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// Gawain geometric primitives
//
// This code is part of the Gawain library, with modifications
// specific to integration with Blender.
//
// Copyright 2017 Mike Erwin
//
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
// the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
#include "primitive.h"
#include "primitive_private.h"
PrimitiveClass prim_class_of_type(PrimitiveType prim_type)
{
static const PrimitiveClass classes[] =
{
[PRIM_POINTS] = PRIM_CLASS_POINT,
[PRIM_LINES] = PRIM_CLASS_LINE,
[PRIM_LINE_STRIP] = PRIM_CLASS_LINE,
[PRIM_LINE_LOOP] = PRIM_CLASS_LINE,
[PRIM_TRIANGLES] = PRIM_CLASS_SURFACE,
[PRIM_TRIANGLE_STRIP] = PRIM_CLASS_SURFACE,
[PRIM_TRIANGLE_FAN] = PRIM_CLASS_SURFACE,
[PRIM_LINE_STRIP_ADJACENCY] = PRIM_CLASS_LINE,
[PRIM_NONE] = PRIM_CLASS_NONE
};
return classes[prim_type];
}
bool prim_type_belongs_to_class(PrimitiveType prim_type, PrimitiveClass prim_class)
{
if (prim_class == PRIM_CLASS_NONE && prim_type == PRIM_NONE)
return true;
return prim_class & prim_class_of_type(prim_type);
}
GLenum convert_prim_type_to_gl(PrimitiveType prim_type)
{
#if TRUST_NO_ONE
assert(prim_type != PRIM_NONE);
#endif
static const GLenum table[] =
{
[PRIM_POINTS] = GL_POINTS,
[PRIM_LINES] = GL_LINES,
[PRIM_LINE_STRIP] = GL_LINE_STRIP,
[PRIM_LINE_LOOP] = GL_LINE_LOOP,
[PRIM_TRIANGLES] = PRIM_CLASS_SURFACE,
[PRIM_TRIANGLE_STRIP] = GL_TRIANGLE_STRIP,
[PRIM_TRIANGLE_FAN] = GL_TRIANGLE_FAN,
[PRIM_LINE_STRIP_ADJACENCY] = GL_LINE_STRIP_ADJACENCY,
};
return table[prim_type];
}
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