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#include <config.h>
#include <math.h>
#include "renderer.h"
#include "compute.h"
#define PI 3.14159
t_complex _inf_fct(InfinitePrivate *priv, t_complex a,int n,int p1,int p2) //p1 et p2:0-4
{
t_complex b;
float fact;
float an;
float circle_size;
float speed;
float co,si;
a.x-=priv->plugwidth/2;
a.y-=priv->plugheight/2;
switch (n) {
case 0:
an=0.025*(p1-2)+0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.25;
speed=2000+p2*500;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
fact=-(sqrt(b.x*b.x+b.y*b.y)-circle_size)/speed+1;
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
case 1:
an=0.015*(p1-2)+0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.45;
speed=4000+p2*1000;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
fact=(sqrt(b.x*b.x+b.y*b.y)-circle_size)/speed+1;
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
case 2:
an=0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.25;
speed=400+p2*100;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
fact=-(sqrt(b.x*b.x+b.y*b.y)-circle_size)/speed+1;
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
case 3:
an=(sin(sqrt(a.x*a.x+a.y*a.y)/20)/20)+0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.25;
speed=4000;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
fact=-(sqrt(b.x*b.x+b.y*b.y)-circle_size)/speed+1;
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
case 4:
an=0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.25;
speed=sin(sqrt(a.x*a.x+a.y*a.y)/5)*3000+4000;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
fact=-(sqrt(b.x*b.x+b.y*b.y)-circle_size)/speed+1;
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
case 5:
b.x=a.x*1.02;
b.y=a.y*1.02;
break;
case 6:
an=0.002;
co=cos(an);
si=sin(an);
circle_size=priv->plugheight*0.25;
fact=1+cos(atan(a.x/(a.y+0.00001))*6)*0.02;
b.x=(co*a.x-si*a.y);
b.y=(si*a.x+co*a.y);
b.x=(b.x*fact);
b.y=(b.y*fact);
break;
}
b.x+=priv->plugwidth/2;
b.y+=priv->plugheight/2;
if (b.x<0)
b.x=0;
if (b.y<0)
b.y=0;
if (b.x>priv->plugwidth-1)
b.x=priv->plugwidth-1;
if (b.y>priv->plugheight-1)
b.y=priv->plugheight-1;
return b;
}
void _inf_generate_sector(InfinitePrivate *priv, int g,int f,int p1,int p2,int debut,int step,t_interpol* vector_field)
{
int fin=debut+step;
const int prop_transmitted=249;
const int b_add=g*priv->plugwidth*priv->plugheight;
t_coord c;
if (fin>priv->plugheight)
fin=priv->plugheight;
for (c.y=debut;c.y<fin;c.y++)
for (c.x=0;c.x<priv->plugwidth;c.x++) {
t_complex a;
float fpy;
int rw,lw,add;
uint32_t w1,w2,w3,w4;
uint32_t x,y;
a.x=(float)c.x;
a.y=(float)c.y;
a=_inf_fct(priv, a,f,p1,p2);
add=c.x+c.y*priv->plugwidth;
x=(int)(a.x);
y=(int)(a.y);
vector_field[b_add+add].coord=(x<<16)|y;
fpy=a.y-floor(a.y);
rw=(int)((a.x-floor(a.x))*prop_transmitted);
lw=prop_transmitted-rw;
w4=(int)(fpy*rw);
w2=rw-w4;
w3=(int)(fpy*lw);
w1=lw-w3;
vector_field[b_add+add].weight=(w1<<24)|(w2<<16)|(w3<<8)|w4;
}
}
void _inf_generate_vector_field(InfinitePrivate *priv, t_interpol* vector_field)
{
int f;
int i,p1,p2;
for (f=0;f<NB_FCT;f++) {
p1=2;
p2=2;
for (i=0;i<priv->plugheight;i+=10)
_inf_generate_sector(priv, f,f,p1,p2,i,10,vector_field);
}
}
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