removed clang-format and clang_complete files from the repo

[dosdemo] / src / polyfill.c

diff --git a/src/polyfill.c b/src/polyfill.c
deleted file mode 100644 (file)
index 7bffaa3..0000000
--- a/src/polyfill.c
+++ /dev/null
@@ -1,134 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <alloca.h>
-#include "polyfill.h"
-#include "gfxutil.h"
-#include "demo.h"
-
-void (*fillfunc[])(struct pvertex*, int) = {
-       polyfill_wire,
-       polyfill_flat,
-       0, 0, 0
-};
-
-struct pimage pimg_fb, pimg_texture;
-
-void polyfill(int mode, struct pvertex *verts, int nverts)
-{
-#ifndef NDEBUG
-       if(!fillfunc[mode]) {
-               fprintf(stderr, "polyfill mode %d not implemented\n", mode);
-               abort();
-       }
-#endif
-
-       fillfunc[mode](verts, nverts);
-}
-
-void polyfill_wire(struct pvertex *verts, int nverts)
-{
-       int i, x0, y0, x1, y1;
-       struct pvertex *v = verts;
-       unsigned short color = ((v->r << 8) & 0xf800) |
-               ((v->g << 3) & 0x7e0) | ((v->b >> 3) & 0x1f);
-
-       for(i=0; i<nverts - 1; i++) {
-               x0 = v->x >> 8;
-               y0 = v->y >> 8;
-               ++v;
-               x1 = v->x >> 8;
-               y1 = v->y >> 8;
-               if(clip_line(&x0, &y0, &x1, &y1, 0, 0, pimg_fb.width, pimg_fb.height)) {
-                       draw_line(x0, y0, x1, y1, color);
-               }
-       }
-       x0 = verts[0].x >> 8;
-       y0 = verts[0].y >> 8;
-       if(clip_line(&x1, &y1, &x0, &y0, 0, 0, pimg_fb.width, pimg_fb.height)) {
-               draw_line(x1, y1, x0, y0, color);
-       }
-}
-
-static void scan_edge(struct pvertex *v0, struct pvertex *v1, struct pvertex *edge);
-
-#define NEXTIDX(x) (((x) - 1 + nverts) % nverts)
-#define PREVIDX(x) (((x) + 1) % nverts)
-
-void polyfill_flat(struct pvertex *pv, int nverts)
-{
-       int i;
-       int32_t y;
-       int topidx = 0, botidx = 0, sline;
-       struct pvertex *left, *right;
-       /*uint16_t color = PACK_RGB16(pv[0].r, pv[0].g, pv[0].b);*/
-
-       for(i=1; i<nverts; i++) {
-               if(pv[i].y < pv[topidx].y) topidx = i;
-               if(pv[i].y > pv[botidx].y) botidx = i;
-       }
-
-       left = (struct pvertex*)alloca(pimg_fb.height * sizeof *left);
-       right = (struct pvertex*)alloca(pimg_fb.height * sizeof *right);
-       memset(left, 0, pimg_fb.height * sizeof *left);
-       memset(right, 0, pimg_fb.height * sizeof *right);
-
-       for(i=0; i<nverts; i++) {
-               int next = NEXTIDX(i);
-               int32_t y0 = pv[i].y;
-               int32_t y1 = pv[next].y;
-
-               if((y0 >> 8) == (y1 >> 8)) {
-                       if(y0 > y1) {
-                               int idx = y0 >> 8;
-                               left[idx].x = pv[i].x < pv[next].x ? pv[i].x : pv[next].x;
-                               right[idx].x = pv[i].x < pv[next].x ? pv[next].x : pv[i].x;
-                       }
-               } else {
-                       scan_edge(pv + i, pv + next, y0 > y1 ? left : right);
-               }
-       }
-
-       y = pv[topidx].y;
-       while(y < pv[botidx].y) {
-               int32_t x;
-               uint16_t *pixptr;
-
-               sline = y >> 8;
-               x = left[sline].x;
-
-               pixptr = pimg_fb.pixels + sline * pimg_fb.width + (x >> 8);
-
-               while(x <= right[sline].x) {
-                       *pixptr++ += 15;
-                       x += 256;
-               }
-               y += 256;
-       }
-}
-
-static void scan_edge(struct pvertex *v0, struct pvertex *v1, struct pvertex *edge)
-{
-       int32_t x, y, dx, dy, slope;
-       int idx;
-
-       if(v0->y > v1->y) {
-               struct pvertex *tmp = v0;
-               v0 = v1;
-               v1 = tmp;
-       }
-
-       dy = v1->y - v0->y;
-       dx = v1->x - v0->x;
-       slope = (dx << 8) / dy;
-       idx = v0->y >> 8;
-
-       x = v0->x;
-       y = v0->y;
-       while(y <= v1->y) {
-               edge[idx++].x = x;
-               x += slope;
-               y += 256;
-       }
-}