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-rw-r--r--src/resources/dyepalette.cpp54
1 files changed, 28 insertions, 26 deletions
diff --git a/src/resources/dyepalette.cpp b/src/resources/dyepalette.cpp
index 5ebbdf626..4ff93c1f1 100644
--- a/src/resources/dyepalette.cpp
+++ b/src/resources/dyepalette.cpp
@@ -127,9 +127,10 @@ void DyePalette::getColor(const unsigned int intensity,
j = 0;
// Get the exact color if any, the next color otherwise.
- const int r2 = mColors[j].value[0];
- const int g2 = mColors[j].value[1];
- const int b2 = mColors[j].value[2];
+ const DyeColor &colorJ = mColors[j];
+ const int r2 = colorJ.value[0];
+ const int g2 = colorJ.value[1];
+ const int b2 = colorJ.value[2];
if (t == 0)
{
@@ -141,18 +142,22 @@ void DyePalette::getColor(const unsigned int intensity,
}
// Get the previous color. First color is implicitly black.
- int r1 = 0, g1 = 0, b1 = 0;
if (i > 0 && i < last + 1)
{
- r1 = mColors[i - 1].value[0];
- g1 = mColors[i - 1].value[1];
- b1 = mColors[i - 1].value[2];
+ const DyeColor &colorI = mColors[i - 1];
+ const int t2 = 255 - t;
+ // Perform a linear interpolation.
+ color[0] = (t2 * colorI.value[0] + t * r2) / 255;
+ color[1] = (t2 * colorI.value[1] + t * g2) / 255;
+ color[2] = (t2 * colorI.value[2] + t * b2) / 255;
+ }
+ else
+ {
+ // Perform a linear interpolation.
+ color[0] = (t * r2) / 255;
+ color[1] = (t * g2) / 255;
+ color[2] = (t * b2) / 255;
}
-
- // Perform a linear interpolation.
- color[0] = ((255 - t) * r1 + t * r2) / 255;
- color[1] = ((255 - t) * g1 + t * g2) / 255;
- color[2] = ((255 - t) * b1 + t * b2) / 255;
}
void DyePalette::getColor(double intensity, int (&color)[3]) const
@@ -173,31 +178,28 @@ void DyePalette::getColor(double intensity, int (&color)[3]) const
// Color indices
const int i = static_cast<int>(floor(intensity));
const int j = static_cast<int>(ceil(intensity));
+ const DyeColor &colorI = mColors[i];
if (i == j)
{
// Exact color.
- color[0] = mColors[i].value[0];
- color[1] = mColors[i].value[1];
- color[2] = mColors[i].value[2];
+ color[0] = colorI.value[0];
+ color[1] = colorI.value[1];
+ color[2] = colorI.value[2];
return;
}
intensity -= i;
const double rest = 1 - intensity;
-
- // Get the colors
- const int r1 = mColors[i].value[0];
- const int g1 = mColors[i].value[1];
- const int b1 = mColors[i].value[2];
- const int r2 = mColors[j].value[0];
- const int g2 = mColors[j].value[1];
- const int b2 = mColors[j].value[2];
+ const DyeColor &colorJ = mColors[j];
// Perform the interpolation.
- color[0] = static_cast<int>(rest * r1 + intensity * r2);
- color[1] = static_cast<int>(rest * g1 + intensity * g2);
- color[2] = static_cast<int>(rest * b1 + intensity * b2);
+ color[0] = static_cast<int>(rest * colorI.value[0] +
+ intensity * colorJ.value[0]);
+ color[1] = static_cast<int>(rest * colorI.value[1] +
+ intensity * colorJ.value[1]);
+ color[2] = static_cast<int>(rest * colorI.value[2] +
+ intensity * colorJ.value[2]);
}
void DyePalette::replaceSColor(uint32_t *restrict pixels,