85 lines
1.5 KiB
C
85 lines
1.5 KiB
C
#include <c64/memmap.h>
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#include <c64/vic.h>
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#include <gfx/bitmap.h>
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#include <string.h>
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#include <conio.h>
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#include <math.h>
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#define Color ((char *)0xd000)
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#define Hires ((char *)0xe000)
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Bitmap Screen;
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void init(void)
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{
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mmap_trampoline();
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mmap_set(MMAP_RAM);
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memset(Color, 0x10, 1000);
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memset(Hires, 0x00, 8000);
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mmap_set(MMAP_NO_ROM);
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vic_setmode(VICM_HIRES, Color, Hires);
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vic.color_border = VCOL_WHITE;
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bm_init(&Screen, Hires, 40, 25);
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}
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void done(void)
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{
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mmap_set(MMAP_ROM);
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getch();
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vic_setmode(VICM_TEXT, (char *)0x0400, (char *)0x1000);
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}
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int main(void)
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{
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init();
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bmu_rect_pattern(&Screen, 0, 0, 320, 200, NineShadesOfGrey[4]);
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bmu_rect_clear(&Screen, 14, 14, 304, 184);
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bmu_rect_fill(&Screen, 8, 8, 304, 184);
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bmu_rect_clear(&Screen, 10, 10, 300, 180);
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ClipRect cr = {11, 11, 309, 189};
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float px[10], py[10];
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for(int i=0; i<10; i++)
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{
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float w = i * PI / 5, c = cos(w), s = sin(w), r = (i & 1) ? 1.0 : 0.4;
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px[i] = r * c; py[i] = r * s;
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}
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for(int i=0; i<128; i++)
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{
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int rpx[10], rpy[10];
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float r = i + 4;
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float w = i * PI / 16, c = r * cos(w), s = r * sin(w), cw = r * cos(w * 2.0), sw = r * sin(w * 2.0);
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for(int j=0; j<10; j++)
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{
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float fx = px[j], fy = py[j];
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rpx[j] = 160 + cw + fx * c + fy * s;
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rpy[j] = 100 + sw - fx * s + fy * c;
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}
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bm_polygon_nc_fill(&Screen, &cr, rpx, rpy, 10, NineShadesOfGrey[i % 9]);
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for(int j=0; j<10; j++)
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{
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int k = (j + 1) % 10;
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bm_line(&Screen, &cr, rpx[j], rpy[j], rpx[k], rpy[k], 0xff, LINOP_SET);
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}
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}
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done();
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return 0;
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}
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