void interpolate_cmap(flam3_palette cmap, double blend,
int index0, double hue0, int index1, double hue1) {
flam3_palette p0,p1;
int i, j;
flam3_get_palette(index0, p0, hue0);
flam3_get_palette(index1, p1, hue1);
for (i = 0; i < 256; i++) {
double t[5], s[5];
rgb2hsv(p0[i].color, s);
rgb2hsv(p1[i].color, t);
s[3] = p0[i].color[3];
t[3] = p1[i].color[3];
s[4] = p0[i].index;
t[4] = p1[i].index;
for (j = 0; j < 5; j++)
t[j] = ((1.0-blend) * s[j]) + (blend * t[j]);
hsv2rgb(t, cmap[i].color);
cmap[i].color[3] = t[3];
cmap[i].index = t[4];
}
}
void PaletteEditor::buildPaletteSelector()
{
// only do this once, but it takes a while, so only when asked
static bool built = false;
if (built) return;
built = true;
logInfo("PaletteEditor::buildPaletteSelector : generating palettes");
QSize s = m_palettesView->iconSize();
for (int n = 0 ; n < PaletteCount ; n++)
{
flam3_palette p;
flam3_get_palette(n, p, 0.0);
QImage palette(s.width(), s.height(), QImage::Format_RGB32);
QPainter painter(&palette);
for (int i = 0 ; i < 256 ; i++)
{
painter.setPen(QColor::fromRgbF(p[i].color[0], p[i].color[1], p[i].color[2]));
painter.drawLine(i, 0, i, s.height());
}
m_flamPalettes.addGradient(QPixmap::fromImage(palette));
}
if (!m_lastBrowseDir.isEmpty())
{
// restore p_stops for the initial call to resetGradientAction
GradientStops tmp(p_stops);
openGradientAction(true);
p_stops = tmp;
}
}
void PaletteEditor::loadPalette(int palette_idx)
{
flam3_get_palette(palette_idx, p, 0.0);
}
