diff options
| -rw-r--r-- | engines/cine/pal.cpp | 9 | ||||
| -rw-r--r-- | engines/cine/pal.h | 14 |
2 files changed, 23 insertions, 0 deletions
diff --git a/engines/cine/pal.cpp b/engines/cine/pal.cpp index 3341da39c5..ce26ae89b2 100644 --- a/engines/cine/pal.cpp +++ b/engines/cine/pal.cpp @@ -259,6 +259,15 @@ Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastI return output; } +Palette &Palette::saturatedAddNormalizedColor(Palette& output, byte firstIndex, byte lastIndex, signed rNormalized, signed gNormalized, signed bNormalized, signed dividend, signed denominator) { + assert(denominator != 0); + const signed r = _format.rMax() * rNormalized * dividend / denominator; + const signed g = _format.gMax() * gNormalized * dividend / denominator; + const signed b = _format.bMax() * bNormalized * dividend / denominator; + + return saturatedAddColor(output, firstIndex, lastIndex, r, g, b); +} + Palette &Palette::saturatedAddNormalizedGray(Palette& output, byte firstIndex, byte lastIndex, int grayDividend, int grayDenominator) { assert(grayDenominator != 0); const signed r = _format.rMax() * grayDividend / grayDenominator; diff --git a/engines/cine/pal.h b/engines/cine/pal.h index 47d45f7e76..030621a2f4 100644 --- a/engines/cine/pal.h +++ b/engines/cine/pal.h @@ -139,6 +139,20 @@ public: Palette &rotateRight(byte firstIndex, byte lastIndex); Palette &saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed r, signed g, signed b); + /*! \brief Saturated add a normalized RGB color to current palette's subset and save the modified colors in the given output palette. + * \param output The output palette (Only this palette is modified) + * \param firstIndex First color index of the palette's subset (Inclusive range) + * \param lastIndex Last color index of the palette's subset (Inclusive range) + * \param rNormalized The normalized red color component + * \param gNormalized The normalized green color component + * \param bNormalized The normalized blue color component + * \param dividend Dividend of the normalized color component values + * \param denominator Denominator of the normalized color component values + * \note The normalized color component multiplier value (i.e. in range [-1, +1]) is given as a fractional number + * so each input color component is multiplied by it and the color component's maximum (Specified by this palette's color format) + */ + Palette &saturatedAddNormalizedColor(Palette& output, byte firstIndex, byte lastIndex, signed rNormalized, signed gNormalized, signed bNormalized, signed dividend, signed denominator); + /*! \brief Saturated add a normalized gray value to current palette's subset and save the modified colors in the given output palette. * \param output The output palette (Only this palette is modified) * \param firstIndex First color index of the palette's subset (Inclusive range) |