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Minor improvements to the introductory documentation:

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- fixed a broken HTML link
    - added emphasis that Loop meshes must be purely triangular
    - removed a note listing pre-3.4 restrictions on Loop functionality
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barry 2019-06-26 09:07:32 -07:00
parent 9b02dbf9bf
commit 456c942835
1 changed files with 7 additions and 10 deletions
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17
documentation/subdivision_surfaces.rst
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@ -305,8 +305,8 @@ An arbitrary polygonal mesh will often not make a good subdivision cage, regardl
of how good that polygonal mesh appears.
As with rectangular piecewise parametric surfaces, the cage should be shaped to
affect the underlying surface it is intended to represent. See <Modeling Tips> for
related recommendations.
affect the underlying surface it is intended to represent. See
`Modeling Tips <mod_notes.html>`__ for related recommendations.
----
@ -401,7 +401,7 @@ provides simple rules and a reasonable limit surface in most cases.
As with the case of regular versus irregular features, since every face has a
corresponding piece of surface associated with it -- whether locally manifold or
not -- the term "arbitrary topology" can be made to include non-manifold topology.
not -- the term "arbitrary topology" can be said to include non-manifold topology.
----
@ -490,8 +490,8 @@ limit surface -- that is far more flexible than the results achieved from unifo
| :width: 95% | :width: 95% |
| :target: images/surface_bspline_tess1.jpg | :target: images/surface_bspline_tess2.jpg |
| | |
| Uniform tessellation of B-spline surface | Curvature-adaptive tessellation of B-spline |
| | surface |
| Uniform (3x3) tessellation of B-spline | Curvature-adaptive tessellation of B-spline |
| surface | surface |
+----------------------------------------------+----------------------------------------------+
For a simple parametric surface, the direct evaluation of the limit surface is also simple,
@ -804,7 +804,8 @@ Subdivision Schemes
OpenSubdiv provides two well known subdivision surface types -- Catmull-Clark (often referred
to more tersely as "Catmark") and Loop subdivision. Catmull-Clark is more widely used and
suited to quad-dominant meshes, while Loop is preferred for purely triangulated meshes.
suited to quad-dominant meshes, while Loop is preferred for (and requires) purely triangulated
meshes.
The many examples from previous sections have illustrated the more popular Catmull-Clark
scheme. For an example of Loop:
@ -816,10 +817,6 @@ scheme. For an example of Loop:
| :target: images/loop_cage.jpg | :target: images/loop_sub1.jpg | :target: images/loop_sub2.jpg | :target: images/loop_surface.jpg|
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+
*Note that while Loop subdivision has long been available, support for the limit surface
of Loop subdivision (i.e. arbitrary evaluation of the surface via patches) is not supported
prior to version 3.4.*
----
Boundary Interpolation Rules