Import thekla_atlas

As requested by reduz, an import of thekla_atlas into thirdparty/

4 files changed, 136 insertions, 0 deletions

diff --git a/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.cpp b/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.cpp
new file mode 100644
index 0000000000..69fd1deb24
--- /dev/null
+++ b/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.cpp
@@ -0,0 +1,54 @@
+// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
+
+#include "nvmesh.h" // pch
+
+#include "Bounds.h"
+
+#include "nvmesh/BaseMesh.h"
+#include "nvmesh/halfedge/Mesh.h"
+#include "nvmesh/halfedge/Vertex.h"
+
+#include "nvmath/Box.inl"
+
+using namespace nv;
+
+Box MeshBounds::box(const BaseMesh * mesh)
+{
+    nvCheck(mesh != NULL);
+
+    Box bounds;
+    bounds.clearBounds();
+
+    const uint vertexCount = mesh->vertexCount();
+    for (uint v = 0; v < vertexCount; v++)
+    {
+        const BaseMesh::Vertex & vertex = mesh->vertexAt(v);
+        bounds.addPointToBounds( vertex.pos );
+    }
+
+    return bounds;
+}
+
+Box MeshBounds::box(const HalfEdge::Mesh * mesh)
+{
+    nvCheck(mesh != NULL);
+
+    Box bounds;
+    bounds.clearBounds();
+
+    const uint vertexCount = mesh->vertexCount();
+    for (uint v = 0; v < vertexCount; v++)
+    {
+        const HalfEdge::Vertex * vertex = mesh->vertexAt(v);
+        nvDebugCheck(vertex != NULL);
+        bounds.addPointToBounds( vertex->pos );
+    }
+
+    return bounds;
+}
+
+/*Sphere MeshBounds::sphere(const HalfEdge::Mesh * mesh)
+{
+    // @@ TODO
+    return Sphere();
+}*/
diff --git a/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.h b/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.h
new file mode 100644
index 0000000000..1cb5b7b905
--- /dev/null
+++ b/thirdparty/thekla_atlas/nvmesh/geometry/Bounds.h
@@ -0,0 +1,28 @@
+// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
+
+#pragma once
+#ifndef NV_MESH_MESHBOUNDS_H
+#define NV_MESH_MESHBOUNDS_H
+
+#include <nvmath/Sphere.h>
+#include <nvmath/Box.h>
+
+#include <nvmesh/nvmesh.h>
+
+namespace nv
+{
+    class BaseMesh;
+    namespace HalfEdge { class Mesh; }
+
+    // Bounding volumes computation.
+    namespace MeshBounds
+    {
+        Box box(const BaseMesh * mesh);
+        Box box(const HalfEdge::Mesh * mesh);
+
+        Sphere sphere(const HalfEdge::Mesh * mesh);
+    }
+
+} // nv namespace
+
+#endif // NV_MESH_MESHBOUNDS_H
diff --git a/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.cpp b/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.cpp
new file mode 100644
index 0000000000..e0c271663b
--- /dev/null
+++ b/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.cpp
@@ -0,0 +1,36 @@
+// This code is in the public domain -- castano@gmail.com
+
+#include "nvmesh.h" // pch
+
+#include "Measurements.h"
+#include "nvmesh/halfedge/Mesh.h"
+#include "nvmesh/halfedge/Face.h"
+
+using namespace nv;
+
+float nv::computeSurfaceArea(const HalfEdge::Mesh * mesh)
+{
+    float area = 0;
+
+    for (HalfEdge::Mesh::ConstFaceIterator it(mesh->faces()); !it.isDone(); it.advance())
+    {
+        const HalfEdge::Face * face = it.current();
+        area += face->area();
+    }
+    nvDebugCheck(area >= 0);
+
+    return area;
+}
+
+float nv::computeParametricArea(const HalfEdge::Mesh * mesh)
+{
+    float area = 0;
+
+    for (HalfEdge::Mesh::ConstFaceIterator it(mesh->faces()); !it.isDone(); it.advance())
+    {
+        const HalfEdge::Face * face = it.current();
+        area += face->parametricArea();
+    }
+
+    return area;
+}
diff --git a/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.h b/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.h
new file mode 100644
index 0000000000..0be863b79e
--- /dev/null
+++ b/thirdparty/thekla_atlas/nvmesh/geometry/Measurements.h
@@ -0,0 +1,18 @@
+// This code is in the public domain -- castano@gmail.com
+
+#pragma once
+#ifndef NV_MESH_MESHMEASUREMENTS_H
+#define NV_MESH_MESHMEASUREMENTS_H
+
+#include "nvmesh/nvmesh.h"
+
+namespace nv
+{
+    namespace HalfEdge { class Mesh; }
+
+	float computeSurfaceArea(const HalfEdge::Mesh * mesh);
+	float computeParametricArea(const HalfEdge::Mesh * mesh);
+
+} // nv namespace
+
+#endif // NV_MESH_MESHMEASUREMENTS_H