product Version | 7.6.3 | ||||
| Target Version | Unscheduled | ||||
| Summary | 0033349: Visualization - Path tracing producing awkward artifacts | ||||
| Description | I have defined a scene and use it to render images using path tracing with OCCT770. The components of the scene are: - a CAD modell (stud) - light source (V3d_PositionalLight) - a grid that is placed in front of the light source (stripes) - a camera The generated stripes do not seem to be right and obviously depend on the angle between the light and the face normal (see attached image). Looks like accumulated error of single precision floating point math. As larger distance of the light - the harder effect. https://dev.opencascade.org/content/path-tracing-producing-awkward-artifacts | ||||
| Steps To Reproduce |
pload MODELING VISUALIZATION
vinit View1
vclear
vraytrace 1
vrenderparams -shadows 1
vlight redlight -type POSITIONAL -headlight 0 -pos 25 0 200 -color RED -intensity 10 -display
pcylinder c0 50 5
pcylinder c1 25 50
vdisplay c0 c1 -dispMode 1
vaspects c0 c1 -material plastic -color white
vfit
box b1 0 -0.5 -200 1 1 400
box b2 0 -1.5 -200 1 -1 400
box b3 0 1.5 -200 1 1 400
vdisplay b1 b2 b3 -dispMode 1
proc testdist {d} {
vlocation b1 -setLocation $d 0 0
vlocation b2 -setLocation $d 0 0
vlocation b3 -setLocation $d 0 0
vlight redlight -pos [expr 25+$d] 0 200
}
testdist 100
#testdist 1000
| ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2023-03-22 19:25 | PawelK | New Issue | |
| 2023-03-22 19:25 | PawelK | Assigned To | => sshutina |
| 2023-03-22 22:33 | dpasukhi | Target Version | => Unscheduled |
| 2023-03-22 22:33 | dpasukhi | Summary | Path tracing producing awkward artifacts => Visualization - Path tracing producing awkward artifacts |
| 2023-03-22 22:33 | dpasukhi | Steps to Reproduce Updated | |
| 2023-03-23 15:46 | PawelK | Note Added: 0113318 | |
| 2023-03-23 15:46 | PawelK | File Added: draw3.PNG | |
| 2023-03-23 15:47 | PawelK | Note Added: 0113319 | |
| 2023-03-23 15:47 | PawelK | File Added: draw2.PNG | |
| 2023-03-23 15:47 | PawelK | File Added: Cylinder.PNG | |
| 2023-03-23 15:47 | PawelK | File Added: Cylinder_orthographic.PNG |
