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There is something wrong in this statement, at least in the context of the article. Cold someone clarify in more detail in mind? Also, if these operations are different (which I strongly doubt) then both should be described.
<< Some software distinguishes the Union from a different operator, Merge, which does the union in such a way that the surfaces inside the merged region are not rendered. This would be desirable in cases where the objects are transparent, and the union should be treated as a single solid object. In particular, the POV-Ray graphics package implements this concept. >>
Mikkalai 02:45, 4 Jan 2004 (UTC)
POV-Ray is able to render transparent objects with non-zero refraction angles. The use of it's CSG union operator for such object has unexpected results sence the "interior serfaces" within the union will cause a second refeaction. The operation is significantly faster however so it has remained. a Merge operator eleminates these interior refractions at the cost of render speed.
-- Jfmiller28 01:16, 26 July 2006 (UTC)
The last paragraph says that Quake uses CSG in its engine. I very much doubt it. -- 81.57.79.249 09:36, 2 August 2005 (UTC)
I want to add a section about how CSG is implemented, especially in raytracers. Like this:
A way raytracers implement constructive solid geometry is by sending a ray through both objects that are being operated on, and depending on the operator, the closest intersection point is decided.
Intersection: Object 1's intersections with ray: ------- Object 2's intersections with ray: ------ Intersection: --- Ray's closest intersection: ^ Subtraction: Object's intersections with ray: ------- Subtraction area's intersections with ray: ------ Subtraction: --- Ray's closest intersection: ^
This is the best way I can think of to explain it. ForrestVoight 17:12, 13 October 2006 (UTC)
It seems to me Aqsis (a RenderMan Renderer) support CSG. Should I add it in the list at the bottom of the page ? -- Hibou57 ( talk) 23:53, 31 October 2011 (UTC)
![]() | This article is rated Start-class on Wikipedia's
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There is something wrong in this statement, at least in the context of the article. Cold someone clarify in more detail in mind? Also, if these operations are different (which I strongly doubt) then both should be described.
<< Some software distinguishes the Union from a different operator, Merge, which does the union in such a way that the surfaces inside the merged region are not rendered. This would be desirable in cases where the objects are transparent, and the union should be treated as a single solid object. In particular, the POV-Ray graphics package implements this concept. >>
Mikkalai 02:45, 4 Jan 2004 (UTC)
POV-Ray is able to render transparent objects with non-zero refraction angles. The use of it's CSG union operator for such object has unexpected results sence the "interior serfaces" within the union will cause a second refeaction. The operation is significantly faster however so it has remained. a Merge operator eleminates these interior refractions at the cost of render speed.
-- Jfmiller28 01:16, 26 July 2006 (UTC)
The last paragraph says that Quake uses CSG in its engine. I very much doubt it. -- 81.57.79.249 09:36, 2 August 2005 (UTC)
I want to add a section about how CSG is implemented, especially in raytracers. Like this:
A way raytracers implement constructive solid geometry is by sending a ray through both objects that are being operated on, and depending on the operator, the closest intersection point is decided.
Intersection: Object 1's intersections with ray: ------- Object 2's intersections with ray: ------ Intersection: --- Ray's closest intersection: ^ Subtraction: Object's intersections with ray: ------- Subtraction area's intersections with ray: ------ Subtraction: --- Ray's closest intersection: ^
This is the best way I can think of to explain it. ForrestVoight 17:12, 13 October 2006 (UTC)
It seems to me Aqsis (a RenderMan Renderer) support CSG. Should I add it in the list at the bottom of the page ? -- Hibou57 ( talk) 23:53, 31 October 2011 (UTC)