Editing NURBS TODO
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− | = | + | = Optimize BREP/NURBS ray tracing= |
− | * Benefit: | + | * Benefit: faster ray tracing runtime |
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* References: | * References: | ||
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** src/librt/primitives/brep | ** src/librt/primitives/brep | ||
** src/librt/opennurbs_ext.* | ** src/librt/opennurbs_ext.* | ||
= Optimize BREP/NURBS prep= | = Optimize BREP/NURBS prep= | ||
− | + | * Benefit: faster ray tracing runtime, user requested. | |
− | * Benefit: faster ray tracing | ||
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** src/librt/primitives/brep/brep.cpp:rt_brep_prep() | ** src/librt/primitives/brep/brep.cpp:rt_brep_prep() | ||
** src/librt/opennurbs_ext.* | ** src/librt/opennurbs_ext.* | ||
− | = | + | =Implicit-to-NURBS= |
− | Implement | + | Implement conversion of implicit primitives to BREP/NURBS primitives. Partially complete, primitives are fixed at origin, some primitives unimplemented. |
− | * Benefit: partial requirement for interactive visualization of implicit CSG geometry in OpenGL | + | * Benefit: partial requirement for interactive visualization of implicit CSG geometry in OpenGL. |
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− | = BREP/NURBS-to-NMG= | + | =BREP/NURBS-to-NMG= |
Implement conversion of BREP/NURBS to NMG. | Implement conversion of BREP/NURBS to NMG. | ||
− | * Benefit: requirement for | + | * Benefit: partial requirement for export and interactive visualization of BREP/NURBS in OpenGL. |
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− | = | + | =BSPLINE/NURBS review= |
Identify useful concepts implemented in the old BSPLINE/NURBS code that are not present in openNURBS. | Identify useful concepts implemented in the old BSPLINE/NURBS code that are not present in openNURBS. | ||
* Benefit: code reuse, potentially very useful functionality. | * Benefit: code reuse, potentially very useful functionality. | ||
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− | = BSPLINE/NURBS reuse= | + | =BSPLINE/NURBS reuse= |
Port any useful BSPLINE/NURBS code to openNURBS data structures and routines. | Port any useful BSPLINE/NURBS code to openNURBS data structures and routines. | ||
* Benefit: code reduction, allows the old BSPLINE/NURBS code to be removed after functionality is migrated. | * Benefit: code reduction, allows the old BSPLINE/NURBS code to be removed after functionality is migrated. | ||
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=BREP/NURBS CSG evaluation= | =BREP/NURBS CSG evaluation= | ||
Implement boolean evaluation of BREP/NURBS surfaces. | Implement boolean evaluation of BREP/NURBS surfaces. | ||
* Benefit: partial requirement for interactive visualization of BREP/NURBS in OpenGL. | * Benefit: partial requirement for interactive visualization of BREP/NURBS in OpenGL. | ||
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− | + | =Plate-mode BREP/NURBS= | |
− | + | Implement plate mode BREP/NURBS objects. Similar, if not identical, to plate mode BoTs, 'brep' objects need the ability to have a thickness described so you could automatically handle non-solid NURBS and sheet-metal style geometry without requiring surface solidity. | |
− | + | * Benefit: allows for import and visualization of BREP/NURBS surfaces that are not solid. | |
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=Implicit CSG to BREP/NURBS CSG test scripts= | =Implicit CSG to BREP/NURBS CSG test scripts= | ||
Develop test scripts for comparing conversion of implicit CSG to BREP/NURBS CSG | Develop test scripts for comparing conversion of implicit CSG to BREP/NURBS CSG | ||
* Benefit: provides validation and verification via ray tracing. | * Benefit: provides validation and verification via ray tracing. | ||
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=BREP/NURBS documentation= | =BREP/NURBS documentation= | ||
− | Document the new BREP/NURBS primitive | + | Document the new BREP/NURBS primitive. |
− | * Benefit: provides user documentation explaining capabilities, limitations, and benefits | + | * Benefit: provides user documentation explaining capabilities, limitations, and benefits. |
− | * | + | |
− | * | + | =Cache objects= |
− | + | Implement data cache objects. Create new LIBRT API routines for storing cache data in a v5 container. This would amount to storing binary data into a 'binunif' object marked as hidden with attributes for date/time stamping and MD5 or SHA256 checksumming. | |
+ | * Benefit: faster ray tracing runtime, applicable to other primitives (NMG, BoT). | ||
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+ | =Cache prep results= | ||
+ | Cache BREP/NURBS prep results to a specified cache file. | ||
+ | * Benefit: faster ray tracing runtime for BREP/NURBS, user requested. | ||
=BREP/NURBS wireframe= | =BREP/NURBS wireframe= | ||
Improve BREP/NURBS wireframe. Investigate using knots on subcurves. | Improve BREP/NURBS wireframe. Investigate using knots on subcurves. | ||
− | * Benefit: faster wireframe | + | * Benefit: faster wireframe, more detailed close wireframes. |
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= BREP/NURBS source code cleanup= | = BREP/NURBS source code cleanup= | ||
Consolidate Owens and Reeves approaches to ray intersection. | Consolidate Owens and Reeves approaches to ray intersection. | ||
− | * Benefit: improved code maintainability | + | * Benefit: improved code maintainability. |
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= BREP/NURBS healing= | = BREP/NURBS healing= | ||
Implement an rt_heal(rt_db_internal *dbi); routine. The routine tightens up trimming curves and edge/vertex pairings so that they align perfectly while still preserving the topological structure. | Implement an rt_heal(rt_db_internal *dbi); routine. The routine tightens up trimming curves and edge/vertex pairings so that they align perfectly while still preserving the topological structure. | ||
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− | + | = BREP/NURBS for analysis purpose report= | |
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− | + | = Analytic comparison of BREP/NURBS and BoT= | |
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+ | = Analytic comparison of BREP/NURBS CSG and implicit CSG= |