mirror of https://github.com/Chlumsky/msdfgen.git
Wrap the library into a single header + CPP file pair
This commit is contained in:
Chlumsky
parent
ef8070786c
commit
321a7a9732
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msdfgen.h
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msdfgen.cpp
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build/
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cmake_minimum_required(VERSION 3.15)
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option(MSDFGEN_USE_VCPKG "Use vcpkg package manager to link project dependencies" ON)
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option(MSDFGEN_USE_FREETYPE "Build with the FreeType library" ON)
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if(MSDFGEN_USE_VCPKG AND MSDFGEN_USE_FREETYPE)
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# Make sure that vcpkg toolchain file is set
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if(NOT CMAKE_TOOLCHAIN_FILE)
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if(DEFINED ENV{VCPKG_ROOT})
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set(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake")
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else()
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message(SEND_ERROR "Vcpkg toolchain not configured. Either set VCPKG_ROOT environment variable or pass -DCMAKE_TOOLCHAIN_FILE=VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake to cmake")
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endif()
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endif()
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# Default to statically linked vcpkg triplet on Windows
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if(WIN32 AND NOT VCPKG_TARGET_TRIPLET AND NOT MSDFGEN_DYNAMIC_RUNTIME)
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if(CMAKE_GENERATOR_PLATFORM MATCHES "64$" AND NOT CMAKE_GENERATOR_PLATFORM STREQUAL "ARM64")
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set(VCPKG_TARGET_TRIPLET "x64-windows-static")
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elseif(CMAKE_GENERATOR_PLATFORM MATCHES "32$" OR CMAKE_GENERATOR_PLATFORM STREQUAL "x86")
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set(VCPKG_TARGET_TRIPLET "x86-windows-static")
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else()
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if(CMAKE_GENERATOR_PLATFORM)
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message(WARNING "Vcpkg triplet not explicitly specified and could not be deduced. Recommend using -DVCPKG_TARGET_TRIPLET=x64-windows-static or similar")
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else()
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message(WARNING "Vcpkg triplet not explicitly specified and could not be deduced. Recommend using -A to explicitly select platform (Win32 or x64)")
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endif()
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endif()
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endif()
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endif()
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project(msdfgen LANGUAGES CXX)
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if(MAX_WARNING_LEVEL)
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if (MSVC)
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add_compile_options(/W4)
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else()
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add_compile_options(-Wall -Wextra -Wpedantic)
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endif()
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endif()
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find_package(Python3 REQUIRED COMPONENTS Interpreter)
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if(MSDFGEN_USE_FREETYPE AND NOT TARGET Freetype::Freetype)
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find_package(Freetype REQUIRED)
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endif()
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execute_process(COMMAND ${Python3_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/generate.py")
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add_library(msdfgen "${CMAKE_CURRENT_SOURCE_DIR}/msdfgen.h" "${CMAKE_CURRENT_SOURCE_DIR}/msdfgen.cpp")
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set_property(TARGET msdfgen PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
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target_compile_features(msdfgen PUBLIC cxx_std_11)
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if(MSDFGEN_USE_FREETYPE)
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target_compile_definitions(msdfgen PUBLIC MSDFGEN_USE_FREETYPE)
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target_link_libraries(msdfgen PRIVATE Freetype::Freetype)
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endif()
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add_executable(msdfgen-test "${CMAKE_CURRENT_SOURCE_DIR}/test.cpp")
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set_property(TARGET msdfgen-test PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
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target_link_libraries(msdfgen-test PRIVATE msdfgen)
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set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT msdfgen-test)
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if(MSDFGEN_USE_FREETYPE)
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target_link_libraries(msdfgen-test PRIVATE Freetype::Freetype)
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endif()
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#!/usr/bin/env python3
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import os
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import re
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rootDir = os.path.join(os.path.dirname(__file__), '..')
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sourceList = [
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'core/arithmetics.hpp',
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'core/equation-solver.h',
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'core/equation-solver.cpp',
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'core/Vector2.h',
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'core/Vector2.cpp',
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'core/pixel-conversion.hpp',
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'core/BitmapRef.hpp',
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'core/Bitmap.h',
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'core/Bitmap.hpp',
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'core/Projection.h',
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'core/Projection.cpp',
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'core/SignedDistance.h',
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'core/SignedDistance.cpp',
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'core/Scanline.h',
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'core/Scanline.cpp',
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'core/EdgeColor.h',
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'core/edge-segments.h',
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'core/edge-segments.cpp',
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'core/EdgeHolder.h',
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'core/EdgeHolder.cpp',
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'core/Contour.h',
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'core/Contour.cpp',
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'core/Shape.h',
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'core/Shape.cpp',
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'core/bitmap-interpolation.hpp',
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'core/edge-coloring.h',
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'core/edge-coloring.cpp',
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'core/edge-selectors.h',
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'core/edge-selectors.cpp',
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'core/contour-combiners.h',
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'core/contour-combiners.cpp',
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'core/ShapeDistanceFinder.h',
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'core/ShapeDistanceFinder.hpp',
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'core/generator-config.h',
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'core/msdf-error-correction.h',
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'core/msdf-error-correction.cpp',
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'core/MSDFErrorCorrection.h',
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'core/MSDFErrorCorrection.cpp',
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'core/msdfgen.cpp',
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'ext/import-font.h',
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'ext/import-font.cpp',
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'ext/resolve-shape-geometry.h',
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'ext/resolve-shape-geometry.cpp',
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'msdfgen.h'
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]
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header = """
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#pragma once
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#ifndef _USE_MATH_DEFINES
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#define _USE_MATH_DEFINES
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#endif
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#include <cstddef>
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#include <cstdlib>
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#include <cstring>
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#include <cmath>
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#include <vector>
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"""
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source = """
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#include "msdfgen.h"
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#include <algorithm>
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#include <queue>
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#ifdef MSDFGEN_USE_FREETYPE
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_OUTLINE_H
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#ifndef MSDFGEN_DISABLE_VARIABLE_FONTS
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#include FT_MULTIPLE_MASTERS_H
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#endif
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#endif
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"""
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with open(os.path.join(rootDir, 'LICENSE.txt'), 'r') as file:
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license = file.read()
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license = '\n'.join([' * '+line for line in license.strip().split('\n')])
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for filename in sourceList:
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with open(os.path.join(rootDir, *filename.split('/')), 'r') as file:
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src = file.read()
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src = '\n'.join([line for line in src.split('\n') if not re.match(r'^\s*#(include\s.*|pragma\s+once)\s*$', line)])
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if filename.startswith('ext/import-font.'):
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src = '#ifdef MSDFGEN_USE_FREETYPE\n\n'+src+'\n\n#endif\n\n'
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if filename.endswith('.h') or filename.endswith('.hpp'):
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header += '\n\n'+src
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if filename.endswith('.cpp'):
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source += '\n\n'+src
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header = '\n'+re.sub(r'\n{3,}', '\n\n', re.sub(r'}\s*namespace\s+msdfgen\s*{', '', re.sub(r'\/\*[^\*].*?\*\/', '', header, flags=re.DOTALL))).strip()+'\n'
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source = '\n'+re.sub(r'\n{3,}', '\n\n', re.sub(r'}\s*namespace\s+msdfgen\s*{', '', re.sub(r'\/\*[^\*].*?\*\/', '', source, flags=re.DOTALL))).strip()+'\n'
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header = """
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/*
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* MULTI-CHANNEL SIGNED DISTANCE FIELD GENERATOR
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* ---------------------------------------------
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* A utility by Viktor Chlumsky, (c) 2014 - 2023
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* https://github.com/Chlumsky/msdfgen
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* Published under the MIT license
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*
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* The technique used to generate multi-channel distance fields in this code
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* was developed by Viktor Chlumsky in 2014 for his master's thesis,
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* "Shape Decomposition for Multi-Channel Distance Fields". It provides improved
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* quality of sharp corners in glyphs and other 2D shapes compared to monochrome
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* distance fields. To reconstruct an image of the shape, apply the median of three
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* operation on the triplet of sampled signed distance values.
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*
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*/
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"""+header
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source = """
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/*
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* MULTI-CHANNEL SIGNED DISTANCE FIELD GENERATOR
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* ---------------------------------------------
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* https://github.com/Chlumsky/msdfgen
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*
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"""+license+"""
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*
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*/
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"""+source
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with open(os.path.join(os.path.dirname(__file__), 'msdfgen.h'), 'w') as file:
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file.write(header)
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with open(os.path.join(os.path.dirname(__file__), 'msdfgen.cpp'), 'w') as file:
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file.write(source)
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#include <cstdio>
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#include "msdfgen.h"
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using namespace msdfgen;
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static bool saveRGBA(const char *filename, const BitmapConstRef<float, 4> &bitmap) {
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if (FILE *f = fopen(filename, "wb")) {
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char header[12];
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header[0] = 'R', header[1] = 'G', header[2] = 'B', header[3] = 'A';
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header[4] = char(bitmap.width>>24);
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header[5] = char(bitmap.width>>16);
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header[6] = char(bitmap.width>>8);
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header[7] = char(bitmap.width);
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header[8] = char(bitmap.height>>24);
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header[9] = char(bitmap.height>>16);
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header[10] = char(bitmap.height>>8);
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header[11] = char(bitmap.height);
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fwrite(header, 1, 12, f);
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Bitmap<byte, 4> byteBitmap(bitmap.width, bitmap.height);
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byte *d = (byte *) byteBitmap;
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for (const float *s = bitmap.pixels, *end = bitmap.pixels+4*bitmap.width*bitmap.height; s < end; ++d, ++s)
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*d = pixelFloatToByte(*s);
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fwrite((const byte *) byteBitmap, 1, 4*bitmap.width*bitmap.height, f);
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fclose(f);
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return true;
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}
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return false;
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}
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int main() {
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#ifdef MSDFGEN_USE_FREETYPE
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bool success = false;
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if (FreetypeHandle *ft = initializeFreetype()) {
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if (FontHandle *font = loadFont(ft, "C:\\Windows\\Fonts\\arialbd.ttf")) {
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Shape shape;
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if (loadGlyph(shape, font, 'A')) {
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shape.normalize();
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edgeColoringByDistance(shape, 3.0);
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Bitmap<float, 4> msdf(32, 32);
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generateMTSDF(msdf, shape, 4.0, 1.0, Vector2(4.0, 4.0));
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success = saveRGBA("output.rgba", msdf);
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}
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destroyFont(font);
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}
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deinitializeFreetype(ft);
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}
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return success ? 0 : 1;
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#else
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return 0;
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#endif
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}
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{
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"$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/master/docs/vcpkg.schema.json",
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"name": "msdfgen-all-in-one",
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"version": "1.10.0",
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"dependencies": [
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"freetype"
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]
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}
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