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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Harry Storbacka
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#ifndef header_outline_provider_bitmap_generic
#define header_outline_provider_bitmap_generic
#include "API/Display/Collision/contour.h"
class CL_PixelBuffer;
class CL_OutlineProviderBitmap_Generic
{
//!Construction
public:
CL_OutlineProviderBitmap_Generic(CL_PixelBuffer pbuf, int alpha_limit=128, bool get_insides=true);
~CL_OutlineProviderBitmap_Generic();
//!Attributes
std::vector<CL_Contour> contours;
int width, height;
private:
// find the start point of the next outline
CL_Pointf find_next_contour_start(unsigned int x, unsigned int y);
// add the next point
void get_next_point(std::vector<CL_Pointf> &points);
// test if a point is already included in some outline
CL_Contour *point_in_outline(unsigned int x, unsigned int y);
// test if a pixel is alpha or opaque
bool is_opaque(int x, int y);
// test if a corner is part of an edge
bool is_edge(int x, int y);
inline unsigned char &get_corner(int x, int y)
{
return data[y*(width+1)+x];
}
// Find the contours
void find_contours();
unsigned char *data;
unsigned char last_corner;
bool get_insides;
int alpha_limit;
int alpha_pixel;
CL_PixelBuffer &pb;
CL_Point last_point;
enum MoveDir
{
DIR_LEFT=0,
DIR_RIGHT,
DIR_UP,
DIR_DOWN
} last_dir;
};
#endif
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