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[asimage] fix bug in rainbow palette selection #23725

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[asimage] fix bug in rainbow palette selection #23725

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20f467a
[asimage] fix bug in rainbow palette selection
linev Oct 15, 2026
3427f9c
[asimage] provide size constant for rainbow palette
linev Oct 16, 2026
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14 changes: 8 additions & 6 deletions graf2d/asimage/src/TASPaletteEditor.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -61,15 +61,17 @@ static const char *gFileTypes[] = {
nullptr, nullptr
};

static UShort_t gRedRainbow[12] = {
constexpr size_t kNRainbowElems = 10;

static UShort_t gRedRainbow[kNRainbowElems] = {
0x0000, 0x7000, 0x0000, 0x0000, 0x0000,
0xffff, 0xffff, 0x7000, 0x8000, 0xffff
};
static UShort_t gGreenRainbow[12] = {
static UShort_t gGreenRainbow[kNRainbowElems] = {
0x0000, 0x0000, 0x0000, 0xffff, 0xffff,
0xffff, 0x0000, 0x0000, 0x8000, 0xffff
};
static UShort_t gBlueRainbow[12] = {
static UShort_t gBlueRainbow[kNRainbowElems] = {
0x0000, 0x7000, 0xffff, 0xffff, 0x0000,
0x0000, 0x0000, 0x0000, 0xa000, 0xffff
};
Expand Down Expand Up @@ -687,9 +689,9 @@ void TASPaletteEditor::NewPalette(Long_t id)

@ferdymercury ferdymercury Oct 16, 2026

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on line 680 change to:

numPt = (id == 0 ? kNRainbowElems : 11) + 2;

switch (id) {
case 0: // rainbow
memcpy(newPalette->fColorRed + 1, gRedRainbow, 12 * sizeof(UShort_t));
memcpy(newPalette->fColorGreen + 1, gGreenRainbow, 12 * sizeof(UShort_t));
memcpy(newPalette->fColorBlue + 1, gBlueRainbow, 12 * sizeof(UShort_t));
memcpy(newPalette->fColorRed + 1, gRedRainbow, kNRainbowElems * sizeof(UShort_t));
memcpy(newPalette->fColorGreen + 1, gGreenRainbow, kNRainbowElems * sizeof(UShort_t));
memcpy(newPalette->fColorBlue + 1, gBlueRainbow, kNRainbowElems * sizeof(UShort_t));
break;

case 1: // gray
Expand Down
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