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// Copyright 2016 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_RENDER_TREE_MESH_H_
#define COBALT_RENDER_TREE_MESH_H_
#include <vector>
#include "base/basictypes.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/optional.h"
#include "starboard/types.h"
#include "third_party/glm/glm/vec2.hpp"
#include "third_party/glm/glm/vec3.hpp"
namespace cobalt {
namespace render_tree {
// Represents a mesh (3D position + texture vertex list) to which render trees
// can be mapped for 3D projection by being applied a filter.
class Mesh : public base::RefCountedThreadSafe<Mesh> {
public:
// Vertices interleave position (x, y, z) and texture (u, v) coordinates.
struct Vertex {
float x;
float y;
float z;
float u;
float v;
Vertex() : x(0.0f), y(0.0f), z(0.0f), u(0.0f), v(0.0f) {}
Vertex(float x, float y, float z, float u, float v)
: x(x), y(y), z(z), u(u), v(v) {}
};
COMPILE_ASSERT(sizeof(Vertex) == sizeof(float) * 5,
vertex_struct_size_exceeds_5_floats);
// Defines how the mesh faces are constructed from the ordered list of
// vertices.
enum DrawMode {
kDrawModeTriangles = 0,
kDrawModeTriangleStrip = 1,
kDrawModeTriangleFan = 2
};
virtual uint32 GetEstimatedSizeInBytes() const = 0;
protected:
virtual ~Mesh() {}
// Allow the reference counting system access to our destructor.
friend class base::RefCountedThreadSafe<Mesh>;
};
} // namespace render_tree
} // namespace cobalt
#endif // COBALT_RENDER_TREE_MESH_H_