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// Copyright 2020 Blender Foundation. All rights reserved.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// Author: Sergey Sharybin
#include "internal/topology/mesh_topology.h"
#include <cassert>
namespace blender {
namespace opensubdiv {
MeshTopology::MeshTopology() : num_vertices_(0), num_edges_(0)
{
}
MeshTopology::~MeshTopology()
{
}
////////////////////////////////////////////////////////////////////////////////
// Vertices.
void MeshTopology::setNumVertices(int num_vertices)
{
num_vertices_ = num_vertices;
}
int MeshTopology::getNumVertices() const
{
return num_vertices_;
}
void MeshTopology::setVertexSharpness(int vertex_index, float sharpness)
{
assert(vertex_index >= 0);
assert(vertex_index < getNumVertices());
ensureVertexTagsSize(vertex_index + 1);
vertex_tags_[vertex_index].sharpness = sharpness;
}
float MeshTopology::getVertexSharpness(int vertex_index) const
{
assert(vertex_index >= 0);
assert(vertex_index < getNumVertices());
if (vertex_index >= vertex_tags_.size()) {
// Sharpness for the vertex was never provided.
return 0.0f;
}
return vertex_tags_[vertex_index].sharpness;
}
void MeshTopology::ensureVertexTagsSize(int num_vertices)
{
if (vertex_tags_.size() < num_vertices) {
vertex_tags_.resize(num_vertices);
}
}
////////////////////////////////////////////////////////////////////////////////
// Edges.
void MeshTopology::setNumEdges(int num_edges)
{
num_edges_ = num_edges;
}
int MeshTopology::getNumEdges() const
{
return num_edges_;
}
void MeshTopology::setEdgeSharpness(int edge_index, float sharpness)
{
assert(edge_index >= 0);
ensureNumEdgesAtLeast(edge_index + 1);
if (sharpness < 1e-6f) {
return;
}
ensureEdgeTagsSize(edge_index + 1);
edge_tags_[edge_index].sharpness = sharpness;
}
float MeshTopology::getEdgeSharpness(int edge_index) const
{
assert(edge_index >= 0);
if (edge_index >= edge_tags_.size()) {
// NOTE: It's possible that full topology is not known and that there was
// never sharpness assigned to any of the edges.
return 0.0f;
}
return edge_tags_[edge_index].sharpness;
}
void MeshTopology::ensureNumEdgesAtLeast(int num_edges)
{
if (getNumEdges() < num_edges) {
setNumEdges(num_edges);
}
}
void MeshTopology::ensureEdgeTagsSize(int num_edges)
{
if (edge_tags_.size() < num_edges) {
edge_tags_.resize(num_edges);
}
}
} // namespace opensubdiv
} // namespace blender
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