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egi_fbgeom.h
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/*------------------------------------------------------------------------------
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
Referring to: http://blog.chinaunix.net/uid-22666248-id-285417.html
本文的copyright归[email protected] 所有，使用GPL发布，可以自由拷贝，转载。
但转载请保持文档的完整性，注明原作者及原链接，严禁用于任何商业用途。
博客：yuweixian4230.blog.chinaunix.net
Modified and appended by: Midas Zhou
[email protected](Not in use since 2022_03_01)
-----------------------------------------------------------------------------*/
#ifndef __EGI_FBGEOM_H__
#define __EGI_FBGEOM_H__
#include <stdio.h>
#include <linux/fb.h>
#include <stdint.h>
#include <stdbool.h>
#include "egi_fbdev.h"
#include "egi.h"
#include "egi_filo.h"
#ifdef __cplusplus
extern "C" {
#endif
/* for draw_dot(), roll back to start if reach boundary of FB mem */
#define no_FB_DOTOUT_ROLLBACK /* also check FB_SYMBOUT_ROLLBACK in symbol.h */
extern EGI_BOX gv_fb_box;
/* functions */
//////////////////////////////////////////////////////////
void fbprint_fbcolor(void);
void fbprint_fbpix(FBDEV *dev);
void fbset_speed(unsigned int speed);
void fbset_color(uint16_t color);
void fbset_color2(FBDEV *dev, uint16_t color);
void fbset_alpha(FBDEV *dev, EGI_8BIT_ALPHA alpha);
void fbreset_alpha(FBDEV *dev);
void fbclear_bkBuff(FBDEV *dev, uint16_t color); /* OBOSELETE, to use fb_clear_backBuff() instead. */
void clear_screen(FBDEV *dev, uint16_t color);
bool pxy_online(int px,int py, int x1, int y1,int x2, int y2);
bool point_online(const EGI_POINT *pxy, const EGI_POINT *pts);
//bool point_inbox(int px,int py,int x1,int y1,int x2,int y2);
bool pxy_inbox(int px,int py,int x1,int y1,int x2,int y2);
bool pxy_inbox2(int px,int py, const EGI_BOX* box);
//bool point_inbox2(const EGI_POINT *point, const EGI_BOX* box);
bool point_inbox(const EGI_POINT *point, const EGI_BOX* box);
bool point_incircle(const EGI_POINT *pxy, const EGI_POINT *pc, int r);
bool point_intriangle(const EGI_POINT *pxy, const EGI_POINT *tripts);
bool box_inbox(EGI_BOX* box, EGI_BOX* container);
bool box_outbox(EGI_BOX* box, EGI_BOX* container);
EGI_16BIT_COLOR fbget_pixColor(FBDEV *fb_dev, int x, int y);
int fbget_zbuff(FBDEV *fb_dev, int x, int y);
//////////////// Draw function ///////////////
/****** NOTE: for 16bit color only! ******/
int draw_dot(FBDEV *dev,int x,int y);
/// See fdraw_dot().
void draw_line_simple(FBDEV *dev,int x1,int y1,int x2,int y2);
void draw3D_line_simple(FBDEV *dev, int x1,int y1, int z1, int x2,int y2, int z2);
void draw_line_antialias(FBDEV *dev,int x1,int y1,int x2,int y2);
void draw_line(FBDEV *dev,int x1,int y1,int x2,int y2); /* wrapper of draw_line_simple() and fraw_line() */
void draw3D_line(FBDEV *dev, int x1,int y1,int z1, int x2,int y2,int z2);
void draw_button_frame( FBDEV *dev, unsigned int type, EGI_16BIT_COLOR color,
int x0, int y0, unsigned int width, unsigned int height, unsigned int w);
void draw_wline_nc(FBDEV *dev,int x1,int y1,int x2,int y2, unsigned int w);
void draw_wline(FBDEV *dev,int x1,int y1,int x2,int y2, unsigned int w);
void float_draw_wline(FBDEV *dev,int x1,int y1,int x2,int y2, unsigned int w, bool roundEnd);
void draw_dash_wline(FBDEV *dev,int x1,int y1, int x2,int y2, unsigned int w, int sl, int vl);
void draw_pline_nc(FBDEV *dev, EGI_POINT *points,int pnum, unsigned int w);
void draw_pline(FBDEV *dev, EGI_POINT *points,int pnum, unsigned int w);
void draw_oval(FBDEV *dev,int x,int y);
void draw_rect(FBDEV *dev,int x1,int y1,int x2,int y2);
void draw_wrect(FBDEV *dev,int x1,int y1,int x2,int y2, int w);
void draw_roundcorner_wrect(FBDEV *dev,int x1,int y1,int x2,int y2, int r, int w);
int draw_filled_rect(FBDEV *dev,int x1,int y1,int x2,int y2);
int draw_blend_filled_roundcorner_rect(FBDEV *dev,int x1,int y1,int x2,int y2, int r,
EGI_16BIT_COLOR color, EGI_8BIT_ALPHA alpha);
void draw_filled_box(FBDEV *dev, EGI_BOX *box);
void draw_blend_filled_rect( FBDEV *dev, int x1, int y1, int x2, int y2,
EGI_16BIT_COLOR color, EGI_8BIT_ALPHA alpha );
int draw_filled_rect2(FBDEV *dev,uint16_t color, int x1,int y1,int x2,int y2);
void draw_warc(FBDEV *dev, int x0, int y0, int r, float Sang, float Eang, unsigned int w);
void draw_filled_pieSlice(FBDEV *dev, int x0, int y0, int r, float Sang, float Eang );
void draw_circle(FBDEV *dev, int x, int y, int r);
void draw_pcircle(FBDEV *dev, int x0, int y0, int r, unsigned int w);
void draw_triangle(FBDEV *dev, EGI_POINT *points); /* Anti_aliasing ON/OFF */
void draw_filled_triangle(FBDEV *dev, EGI_POINT *points); /* Anti_aliasing ON/OFF */
void draw_filled_triangle_outline(FBDEV *dev, EGI_POINT *points);
//void draw_filled_triangle2(FBDEV *fb_dev, float x0, float y0, float x1, float y1, float x2, float y2,
// EGI_16BIT_COLOR color0, EGI_16BIT_COLOR color1, EGI_16BIT_COLOR color2 );
void draw_filled_triangle2( FBDEV *fb_dev,int x0, int y0, int x1, int y1, int x2, int y2,
float z0, float z1, float z2 );
int pixelate_filled_triangle2( int x0, int y0, int x1, int y1, int x2, int y2,
float z0, float z1, float z2,
float **pXYZ, size_t *capacity, size_t *np);
void draw_filled_triangle3( FBDEV *fb_dev, int x0, int y0, int x1, int y1, int x2, int y2,
EGI_16BIT_COLOR color0, EGI_16BIT_COLOR color1, EGI_16BIT_COLOR color2 );
void draw_filled_triangle4( FBDEV *fb_dev,int x0, int y0, int x1, int y1, int x2, int y2,
float z0, float z1, float z2,
EGI_16BIT_COLOR color0, EGI_16BIT_COLOR color1, EGI_16BIT_COLOR color2 );
void draw_blend_filled_triangle(FBDEV *dev, EGI_POINT *points, EGI_16BIT_COLOR color, uint8_t alpha);
void draw_filled_annulus(FBDEV *dev, int x0, int y0, int r, unsigned int w);
void draw_filled_circle(FBDEV *dev, int x, int y, int r); /* Anti_aliasing ON/OFF */
//////////////// new draw function, with color /////////////
void draw_circle2(FBDEV *dev, int x, int y, int r, EGI_16BIT_COLOR color);
void draw_filled_annulus2(FBDEV *dev, int x0, int y0, int r, unsigned int w, EGI_16BIT_COLOR color);
void draw_filled_circle2(FBDEV *dev, int x, int y, int r, EGI_16BIT_COLOR color);
void draw_blend_filled_circle(FBDEV *dev, int x, int y, int r, EGI_16BIT_COLOR color, EGI_8BIT_ALPHA alpha);
void draw_blend_filled_annulus( FBDEV *dev, int x0, int y0, int r, unsigned int w,
EGI_16BIT_COLOR color, EGI_8BIT_ALPHA alpha );
/////////////// Draw curves //////////////
int draw_spline(FBDEV* dev, int np, EGI_POINT *pxy, int endtype, unsigned int w);
int draw_filled_spline( FBDEV *fbdev, int np, EGI_POINT *pxy, int endtype, unsigned int w,
int baseY, EGI_16BIT_COLOR color, EGI_8BIT_ALPHA alpha);
int draw_spline2(FBDEV* dev, int np, EGI_POINT *pxy, int endtype, unsigned int w);
int draw_bezier_curve(FBDEV *fbdev, int np, EGI_POINT *pxy, float *ws, unsigned int w);
int draw_Bspline(FBDEV *fbdev, int np, EGI_POINT *pxy, float *ws, int deg, unsigned int w);
/* Simple anti-aliasing DRAW functions */
void fdraw_dot(FBDEV *fbdev, float x, float y);
void fdraw_line(FBDEV *dev, float x1, float y1, float x2, float y2);
void fdraw_circle(FBDEV *dev, float x, float y, float r);
int fb_cpyto_buf(FBDEV *fb_dev, int x1, int y1, int x2, int y2, uint16_t *buf);
int fb_cpyfrom_buf(FBDEV *fb_dev, int x1, int y1, int x2, int y2, const uint16_t *buf);
int fb_buffer_FBimg(FBDEV *fb_dev, int nb);
int fb_restore_FBimg(FBDEV *fb_dev, int nb, bool clean);
/* square mapping */
void fb_drawimg_SQMap(int n, struct egi_point_coord x0y0, const uint16_t *image,
const struct egi_point_coord *SQMat_XRYR);
/* annulus mapping */
void fb_drawimg_ANMap(int n, int ni, struct egi_point_coord x0y0, const uint16_t *image,
const struct egi_point_coord *ANMat_XRYR);
int fb_scale_pixbuf(unsigned int owid, unsigned int ohgt, unsigned int nwid, unsigned int nhgt,
const uint16_t *obuf, uint16_t *nbuf);
int egi_getpoit_interpol2p(EGI_POINT *pn, int off, const EGI_POINT *pa, const EGI_POINT *pb);
int egi_numstep_btw2p(int step, const EGI_POINT *pa, const EGI_POINT *pb);
int egi_randp_inbox(EGI_POINT *pr, const EGI_BOX *box);
int egi_randp_boxsides(EGI_POINT *pr, const EGI_BOX *box);
#ifdef __cplusplus
}
#endif
#endif