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The-Powder-Toy/src/simulation/elements/FILT.cpp

151 lines
3.3 KiB
C++

#include "simulation/ElementCommon.h"
#include "FILT.h"
static int graphics(GRAPHICS_FUNC_ARGS);
static void create(ELEMENT_CREATE_FUNC_ARGS);
void Element::Element_FILT()
{
Identifier = "DEFAULT_PT_FILT";
Name = "FILT";
Colour = 0x000056_rgb;
MenuVisible = 1;
MenuSection = SC_SOLIDS;
Enabled = 1;
Advection = 0.0f;
AirDrag = 0.00f * CFDS;
AirLoss = 0.90f;
Loss = 0.00f;
Collision = 0.0f;
Gravity = 0.0f;
Diffusion = 0.00f;
HotAir = 0.000f * CFDS;
Falldown = 0;
Flammable = 0;
Explosive = 0;
Meltable = 0;
Hardness = 1;
Weight = 100;
HeatConduct = 251;
Description = "Filter for photons, changes the color.";
Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_NOAMBHEAT | PROP_LIFE_DEC;
LowPressure = IPL;
LowPressureTransition = NT;
HighPressure = IPH;
HighPressureTransition = NT;
LowTemperature = ITL;
LowTemperatureTransition = NT;
HighTemperature = ITH;
HighTemperatureTransition = NT;
Graphics = &graphics;
Create = &create;
}
static int graphics(GRAPHICS_FUNC_ARGS)
{
int x, wl = Element_FILT_getWavelengths(cpart);
*colg = 0;
*colb = 0;
*colr = 0;
for (x=0; x<12; x++) {
*colr += (wl >> (x+18)) & 1;
*colb += (wl >> x) & 1;
}
for (x=0; x<12; x++)
*colg += (wl >> (x+9)) & 1;
x = 624/(*colr+*colg+*colb+1);
if (cpart->life>0 && cpart->life<=4)
*cola = 127+cpart->life*30;
else
*cola = 127;
*colr *= x;
*colg *= x;
*colb *= x;
*pixel_mode &= ~PMODE;
*pixel_mode |= PMODE_BLEND;
return 0;
}
static void create(ELEMENT_CREATE_FUNC_ARGS)
{
sim->parts[i].tmp = v;
}
// Returns the wavelengths in a particle after FILT interacts with it (e.g. a photon)
// cpart is the FILT particle, origWl the original wavelengths in the interacting particle
int Element_FILT_interactWavelengths(Simulation *sim, Particle* cpart, int origWl)
{
const int mask = 0x3FFFFFFF;
int filtWl = Element_FILT_getWavelengths(cpart);
switch (cpart->tmp)
{
case 0:
return filtWl; //Assign Colour
case 1:
return origWl & filtWl; //Filter Colour
case 2:
return origWl | filtWl; //Add Colour
case 3:
return origWl & (~filtWl); //Subtract colour of filt from colour of photon
case 4:
{
int shift = int((cpart->temp-273.0f)*0.025f);
if (shift<=0) shift = 1;
return (origWl << shift) & mask; // red shift
}
case 5:
{
int shift = int((cpart->temp-273.0f)*0.025f);
if (shift<=0) shift = 1;
return (origWl >> shift) & mask; // blue shift
}
case 6:
return origWl; // No change
case 7:
return origWl ^ filtWl; // XOR colours
case 8:
return (~origWl) & mask; // Invert colours
case 9:
{
int t1 = (origWl & 0x0000FF) + sim->rng.between(-2, 2);
int t2 = ((origWl & 0x00FF00)>>8) + sim->rng.between(-2, 2);
int t3 = ((origWl & 0xFF0000)>>16) + sim->rng.between(-2, 2);
return (origWl & 0xFF000000) | (t3<<16) | (t2<<8) | t1;
}
case 10:
{
long long int lsb = filtWl & (-filtWl);
return (origWl * lsb) & 0x3FFFFFFF; //red shift
}
case 11:
{
long long int lsb = filtWl & (-filtWl);
return (origWl / lsb) & 0x3FFFFFFF; // blue shift
}
default:
return filtWl;
}
}
int Element_FILT_getWavelengths(const Particle* cpart)
{
if (cpart->ctype&0x3FFFFFFF)
{
return cpart->ctype;
}
else
{
int temp_bin = (int)((cpart->temp-273.0f)*0.025f);
if (temp_bin < 0) temp_bin = 0;
if (temp_bin > 25) temp_bin = 25;
return (0x1F << temp_bin);
}
}