diff options
Diffstat (limited to 'src/post/goom/ifs_display.c')
| -rw-r--r-- | src/post/goom/ifs_display.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/post/goom/ifs_display.c b/src/post/goom/ifs_display.c new file mode 100644 index 000000000..94d79b7eb --- /dev/null +++ b/src/post/goom/ifs_display.c @@ -0,0 +1,216 @@ +#include <stdlib.h> +#include "ifs.h" + +#define DRAWMETHOD_NORMAL data[pos] = couleur + +#define DRAWMETHOD_PLUS(x) \ +{\ + int tra=0,i=0;\ + unsigned char *bra = (unsigned char*)&back[pos];\ + unsigned char *dra = (unsigned char*)&data[pos];\ + unsigned char *cra = (unsigned char*)&couleur;\ + for (;i<4;i++) {\ + tra = *cra >> x;\ + tra += *bra;\ + if (tra>255) tra=255;\ + *dra = tra;\ + ++dra;++cra;++bra;\ + }\ +} + +#define DRAWMETHOD_OR data[pos]|=couleur + +#define DRAWMETHOD_DEMI data[pos]=((back[pos]&0xfefefefe) + (couleur & 0xfefefefe)) >> 1 + +#define DRAWMETHOD(x) {DRAWMETHOD_DEMI;DRAWMETHOD_PLUS(x);} + +void ifs_update (guint32 *data, guint32 *back, int width, int height, int increment) +{ + static int couleur = 0xc0c0c0c0; + static int v[4] = {2,4,3,2}; + static int col[4] = {2,4,3,2}; +#define MOD_MER 0 +#define MOD_FEU 1 +#define MOD_MERVER 2 + static int mode = MOD_MERVER; + static int justChanged = 0; + static int cycle = 0; + int cycle10; + + int nbpt; + IFSPoint *points; + int i; + + points = draw_ifs (&nbpt); + + cycle ++; + if (cycle < 40) { + cycle10 = cycle / 10; + for (i = 0; i < nbpt; i+=increment) { + int x = (int)points[i].x & 0x7fffffff; + int y = (int)points[i].y & 0x7fffffff; + if ((x < width) && (y < height)) { + int pos = x + (int)(y * width); + DRAWMETHOD(cycle10); + } + } + } + else { + cycle10 = 7 - cycle / 10; + for (i = 0; i < nbpt; i+=increment) { + int x = (int)points[i].x & 0x7fffffff; + int y = (int)points[i].y & 0x7fffffff; + if ((x < width) && (y < height)) { + int pos = x + (int)(y * width); + DRAWMETHOD(cycle10); + } + } + if (cycle >= 79) + cycle = 0; + } + + + justChanged --; + + col[ALPHA] = couleur >> (ALPHA*8) & 0xff; + col[BLEU] = couleur >> (BLEU*8) & 0xff; + col[VERT] = couleur >> (VERT*8) & 0xff; + col[ROUGE] = couleur >> (ROUGE*8) & 0xff; + + if (mode == MOD_MER) { + col[BLEU] += v[BLEU]; + if (col[BLEU]>255) { + col[BLEU]=255; v[BLEU] = - (rand () % 4) - 1; + } + if (col[BLEU]<32) { + col[BLEU]=32; v[BLEU] = (rand () % 4) + 1; + } + + col[VERT] += v[VERT]; + if (col[VERT]>200) { + col[VERT]=200; v[VERT] = - (rand () % 3) - 2; + } + if (col[VERT]>col[BLEU]) { + col[VERT]=col[BLEU]; v[VERT] = v[BLEU]; + } + if (col[VERT]<32) { + col[VERT]=32; v[VERT] = (rand () % 3) + 2; + } + + col[ROUGE] += v[ROUGE]; + if (col[ROUGE]>64) { + col[ROUGE]=64; v[ROUGE] = - (rand () % 4) - 1; + } + if (col[ROUGE]<0) { + col[ROUGE]=0; v[ROUGE] = (rand () % 4) + 1; + } + + col[ALPHA] += v[ALPHA]; + if (col[ALPHA]>0) { + col[ALPHA]=0; v[ALPHA] = - (rand () % 4) - 1; + } + if (col[ALPHA]<0) { + col[ALPHA]=0; v[ALPHA] = (rand () % 4) + 1; + } + + if (((col [VERT] > 32) && (col[ROUGE]<col[VERT] + 40) && (col[VERT]<col[ROUGE] + 20) && (col [BLEU] < 64) + && (rand () % 20 == 0)) && (justChanged < 0)) { + mode = rand()%3?MOD_FEU:MOD_MERVER; + justChanged = 250; + } + } + else if (mode == MOD_MERVER) { + col[BLEU] += v[BLEU]; + if (col[BLEU]>128) { + col[BLEU]=128; v[BLEU] = - (rand () % 4) - 1; + } + if (col[BLEU]<16) { + col[BLEU]=16; v[BLEU] = (rand () % 4) + 1; + } + + col[VERT] += v[VERT]; + if (col[VERT]>200) { + col[VERT]=200; v[VERT] = - (rand () % 3) - 2; + } + if (col[VERT]>col[ALPHA]) { + col[VERT]=col[ALPHA]; v[VERT] = v[ALPHA]; + } + if (col[VERT]<32) { + col[VERT]=32; v[VERT] = (rand () % 3) + 2; + } + + col[ROUGE] += v[ROUGE]; + if (col[ROUGE]>128) { + col[ROUGE]=128; v[ROUGE] = - (rand () % 4) - 1; + } + if (col[ROUGE]<0) { + col[ROUGE]=0; v[ROUGE] = (rand () % 4) + 1; + } + + col[ALPHA] += v[ALPHA]; + if (col[ALPHA]>255) { + col[ALPHA]=255; v[ALPHA] = - (rand () % 4) - 1; + } + if (col[ALPHA]<0) { + col[ALPHA]=0; v[ALPHA] = (rand () % 4) + 1; + } + + if (((col [VERT] > 32) && (col[ROUGE]<col[VERT] + 40) && (col[VERT]<col[ROUGE] + 20) && (col [BLEU] < 64) + && (rand () % 20 == 0)) && (justChanged < 0)) { + mode = rand()%3?MOD_FEU:MOD_MER; + justChanged = 250; + } + } + else if (mode == MOD_FEU) { + + col[BLEU] += v[BLEU]; + if (col[BLEU]>64) { + col[BLEU]=64; v[BLEU] = - (rand () % 4) - 1; + } + if (col[BLEU]<0) { + col[BLEU]=0; v[BLEU] = (rand () % 4) + 1; + } + + col[VERT] += v[VERT]; + if (col[VERT]>200) { + col[VERT]=200; v[VERT] = - (rand () % 3) - 2; + } + if (col[VERT]>col[ROUGE] + 20) { + col[VERT]=col[ROUGE] + 20; v[VERT] = - (rand () % 3) - 2; + v[ROUGE] = (rand () % 4) + 1; v[BLEU] = (rand () % 4) + 1; + } + if (col[VERT]<0) { + col[VERT]=0; v[VERT] = (rand () % 3) + 2; + } + + col[ROUGE] += v[ROUGE]; + if (col[ROUGE]>255) { + col[ROUGE]=255; v[ROUGE] = - (rand () % 4) - 1; + } + if (col[ROUGE]>col[VERT]+40) { + col[ROUGE]=col[VERT]+40; v[ROUGE] = - (rand () % 4) - 1; + } + if (col[ROUGE]<0) { + col[ROUGE]=0; v[ROUGE] = (rand () % 4) + 1; + } + + col[ALPHA] += v[ALPHA]; + if (col[ALPHA]>0) { + col[ALPHA]=0; v[ALPHA] = - (rand () % 4) - 1; + } + if (col[ALPHA]<0) { + col[ALPHA]=0; v[ALPHA] = (rand () % 4) + 1; + } + + if (((col [ROUGE] < 64) && (col [VERT] > 32) && (col [VERT] < col [BLEU]) && (col [BLEU] > 32) + && (rand () % 20 == 0)) && (justChanged < 0)) { + mode = rand () % 2 ? MOD_MER : MOD_MERVER; + justChanged = 250; + } + } + + couleur = (col[ALPHA]<<(ALPHA*8)) + |(col[BLEU]<<(BLEU*8)) + |(col[VERT]<<(VERT*8)) + |(col[ROUGE]<<(ROUGE*8)); +} |