CINE: Turn some methods into const methods

svn-id: r44100

2 files changed, 6 insertions, 6 deletions

diff --git a/engines/cine/pal.cpp b/engines/cine/pal.cpp
index 01a7c20d25..60c58ac27c 100644
--- a/engines/cine/pal.cpp
+++ b/engines/cine/pal.cpp
@@ -209,7 +209,7 @@ void Palette::setColorFormat(const Graphics::PixelFormat format) {
 }
 
 // a.k.a. transformPaletteRange
-Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed r, signed g, signed b) {
+Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed r, signed g, signed b) const {
 	assert(firstIndex < colorCount() && lastIndex < colorCount());
 	assert(firstIndex < output.colorCount() && lastIndex < output.colorCount());
 	assert(output.colorFormat() == colorFormat());
@@ -232,7 +232,7 @@ Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastI
 	return output;
 }
 
-Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed rSource, signed gSource, signed bSource, const Graphics::PixelFormat &sourceFormat) {
+Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed rSource, signed gSource, signed bSource, const Graphics::PixelFormat &sourceFormat) const {
 	// Convert the source color to the internal color format ensuring that no divide by zero will happen
 	const signed r = ((signed) _format.rMax()) * rSource / MAX<int>(sourceFormat.rMax(), 1);
 	const signed g = ((signed) _format.gMax()) * gSource / MAX<int>(sourceFormat.gMax(), 1);
@@ -241,7 +241,7 @@ Palette &Palette::saturatedAddColor(Palette& output, byte firstIndex, byte lastI
 	return saturatedAddColor(output, firstIndex, lastIndex, r, g, b);
 }
 
-Palette &Palette::saturatedAddNormalizedGray(Palette& output, byte firstIndex, byte lastIndex, int grayDividend, int grayDenominator) {
+Palette &Palette::saturatedAddNormalizedGray(Palette& output, byte firstIndex, byte lastIndex, int grayDividend, int grayDenominator) const {
 	assert(grayDenominator != 0);
 	const signed r = ((signed) _format.rMax()) * grayDividend / grayDenominator;
 	const signed g = ((signed) _format.gMax()) * grayDividend / grayDenominator;
diff --git a/engines/cine/pal.h b/engines/cine/pal.h
index 60d39a0eae..d0621b4d9f 100644
--- a/engines/cine/pal.h
+++ b/engines/cine/pal.h
@@ -132,7 +132,7 @@ public:
 	 * \param rotationAmount Amount to rotate the sub-palette to the right. Only values 0 and 1 are currently supported!
 	 */
 	Palette &rotateRight(byte firstIndex, byte lastIndex, signed rotationAmount = 1);
-	Palette &saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed r, signed g, signed b);
+	Palette &saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed r, signed g, signed b) const;
 
 	/*! \brief Saturated add an RGB color in given color format 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)
@@ -145,7 +145,7 @@ public:
 	 * \note This function basically converts the given color to the palette's internal color format
 	 * and adds that using the normal saturatedAddColor-function.
 	 */
-	Palette &saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed rSource, signed gSource, signed bSource, const Graphics::PixelFormat &sourceFormat);
+	Palette &saturatedAddColor(Palette& output, byte firstIndex, byte lastIndex, signed rSource, signed gSource, signed bSource, const Graphics::PixelFormat &sourceFormat) const;
 
 	/*! \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)
@@ -156,7 +156,7 @@ public:
 	 * \note The normalized gray value (i.e. in range [-1, +1]) is given as a fractional number
 	 * (i.e. the normalized gray value is calculated by dividing grayDividend by grayDenominator).
 	 */
-	Palette &saturatedAddNormalizedGray(Palette& output, byte firstIndex, byte lastIndex, signed grayDividend, signed grayDenominator);
+	Palette &saturatedAddNormalizedGray(Palette& output, byte firstIndex, byte lastIndex, signed grayDividend, signed grayDenominator) const;
 
 	bool empty() const;
 	uint colorCount() const;