src/glShared.h

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 - 2017 Teemu Piippo
 *
 *  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 3 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, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <QOpenGLFunctions>
#include <QGenericMatrix>
#include "basics.h"

class GLRotationMatrix : public QGenericMatrix<4, 4, GLfloat>
{
public:
	GLRotationMatrix() {}
	GLRotationMatrix(GLfloat values[16]) :
	    QGenericMatrix<4, 4, GLfloat> {values} {}
	GLRotationMatrix(std::initializer_list<GLfloat>&& values)
	{
		auto iterator = values.begin();

		for (int i = 0; i < 4; ++i)
		for (int j = 0; j < 4; ++j)
		{
			(*this)(i, j) = *iterator;
			++iterator;
		}
	}
};

inline void glMultMatrixf(const GLRotationMatrix& matrix)
{
	glMultMatrixf(matrix.constData());
}

class LDObject;

struct LDPolygon
{
	char		num;
	Vertex		vertices[4];
	int			id;
	int			color;

	inline int numVertices() const
	{
		return (num == 5) ? 4 : num;
	}
};

enum class VboClass
{
	Lines,
	Triangles,
	Quads,
	ConditionalLines,
	_End
};

MAKE_ITERABLE_ENUM(VboClass)

enum class VboSubclass
{
	Surfaces,
	NormalColors,
	PickColors,
	BfcFrontColors,
	BfcBackColors,
	RandomColors,
	Normals,
	_End
};

MAKE_ITERABLE_ENUM(VboSubclass)

enum
{
	NumVbos = EnumLimits<VboClass>::Count * EnumLimits<VboSubclass>::Count
};

// KDevelop doesn't seem to understand some VBO stuff
#ifdef IN_IDE_PARSER
using GLint = int;
using GLsizei = int;
using GLenum = unsigned int;
using GLuint = unsigned int;
void glBindBuffer (GLenum, GLuint);
void glGenBuffers (GLuint, GLuint*);
void glDeleteBuffers (GLuint, GLuint*);
void glBufferData (GLuint, GLuint, void*, GLuint);
void glBufferSubData (GLenum, GLint, GLsizei, void*);
#endif