mirror of
https://github.com/love2d/love.git
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rude
147 lines
3.6 KiB
C++
147 lines
3.6 KiB
C++
/**
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* Copyright (c) 2006-2010 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#ifndef LOVE_GRAPHICS_OPENGL_IMAGE_H
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#define LOVE_GRAPHICS_OPENGL_IMAGE_H
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// LOVE
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#include <common/Matrix.h>
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#include <common/math.h>
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#include <common/config.h>
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#include <image/ImageData.h>
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#include <graphics/Image.h>
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#include "Quad.h"
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// OpenGL
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#include "GLee.h"
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#include <SDL/SDL_opengl.h>
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namespace love
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{
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namespace graphics
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{
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namespace opengl
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{
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/**
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* A drawable image based on OpenGL-textures. This class takes ImageData
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* objects and create textures on the GPU for fast drawing.
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*
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* @author Anders Ruud
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**/
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class Image : public love::graphics::Image
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{
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private:
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// The ImageData from which the texture is created.
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love::image::ImageData * data;
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// Width and height of the hardware texture.
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float width, height;
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// OpenGL texture identifier.
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GLuint texture;
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// The source vertices of the image.
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vertex vertices[4];
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public:
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/**
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* Creates a new Image. Not that anything is ready to use
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* before load is called.
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*
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* @param file The file from which to load the image.
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**/
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Image(love::image::ImageData * data);
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/**
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* Destructor. Deletes the hardware texture and other resources.
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**/
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virtual ~Image();
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float getWidth() const;
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float getHeight() const;
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const vertex * getVertices() const;
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love::image::ImageData * getData() const;
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/**
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* Generate vertices according to a subimage.
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*
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* Note: out-of-range values will be clamped.
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* Note: the vertex colors will not be changed.
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*
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* @param x The top-left corner of the subimage along the x-axis.
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* @param y The top-left corner of the subimage along the y-axis.
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* @param w The width of the subimage.
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* @param h The height of the subimage.
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* @param vertices A vertex array of size four.
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**/
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void getRectangleVertices(int x, int y, int w, int h, vertex * vertices) const;
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/**
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* @copydoc Drawable::draw()
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**/
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void draw(float x, float y, float angle, float sx, float sy, float ox, float oy) const;
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/**
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* This function draws a section of the image using a Quad object.
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*
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* @copydetails Image::draws()
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* @param frame Represents the region of the Image to draw.
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**/
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void drawq(Quad * quad, float x, float y, float angle, float sx, float sy, float ox, float oy) const;
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/**
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* Sets the filter mode.
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*
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* @param mode The filter mode.
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**/
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void setFilter(Image::Filter f);
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Image::Filter getFilter() const;
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void setWrap(Image::Wrap r);
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Image::Wrap getWrap() const;
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void bind() const;
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bool load();
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void unload();
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// Implements Volatile.
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bool loadVolatile();
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void unloadVolatile();
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private:
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void drawv(const Matrix & t, const vertex * v) const;
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}; // Image
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} // opengl
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} // graphics
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} // love
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#endif // LOVE_GRAPHICS_OPENGL_IMAGE_H
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