diff options
| -rw-r--r-- | doc/lua_api.txt | 7 | ||||
| -rw-r--r-- | src/client/tile.cpp | 53 |
2 files changed, 58 insertions, 2 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 9a1cb6bac..219882f46 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -419,6 +419,13 @@ the word "`alpha`", then each texture pixel will contain the RGB of `<color>` and the alpha of `<color>` multiplied by the alpha of the texture pixel. +#### `[multiply:<color>` +Multiplies texture colors with the given color. +`<color>` is specified as a `ColorString`. +Result is more like what you'd expect if you put a color on top of another +color. Meaning white surfaces get a lot of your new color while black parts don't +change very much. + Sounds ------ Only Ogg Vorbis files are supported. diff --git a/src/client/tile.cpp b/src/client/tile.cpp index 539c29445..fbc0f1709 100644 --- a/src/client/tile.cpp +++ b/src/client/tile.cpp @@ -555,7 +555,11 @@ static void blit_with_alpha_overlay(video::IImage *src, video::IImage *dst, // color alpha with the destination alpha. // Otherwise, any pixels that are not fully transparent get the color alpha. static void apply_colorize(video::IImage *dst, v2u32 dst_pos, v2u32 size, - video::SColor color, int ratio, bool keep_alpha); + const video::SColor &color, int ratio, bool keep_alpha); + +// paint a texture using the given color +static void apply_multiplication(video::IImage *dst, v2u32 dst_pos, v2u32 size, + const video::SColor &color); // Apply a mask to an image static void apply_mask(video::IImage *mask, video::IImage *dst, @@ -1657,6 +1661,30 @@ bool TextureSource::generateImagePart(std::string part_of_name, } } /* + [multiply:color + multiplys a given color to any pixel of an image + color = color as ColorString + */ + else if (str_starts_with(part_of_name, "[multiply:")) { + Strfnd sf(part_of_name); + sf.next(":"); + std::string color_str = sf.next(":"); + + if (baseimg == NULL) { + errorstream << "generateImagePart(): baseimg != NULL " + << "for part_of_name=\"" << part_of_name + << "\", cancelling." << std::endl; + return false; + } + + video::SColor color; + + if (!parseColorString(color_str, color, false)) + return false; + + apply_multiplication(baseimg, v2u32(0, 0), baseimg->getDimension(), color); + } + /* [colorize:color Overlays image with given color color = color as ColorString @@ -1960,7 +1988,7 @@ static void blit_with_interpolate_overlay(video::IImage *src, video::IImage *dst Apply color to destination */ static void apply_colorize(video::IImage *dst, v2u32 dst_pos, v2u32 size, - video::SColor color, int ratio, bool keep_alpha) + const video::SColor &color, int ratio, bool keep_alpha) { u32 alpha = color.getAlpha(); video::SColor dst_c; @@ -1995,6 +2023,27 @@ static void apply_colorize(video::IImage *dst, v2u32 dst_pos, v2u32 size, } /* + Apply color to destination +*/ +static void apply_multiplication(video::IImage *dst, v2u32 dst_pos, v2u32 size, + const video::SColor &color) +{ + video::SColor dst_c; + + for (u32 y = dst_pos.Y; y < dst_pos.Y + size.Y; y++) + for (u32 x = dst_pos.X; x < dst_pos.X + size.X; x++) { + dst_c = dst->getPixel(x, y); + dst_c.set( + dst_c.getAlpha(), + (dst_c.getRed() * color.getRed()) / 255, + (dst_c.getGreen() * color.getGreen()) / 255, + (dst_c.getBlue() * color.getBlue()) / 255 + ); + dst->setPixel(x, y, dst_c); + } +} + +/* Apply mask to destination */ static void apply_mask(video::IImage *mask, video::IImage *dst, |