Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
22 changed files
with
1,316 additions
and
44 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| #!/usr/bin/env python3 | ||
|
|
||
| # Colours for unpaved roads | ||
|
|
||
| # This reads some color variables from some .mss files and also reads | ||
| # symbols/unpaved/unpaved.svg and generates colourized versions of | ||
| # the unpaved pattern for all road types and saves them in the symbols/unpaved | ||
| # folder. Existing files of the same name are overwritten! | ||
| # | ||
| # This script produces patterns that perceptually have the same overall | ||
| # brightness as the original road color. Therefor, the pattern foreground | ||
| # is darker than the original color, and the pattern background lighter than | ||
| # the original color. This script does its very best, but the same overall | ||
| # brightness is not always possible (for example for white roads) and also | ||
| # depends on the monitor gammut on which the pattern is finally displayed. | ||
| # | ||
| # Usage: Call this script in the main directory of openstreetmap-carto | ||
| # without further parameters. | ||
| # | ||
| # Customize: | ||
| # You can customize this script by changing the first variables of in the main() | ||
| # function (color_names, file_names, darken, brighten_darken_ratio). | ||
|
|
||
| from colormath.color_objects import LabColor, sRGBColor | ||
| from colormath.color_conversions import convert_color | ||
|
|
||
| # def get_color_value_by_name(variable_name, file_names): | ||
| # | ||
| # Searches in MSS files for variable values with the given name. Returns | ||
| # the first value it finds. Only supports very basic syntax like: | ||
| # @test: 12; # Comment | ||
| # which would return "12". | ||
| # | ||
| # Paramaters: | ||
| # variable_name: the name of the variable for which we search the value | ||
| # file_names: list of files where we search for the variable value | ||
| # | ||
| # Return value: the variable value (if any) | ||
| def get_color_value_by_name(variable_name, file_names): | ||
| for files in file_names: | ||
| with open(files) as f: | ||
| for line in f: | ||
| if line.startswith("@" + variable_name + ":"): | ||
| temp = line.strip("@" + variable_name + ":").split(";")[0].strip() | ||
| # test if the value length is okay (#abc or #aabbcc) | ||
| if (len(temp) == 4) or (len(temp)== 7): | ||
| # remove the first character (#) | ||
| temp = temp[1:] | ||
| # expand value like #abc to #aabbcc | ||
| if len(temp) == 3: | ||
| temp = temp[0] + temp [0] + temp [1] + temp [1] + temp [2] + temp [2] | ||
| # make sure that the content is really a (lowercase) hex value | ||
| if all(c in set("0123456789abcdef") for c in temp): | ||
| # if so, return the hex value with a leading "#" | ||
| return ("#" + temp) | ||
|
|
||
| # Takes an RGB hex values, applies the indicated Lab lightness change and returns the result as RGB hex value again | ||
| # def change_lightness(base_color_rgb_hex, lightness_change): | ||
| # | ||
| # Changes the lightness of a given color. This function | ||
| # tries to do a perceptual transformation. | ||
| # | ||
| # Paramaters: | ||
| # base_color_rgb_hex: An RGB hex value like #1212ab | ||
| # lightness_change: A number (positive or negative), interpreted as change to the lightness component like in Lab perceptual color space (range: 0..100) | ||
| # | ||
| # Return value: The RGB hex value with the lightness change applied. If the lightness change leaves | ||
| # us with an out-of-gammut value, it is clipped to make sure to be within the RGB gammut. So the return | ||
| # value is guarantied to be always a valid RGB value. | ||
| def change_lightness(base_color_rgb_hex, lightness_change): | ||
| base_color_lab = convert_color(sRGBColor.new_from_rgb_hex(base_color_rgb_hex), LabColor) | ||
| new_color_lab = LabColor( | ||
| base_color_lab.lab_l + lightness_change, # This value might be out of gammut and therefor invalid | ||
| base_color_lab.lab_a, | ||
| base_color_lab.lab_b, | ||
| base_color_lab.observer, | ||
| base_color_lab.illuminant) | ||
| new_color_rgb = convert_color(new_color_lab, sRGBColor) # This value might be out of gammut and therefor invalid | ||
| # use the "clamped" values which means they are within the gammut and therefor valid | ||
| new_color_rgb_clamped = sRGBColor( | ||
| new_color_rgb.clamped_rgb_r, | ||
| new_color_rgb.clamped_rgb_g, | ||
| new_color_rgb.clamped_rgb_b) | ||
| return new_color_rgb_clamped.get_rgb_hex() | ||
|
|
||
| def main(): | ||
|
|
||
| # List of names of color variables in mss code for which we will generate patterns | ||
| color_names = { | ||
| 'motorway-low-zoom', | ||
| 'trunk-low-zoom', | ||
| 'primary-low-zoom', | ||
| 'motorway-fill', | ||
| 'trunk-fill', | ||
| 'primary-fill', | ||
| 'secondary-fill', | ||
| 'platform-fill', | ||
| 'aeroway-fill', | ||
| 'road-fill', | ||
| 'pedestrian-fill', | ||
| 'living-street-fill', | ||
| 'raceway-fill', | ||
| 'residential-fill' | ||
| } | ||
|
|
||
| # List of names of mss files in which we search for color variables | ||
| file_names = { | ||
| 'style/roads.mss', | ||
| 'style/road-colors-generated.mss' | ||
| } | ||
|
|
||
| # The value by which the original color is darkened for the pattern foreground | ||
| # This value should always be negative. | ||
| darken = -60 | ||
|
|
||
| # The pattern foreground occupies less space than the background. So lightening | ||
| # the background has to be less intense than darkening the foreground. This | ||
| # value is multiplied with the negative value of "darken" to get a value for | ||
| # "brighten", so brighten_darken_ration must also be negative to make sure | ||
| # the "brighten" result is positive. This value should (only) be changed when | ||
| # the pattern itself is changed. | ||
| brighten_darken_ratio = -0.065 | ||
|
|
||
| # actual code | ||
| for color_name in color_names: | ||
| print("\nColor name: " + color_name) | ||
| original_color_value = get_color_value_by_name(color_name, file_names) | ||
| print("Plain color: " + original_color_value) | ||
| pattern_colors = [change_lightness(original_color_value, darken), | ||
| change_lightness(original_color_value, darken * brighten_darken_ratio)] | ||
| print("Colors for pattern: " + str(pattern_colors)) | ||
| if pattern_colors: | ||
| with open('symbols/unpaved/unpaved.svg', 'rt') as fin: | ||
| with open('symbols/unpaved/unpaved_' + color_name + '.svg', 'wt') as fout: | ||
| for line in fin: | ||
| temp = line | ||
| temp = temp.replace('#0000ff', pattern_colors[0]) | ||
| temp = temp.replace('fill:none', 'fill:' + pattern_colors[1]) | ||
| fout.write(temp) | ||
| print("Pattern file: " + 'symbols/unpaved/unpaved_' + color_name + '.svg') | ||
|
|
||
| if __name__ == "__main__": | ||
| main() |
Oops, something went wrong.