Smoke/divergence.c


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#ifdef G_OS_WIN32
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#endif


#include <rfftw.h>

#include "funcs.h"
#include "palette.h"

#include "divergence.h"


static int divergence_render = FALSE;

static int divergence_num_colors = PALETTE_MAXCOLORS;

static int divergence_colormap = PALETTE_BLACKWHITE;

static float divergence_alpha = 1.0f;

static fftw_real *divergence_frame;


void divergence_set_render(int render_divergence)
{
  divergence_render = render_divergence;
}

int divergence_get_render(void)
{
  return divergence_render;
}

void divergence_set_num_colors(int num_colors)
{
  divergence_num_colors = num_colors;
}

int divergence_get_num_colors(void)
{
  return divergence_num_colors;
}

void divergence_set_colormap(int colormap)
{
  divergence_colormap = colormap;
}

int divergence_get_colormap(void)
{
  return divergence_colormap;
}

void divergence_set_alpha(float alpha)
{
  divergence_alpha = alpha;
}

float divergence_get_alpha(void)
{
  return divergence_alpha;
}

void divergence_set_frame(fftw_real *frame)
{
  divergence_frame = frame;
}

fftw_real *divergence_get_frame(void)
{
  return divergence_frame;
}


struct color4f divergence_get_color(float value)
{
  struct color4f return_value;

  return_value = set_palette(divergence_colormap, value, divergence_num_colors);
  return_value.a = divergence_alpha;

  return return_value;
}