mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-04 03:29:29 +00:00
164 lines
2.8 KiB
C
164 lines
2.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include "gr-sim.h"
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#include "tfv_utils.h"
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#include "tfv_zp.h"
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#include "demo_title.c"
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#define PI 3.14159265358979323946264
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int main(int argc, char **argv) {
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int xx,yy,ch,color,i;
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double dx,dy,u,v,_u,_v,au,av;
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double theta=0;
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int frame=0;
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double scale=1.0;
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grsim_init();
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gr();
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// clear_screens();
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ram[DRAW_PAGE]=PAGE0;
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clear_bottom();
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ram[DRAW_PAGE]=PAGE1;
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clear_bottom();
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ram[DRAW_PAGE]=PAGE2;
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clear_bottom();
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// clear_bottom(PAGE0);
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// clear_bottom(PAGE1);
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// clear_bottom(PAGE2);
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// grsim_unrle(demo_rle,0x400);
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grsim_unrle(demo_rle,0xc00);
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// gr_copy_to_current(0xc00);
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// page_flip();
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// gr_copy_to_current(0xc00);
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// page_flip();
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ram[DRAW_PAGE]=PAGE0;
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while(1) {
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grsim_update();
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blah:
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ch=grsim_input();
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if (ch=='q') break;
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if (ch==0) goto blah;
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// ; -----------------
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// ; ROTOZOOM Théorie:
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// ; theta: angle de rotation
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// ; scale : coeff pour le zoom
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// ; xx et yy : coordonnées point écran
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// ; u et v : coordonnées du point texture
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// ; déplacement :
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// ; dx = cos(theta)*scale
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// ; dx = sin(theta)*scale
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// ; u = u + xx
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// ; v = v + yy
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// ; texture(u,v)->screen(x,y)
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// ;
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//; code:
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///;
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//; ; déplacement
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//; dx = cos(theta)*scale;
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//; dy = sin(theta)*scale;
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//;
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//; for(yy=0;yy<24;yy++) { // pour les 24 lignes
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//; _u = u; ; on sauve les coordonnées du premier pixel à afficher de la ligne
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//; _v = v; ;
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//; for(xx=0;xx<40;xx++) { // affichage d'une ligne horizontale (40 points)
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//; u = u + dx ; déplacement
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//; v = v + dy ; x et y
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//; text(u,v) - > screen(xx,yy)
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//; }
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//; u = _u - dy; // on se place sur le premier pixel de la prochaine ligne a afficher
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//; v = _v + dx;
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//; }
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//; theta++
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dx = cos(theta)*scale;
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dy = sin(theta)*scale;
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u=0;
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v=0;
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for(i=0;i<20;i++) {
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u=u-dx;
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v=v-dy;
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}
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v=40-v;
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for(yy=-20;yy<20;yy++) {
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/* save starting point */
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_u=u;
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_v=v;
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for(xx=-20;xx<20;xx++) {
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/* rotate in center of screen */
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au=u+20;
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av=v;//+20;
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// if ((au<0) || (au>39)) color=0;
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// else if ((av<0) || (av>39)) color=0;
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// else {
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color=scrn_page(au,av,PAGE2);
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// }
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if (
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((xx==-20) && (yy==-20)) ||
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((xx==0) && (yy==0)) ||
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((xx==19) && (yy==19))
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) {
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printf("%d,%d -> %0.2lf,%0.2lf\n",xx,yy,au,av);
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}
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color_equals(color);
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plot(xx+20,yy+20);
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u=u+dx;
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v=v+dy;
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}
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/* move on to next line */
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/* since we start in upper left, add dy */
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/* note: change sign for crazy effects */
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u=_u-dy;
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v=_v+dx;
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}
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theta+=(PI/4.0);
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// scale-=0.008;
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usleep(30000);
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frame++;
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/* reset */
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// if (frame==128) {
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// sleep(1);
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// theta=0;
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// scale=1.0;
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// frame=0;
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// }
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}
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return 0;
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}
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