pcb and initial code from https://github.com/das-labor/borgware-2d.git
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52 lines
1.1 KiB
52 lines
1.1 KiB
#ifndef PIXEL_H
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#define PIXEL_H
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#define LINEBYTES (((NUM_COLS-1)/8)+1)
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extern unsigned char shl_table[];
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extern unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES];
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typedef struct {
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unsigned char x;
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unsigned char y;
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} pixel;
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typedef enum {right,left,up,down} direction;
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typedef struct {
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pixel pos;
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direction dir;
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enum{clear=0, set=1} mode;
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} cursor;
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/****************************************************************************
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* Pixel routines
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*/
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void clear_screen(unsigned char value);
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void setpixel(pixel p, unsigned char value);
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#define clearpixel(p) setpixel(p, 0);
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// straight or non straight line from one point to the other
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// value=brightness
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void line(pixel p1, pixel p2 ,unsigned char value);
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// filled_rectangle p1=upper right corner, w=width, h=height ,
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// value=brightness
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void filled_rectangle(pixel p1, unsigned char w, unsigned char h ,unsigned char value);
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unsigned char get_pixel(pixel p);
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unsigned char get_next_pixel(pixel p, direction dir);
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pixel next_pixel(pixel pix, direction dir);
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direction direction_r(direction dir);
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void shift_pixmap_l();
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void set_cursor(cursor* cur, pixel p);
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#endif // PIXEL_H
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