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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "precompiled.h"
#include "../../Include/Rocket/Core/GeometryUtilities.h"
namespace Rocket {
namespace Core {
GeometryUtilities::GeometryUtilities()
{
}
GeometryUtilities::~GeometryUtilities()
{
}
// Generates a quad from a position, size and colour.
void GeometryUtilities::GenerateQuad(Vertex* vertices, int* indices, const Vector2f& origin, const Vector2f& dimensions, const Colourb& colour, int index_offset)
{
GenerateQuad(vertices, indices, origin, dimensions, colour, Vector2f(0, 0), Vector2f(1, 1), index_offset);
}
// Generates a quad from a position, size, colour and texture coordinates.
void GeometryUtilities::GenerateQuad(Vertex* vertices, int* indices, const Vector2f& origin, const Vector2f& dimensions, const Colourb& colour, const Vector2f& top_left_texcoord, const Vector2f& bottom_right_texcoord, int index_offset)
{
vertices[0].position = origin;
vertices[0].colour = colour;
vertices[0].tex_coord = top_left_texcoord;
vertices[1].position = Vector2f(origin.x + dimensions.x, origin.y);
vertices[1].colour = colour;
vertices[1].tex_coord = Vector2f(bottom_right_texcoord.x, top_left_texcoord.y);
vertices[2].position = origin + dimensions;
vertices[2].colour = colour;
vertices[2].tex_coord = bottom_right_texcoord;
vertices[3].position = Vector2f(origin.x, origin.y + dimensions.y);
vertices[3].colour = colour;
vertices[3].tex_coord = Vector2f(top_left_texcoord.x, bottom_right_texcoord.y);
indices[0] = index_offset + 0;
indices[1] = index_offset + 3;
indices[2] = index_offset + 1;
indices[3] = index_offset + 1;
indices[4] = index_offset + 3;
indices[5] = index_offset + 2;
}
}
}
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