mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-27 05:50:05 +00:00
Minor code cleanup:
- removed Vtr::Sharpness typedef within Vtr
- culled obsolete comments from Sdc headers
This commit is contained in:
barfowl
parent
13e9136b63
commit
13f148aac8
@ -34,18 +34,18 @@ namespace OPENSUBDIV_VERSION {
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namespace Sdc {
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///
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/// \brief Types, constants and utilities related to semi-sharp creasing -- whose implementation is
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/// independent of the subdivision scheme.
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/// \brief Types, constants and utilities related to semi-sharp creasing -- whose implementation
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/// is independent of the subdivision scheme.
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///
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/// Crease is intended to be a light-weight, trivially constructed class that computes
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/// crease-related properties. An instance of an Crease is defined with a set of options
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/// that include current and future variations that will impact computations involving
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/// sharpness values.
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/// crease-related properties -- typically sharpness values and associated interpolation
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/// weights. An instance of Crease is defined with a set of options that include current
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/// and future variations that will impact computations involving sharpness values.
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///
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/// We do not to use Neighborhoods here as input. Since their sharpness values are potentially
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/// not specified (and gathered on demand), and the methods here rely more on the sharpness
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/// values and less on the topology, we choose to work directly with the sharpness values for
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/// more flexibility. We also follow the trend of using primitive arrays in the interface.
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/// The Crease methods do not use topological neighborhoods as input. The methods here
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/// rely more on the sharpness values and less on the topology, so we choose to work directly
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/// with the sharpness values. We also follow the trend of using primitive arrays in the
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/// interface to encourage local gathering for re-use.
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///
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/// Note on the need for and use of sharpness values:
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/// In general, mask queries rely on the sharpness values. The common case of a smooth
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@ -60,13 +60,11 @@ namespace Sdc {
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///
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class Crease {
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public:
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//@{
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/// Constants and related queries of sharpness values:
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///
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static float const SHARPNESS_SMOOTH; // = 0.0f, do we really need this?
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static float const SHARPNESS_SMOOTH; // = 0.0f, do we really need this?
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static float const SHARPNESS_INFINITE; // = 10.0f;
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static bool IsSmooth(float sharpness) { return sharpness <= SHARPNESS_SMOOTH; }
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@ -78,7 +76,8 @@ public:
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///
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/// Enum for the types of subdivision rules applied based on sharpness values (note these
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/// correspond to Hbr's vertex "mask"). The values are assigned to bit positions as it is
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/// useful to OR the corners of faces to quickly inspect its applicable rules.
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/// useful to use bitwise operations to inspect collections of vertices (i.e. all of the
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/// vertices incident a particular face).
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///
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enum Rule {
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RULE_UNKNOWN = 0,
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@ -89,40 +88,34 @@ public:
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};
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public:
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Crease() : _options() { }
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Crease(Options const& options) : _options(options) { }
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~Crease() { }
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//
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// Considering labeling the current/default/normal creasing method as "simple" in contrast
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// to all others that are "complex". The idea is that code can make certain assumptions
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// and take some "simple" action in some cases to avoid the higher costs of dealing with
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// more complex implementations.
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//
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bool IsUniform() const { return _options.GetCreasingMethod() == Options::CREASE_UNIFORM; }
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//@{
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///
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/// Optional sharp features:
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/// Since options treat certain topological features as infinitely sharp -- boundaries
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/// or nonmanifold features -- sharpness values should be adjusted before use. The following
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/// methods will adjust specific according to the options applied.
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/// or (in future) nonmanifold features -- sharpness values should be adjust before use.
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/// The following methods will adjust (by return) specific values according to the options
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/// applied.
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///
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float SharpenBoundaryEdge(float edgeSharpness) const;
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float SharpenBoundaryVertex(float edgeSharpness) const;
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float SharpenNonManifoldEdge(float edgeSharpness) const;
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float SharpenNonManifoldVertex(float edgeSharpness) const;
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// For future consideration
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//float SharpenNonManifoldEdge(float edgeSharpness) const;
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//float SharpenNonManifoldVertex(float edgeSharpness) const;
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//@}
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//@{
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/// Sharpness subdivision:
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/// The simple case for computing a subdivided sharpness value is as follows:
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/// The computation of a Uniform subdivided sharpness value is as follows:
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/// - Smooth edges or verts stay Smooth
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/// - Sharp edges or verts stay Sharp
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/// - semi-sharp edges or verts are decremented by 1.0
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/// but for Chaikin (and potentially future creasing schemes that improve upon it) the
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/// but for Chaikin (and potentially future non-uniform schemes that improve upon it) the
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/// computation is more involved. In the case of edges in particular, the sharpness of a
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/// child edge is determined by the sharpness in the neighborhood of the end vertex
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/// corresponding to the child. For this reason, an alternative to subdividing sharpness
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@ -155,7 +148,7 @@ public:
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int sharpEdgeCount) const;
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//@}
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/// \brief Transitional weighting
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/// \brief Transitional weighting:
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/// When the rules applicable to a parent vertex and its child differ, one or more
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/// sharpness values has "decayed" to zero. Both rules are then applicable and blended
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/// by a weight between 0 and 1 that reflects the transition. Most often this will be
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@ -166,19 +159,6 @@ public:
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/// So to properly determine a transitional weight, sharpness values for both the
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/// parent and child must be inspected, combined and clamped accordingly.
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///
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/// Open questions:
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/// - does this method need to be public, or can it reside within the mask
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/// query classes? (though it would be the same for anything non-linear, so
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/// may be worth making a protected method somewhere)
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/// - does this need further consideration at an edge-vertex?
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/// - no, the edge-vertex case is far more trivial: one non-zero sharpness
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/// for the edge that decays to zero for one or both child edges -- the
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/// transitional weight is simply the edge sharpness (clamped to 1)
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/// ? why pass only the parent vertex sharpness...
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/// - because it is so trivial to compute the child vertex sharpness?
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/// - may be better off passing both parent and child for both vertex and edge
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/// just to be clear here.
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///
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float ComputeFractionalWeightAtVertex(float vertexSharpness,
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float childVertexSharpness,
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int incidentEdgeCount,
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@ -197,14 +177,19 @@ private:
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Options _options;
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};
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//
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// Non-trivial inline declarations:
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// Inline declarations:
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//
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inline float
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Crease::SharpenBoundaryEdge(float edgeSharpness) const {
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Crease::SharpenBoundaryEdge(float /* edgeSharpness */) const {
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return (_options.GetVtxBoundaryInterpolation() != Options::VTX_BOUNDARY_NONE) ?
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SHARPNESS_INFINITE : edgeSharpness;
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//
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// Despite the presence of the BOUNDARY_NONE option, boundary edges are always sharpened.
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// Much of the code relies on sharpess to indicate boundaries to avoid the more complex
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// topological inspection
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//
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return SHARPNESS_INFINITE;
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}
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inline float
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@ -31,22 +31,6 @@ namespace OPENSUBDIV_VERSION {
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namespace Sdc {
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// BETA NOTES:
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// Several of these options are being reconsidered in light of the divergence of
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// OSD 3.0 from Hbr. In some cases the options can be expressed more clearly and free
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// of any RenderMan legacy for future use. Details are noted below:
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// "VtxBoundaryInterpolation"
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// - its effect is to sharpen edges/corners, but edges are always sharpened
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// - the "None" case serves no purpose (and would be discouraged)
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// "FVarLinearInterpolation":
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// - the new "corner only" mode will sharpen corners and NEVER sharpen smooth
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// boundaries, which we believe to be expected when sharping corners -- the
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// old "edge and corner" mode would sharpen boundaries under some situations
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// (e.g. more than three fvar values at a vertex)
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// "NonManifoldInterpolation":
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// - rules still need to be defined and implemented
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//
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///
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/// \brief All supported options applying to subdivision scheme.
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///
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@ -63,6 +47,23 @@ namespace Sdc {
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/// scheme. Ideally it remains a set of bit-fields (essentially an int) and so
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/// remains light weight and easily passed down by value.
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///
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//
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// BETA NOTES:
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// Several of these options are being reconsidered in light of the divergence of
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// OSD 3.0 from Hbr. In some cases the options can be expressed more clearly and free
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// of any RenderMan legacy for future use. Details are noted below:
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// "VtxBoundaryInterpolation"
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// - its effect is to sharpen edges/corners, but edges are always sharpened
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// - the "None" case serves no purpose (and would be discouraged)
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// "FVarLinearInterpolation":
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// - the new "corner only" mode will sharpen corners and NEVER sharpen smooth
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// boundaries, which we believe to be expected when sharping corners -- the
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// old "edge and corner" mode would sharpen boundaries under some situations
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// (e.g. more than three fvar values at a vertex)
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// "NonManifoldInterpolation":
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// - rules still need to be defined and implemented
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//
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class Options {
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public:
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enum VtxBoundaryInterpolation {
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@ -101,7 +101,7 @@ public:
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Crease::Rule childRule = Crease::RULE_UNKNOWN) const;
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///
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/// ]brief Vertex-vertex masks
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/// \brief Vertex-vertex masks
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/// If known, a single Rule or pair of Rules can be specified (indicating a crease
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/// transition) to accelerate the computation. Either no Rules, the first, or both should
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/// be specified. Specification of only the first Rule implies it to be true for both
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@ -219,8 +219,8 @@ public:
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ConstLocalIndexArray getVertexEdgeLocalIndices(Index vertIndex) const;
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// Replace these with access to sharpness buffers/arrays rather than elements:
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Sharpness getEdgeSharpness(Index edgeIndex) const;
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Sharpness getVertexSharpness(Index vertIndex) const;
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float getEdgeSharpness(Index edgeIndex) const;
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float getVertexSharpness(Index vertIndex) const;
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Sdc::Crease::Rule getVertexRule(Index vertIndex) const;
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Index findEdge(Index v0Index, Index v1Index) const;
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@ -318,8 +318,8 @@ protected:
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LocalIndexArray getVertexEdgeLocalIndices(Index vertIndex);
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// Replace these with access to sharpness buffers/arrays rather than elements:
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Sharpness& getEdgeSharpness(Index edgeIndex);
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Sharpness& getVertexSharpness(Index vertIndex);
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float& getEdgeSharpness(Index edgeIndex);
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float& getVertexSharpness(Index vertIndex);
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// Create, destroy and populate face-varying channels:
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int createFVarChannel(int fvarValueCount, Sdc::Options const& options);
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@ -442,8 +442,8 @@ protected:
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std::vector<Index> _edgeFaceCountsAndOffsets; // 2 per edge
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std::vector<Index> _edgeFaceIndices; // varies with faces per edge
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std::vector<Sharpness> _edgeSharpness; // 1 per edge
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std::vector<ETag> _edgeTags; // 1 per edge: manifold, boundary, etc.
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std::vector<float> _edgeSharpness; // 1 per edge
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std::vector<ETag> _edgeTags; // 1 per edge: manifold, boundary, etc.
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// Per-vertex:
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std::vector<Index> _vertFaceCountsAndOffsets; // 2 per vertex
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@ -454,7 +454,7 @@ protected:
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std::vector<Index> _vertEdgeIndices; // varies with valence
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std::vector<LocalIndex> _vertEdgeLocalIndices; // varies with valence, 8-bit for now
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std::vector<Sharpness> _vertSharpness; // 1 per vertex
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std::vector<float> _vertSharpness; // 1 per vertex
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std::vector<VTag> _vertTags; // 1 per vertex: manifold, Sdc::Rule, etc.
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// Face-varying channels:
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@ -620,20 +620,20 @@ Level::trimEdgeFaces(Index edgeIndex, int count) {
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//
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// Access/modify sharpness values:
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//
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inline Sharpness
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inline float
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Level::getEdgeSharpness(Index edgeIndex) const {
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return _edgeSharpness[edgeIndex];
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}
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inline Sharpness&
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inline float&
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Level::getEdgeSharpness(Index edgeIndex) {
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return _edgeSharpness[edgeIndex];
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}
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inline Sharpness
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inline float
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Level::getVertexSharpness(Index vertIndex) const {
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return _vertSharpness[vertIndex];
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}
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inline Sharpness&
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inline float&
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Level::getVertexSharpness(Index vertIndex) {
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return _vertSharpness[vertIndex];
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}
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@ -880,14 +880,14 @@ Refinement::subdivideEdgeSharpness() {
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Index cEdge = getFirstChildEdgeFromEdges();
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Index cEdgeEnd = cEdge + getNumChildEdgesFromEdges();
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for ( ; cEdge < cEdgeEnd; ++cEdge) {
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Sharpness& cSharpness = _child->_edgeSharpness[cEdge];
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float& cSharpness = _child->_edgeSharpness[cEdge];
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Level::ETag& cEdgeTag = _child->_edgeTags[cEdge];
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if (cEdgeTag._infSharp) {
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cSharpness = Sdc::Crease::SHARPNESS_INFINITE;
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} else if (cEdgeTag._semiSharp) {
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Index pEdge = _childEdgeParentIndex[cEdge];
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Sharpness pSharpness = _parent->_edgeSharpness[pEdge];
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Index pEdge = _childEdgeParentIndex[cEdge];
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float pSharpness = _parent->_edgeSharpness[pEdge];
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if (creasing.IsUniform()) {
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cSharpness = creasing.SubdivideUniformSharpness(pSharpness);
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@ -924,14 +924,14 @@ Refinement::subdivideVertexSharpness() {
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Index cVertEnd = cVertBegin + getNumChildVerticesFromVertices();
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for (Index cVert = cVertBegin; cVert < cVertEnd; ++cVert) {
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Sharpness& cSharpness = _child->_vertSharpness[cVert];
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float& cSharpness = _child->_vertSharpness[cVert];
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Level::VTag& cVertTag = _child->_vertTags[cVert];
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if (cVertTag._infSharp) {
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cSharpness = Sdc::Crease::SHARPNESS_INFINITE;
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} else if (cVertTag._semiSharp) {
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Index pVert = _childVertexParentIndex[cVert];
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Sharpness pSharpness = _parent->_vertSharpness[pVert];
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Index pVert = _childVertexParentIndex[cVert];
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float pSharpness = _parent->_vertSharpness[pVert];
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cSharpness = creasing.SubdivideVertexSharpness(pSharpness);
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@ -36,14 +36,9 @@ namespace OPENSUBDIV_VERSION {
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namespace Vtr {
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//
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// A few types (and constants) are declared here while Vtr is being
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// developed. These tend to be used by more than one Vtr class, i.e.
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// both Level and Refinement and are often present in their
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// interfaces.
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// A few types (and constants) for use within Vtr and potentially by its
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// clients (appropriately exported and retyped)
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//
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// Is the sharpness overkill -- perhaps sdc should define this...
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//
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typedef float Sharpness;
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//
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// Indices -- note we can't use sized integer types like uint32_t, etc. as use of
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@ -63,9 +58,10 @@ static const Index INDEX_INVALID = -1;
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inline bool IndexIsValid(Index index) { return (index != INDEX_INVALID); }
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//
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// Note for aggregate types the use of "vector" wraps an std:;vector (typically a
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// member variable) and is fully resizable and owns its own storage, whereas "array"
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// is typically used in index a fixed subset of pre-allocated memory:
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// Note for aggregate types that the use of "vector" in the name indicates a class
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// that wraps an std:;vector (typically a member variable) which is fully resizable
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// and owns its own storage, whereas "array" indicates a fixed block of pre-allocated
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// memory:
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//
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typedef std::vector<Index> IndexVector;
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@ -79,9 +75,7 @@ typedef ConstArray<LocalIndex> ConstLocalIndexArray;
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} // end namespace Vtr
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* VTR_TYPES_H */
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