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/*
* MULTI-CHANNEL SIGNED DISTANCE FIELD GENERATOR - standalone console program
* --------------------------------------------------------------------------
* A utility by Viktor Chlumsky, (c) 2014 - 2025
*
*/
#ifdef MSDFGEN_STANDALONE
#ifndef _USE_MATH_DEFINES
#define _USE_MATH_DEFINES
#endif
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <string>
#include "msdfgen.h"
#ifdef MSDFGEN_EXTENSIONS
#include "msdfgen-ext.h"
#endif
#include "core/ShapeDistanceFinder.h"
#define SDF_ERROR_ESTIMATE_PRECISION 19
#define DEFAULT_ANGLE_THRESHOLD 3.
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
#define DEFAULT_IMAGE_EXTENSION "png"
#define SAVE_DEFAULT_IMAGE_FORMAT savePng
#else
#define DEFAULT_IMAGE_EXTENSION "tiff"
#define SAVE_DEFAULT_IMAGE_FORMAT saveTiff
#endif
using namespace msdfgen;
enum Format {
AUTO,
PNG,
BMP,
TIFF,
RGBA,
FL32,
TEXT,
TEXT_FLOAT,
BINARY,
BINARY_FLOAT,
BINARY_FLOAT_BE
};
static bool is8bitFormat(Format format) {
return format == PNG || format == BMP || format == RGBA || format == TEXT || format == BINARY;
}
static char toupper(char c) {
return c >= 'a' && c <= 'z' ? c-'a'+'A' : c;
}
static bool parseUnsigned(unsigned &value, const char *arg) {
char *end = NULL;
value = (unsigned) strtoul(arg, &end, 10);
return end > arg && !*end;
}
static bool parseUnsignedDecOrHex(unsigned &value, const char *arg) {
char *end = NULL;
if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) {
arg += 2;
value = (unsigned) strtoul(arg, &end, 16);
} else
value = (unsigned) strtoul(arg, &end, 10);
return end > arg && !*end;
}
static bool parseUnsignedLL(unsigned long long &value, const char *arg) {
if (*arg >= '0' && *arg <= '9') {
value = 0;
do {
value = 10*value+(*arg++-'0');
} while (*arg >= '0' && *arg <= '9');
return !*arg;
}
return false;
}
static bool parseDouble(double &value, const char *arg) {
char *end = NULL;
value = strtod(arg, &end);
return end > arg && !*end;
}
static bool parseAngle(double &value, const char *arg) {
char *end = NULL;
value = strtod(arg, &end);
if (end > arg) {
arg = end;
if (*arg == 'd' || *arg == 'D') {
++arg;
value *= M_PI/180;
}
return !*arg;
}
return false;
}
static void parseColoring(Shape &shape, const char *edgeAssignment) {
unsigned c = 0, e = 0;
if (shape.contours.size() < c) return;
Contour *contour = &shape.contours[c];
bool change = false;
bool clear = true;
for (const char *in = edgeAssignment; *in; ++in) {
switch (*in) {
case ',':
if (change)
++e;
if (clear)
while (e < contour->edges.size()) {
contour->edges[e]->color = WHITE;
++e;
}
++c, e = 0;
if (shape.contours.size() <= c) return;
contour = &shape.contours[c];
change = false;
clear = true;
break;
case '?':
clear = false;
break;
case 'C': case 'M': case 'W': case 'Y': case 'c': case 'm': case 'w': case 'y':
if (change) {
++e;
change = false;
}
if (e < contour->edges.size()) {
contour->edges[e]->color = EdgeColor(
(*in == 'C' || *in == 'c')*CYAN|
(*in == 'M' || *in == 'm')*MAGENTA|
(*in == 'Y' || *in == 'y')*YELLOW|
(*in == 'W' || *in == 'w')*WHITE);
change = true;
}
break;
}
}
}
#ifdef MSDFGEN_EXTENSIONS
static bool parseUnicode(unicode_t &unicode, const char *arg) {
unsigned uuc;
if (parseUnsignedDecOrHex(uuc, arg)) {
unicode = uuc;
return true;
}
if (arg[0] == '\'' && arg[1] && arg[2] == '\'' && !arg[3]) {
unicode = (unicode_t) (unsigned char) arg[1];
return true;
}
return false;
}
#ifndef MSDFGEN_DISABLE_VARIABLE_FONTS
static FontHandle *loadVarFont(FreetypeHandle *library, const char *filename) {
std::string buffer;
while (*filename && *filename != '?')
buffer.push_back(*filename++);
FontHandle *font = loadFont(library, buffer.c_str());
if (font && *filename++ == '?') {
do {
buffer.clear();
while (*filename && *filename != '=')
buffer.push_back(*filename++);
if (*filename == '=') {
char *end = NULL;
double value = strtod(++filename, &end);
if (end > filename) {
filename = end;
setFontVariationAxis(library, font, buffer.c_str(), value);
}
}
} while (*filename++ == '&');
}
return font;
}
#endif
#endif
template <int N>
static void invertColor(const BitmapRef<float, N> &bitmap) {
const float *end = bitmap.pixels+N*bitmap.width*bitmap.height;
for (float *p = bitmap.pixels; p < end; ++p)
*p = 1.f-*p;
}
static bool writeTextBitmap(FILE *file, const float *values, int cols, int rows) {
for (int row = 0; row < rows; ++row) {
for (int col = 0; col < cols; ++col) {
int v = clamp(int((*values++)*0x100), 0xff);
fprintf(file, col ? " %02X" : "%02X", v);
}
fprintf(file, "\n");
}
return true;
}
static bool writeTextBitmapFloat(FILE *file, const float *values, int cols, int rows) {
for (int row = 0; row < rows; ++row) {
for (int col = 0; col < cols; ++col) {
fprintf(file, col ? " %.9g" : "%.9g", *values++);
}
fprintf(file, "\n");
}
return true;
}
static bool writeBinBitmap(FILE *file, const float *values, int count) {
for (int pos = 0; pos < count; ++pos) {
unsigned char v = clamp(int((*values++)*0x100), 0xff);
fwrite(&v, 1, 1, file);
}
return true;
}
#ifdef __BIG_ENDIAN__
static bool writeBinBitmapFloatBE(FILE *file, const float *values, int count)
#else
static bool writeBinBitmapFloat(FILE *file, const float *values, int count)
#endif
{
return (int) fwrite(values, sizeof(float), count, file) == count;
}
#ifdef __BIG_ENDIAN__
static bool writeBinBitmapFloat(FILE *file, const float *values, int count)
#else
static bool writeBinBitmapFloatBE(FILE *file, const float *values, int count)
#endif
{
for (int pos = 0; pos < count; ++pos) {
const unsigned char *b = reinterpret_cast<const unsigned char *>(values++);
for (int i = sizeof(float)-1; i >= 0; --i)
fwrite(b+i, 1, 1, file);
}
return true;
}
static bool cmpExtension(const char *path, const char *ext) {
for (const char *a = path+strlen(path)-1, *b = ext+strlen(ext)-1; b >= ext; --a, --b)
if (a < path || toupper(*a) != toupper(*b))
return false;
return true;
}
template <int N>
static const char *writeOutput(const BitmapConstRef<float, N> &bitmap, const char *filename, Format &format) {
if (filename) {
if (format == AUTO) {
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
if (cmpExtension(filename, ".png")) format = PNG;
#else
if (cmpExtension(filename, ".png"))
return "PNG format is not available in core-only version.";
#endif
else if (cmpExtension(filename, ".bmp")) format = BMP;
else if (cmpExtension(filename, ".tiff") || cmpExtension(filename, ".tif")) format = TIFF;
else if (cmpExtension(filename, ".rgba")) format = RGBA;
else if (cmpExtension(filename, ".fl32")) format = FL32;
else if (cmpExtension(filename, ".txt")) format = TEXT;
else if (cmpExtension(filename, ".bin")) format = BINARY;
else
return "Could not deduce format from output file name.";
}
switch (format) {
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
case PNG: return savePng(bitmap, filename) ? NULL : "Failed to write output PNG image.";
#endif
case BMP: return saveBmp(bitmap, filename) ? NULL : "Failed to write output BMP image.";
case TIFF: return saveTiff(bitmap, filename) ? NULL : "Failed to write output TIFF image.";
case RGBA: return saveRgba(bitmap, filename) ? NULL : "Failed to write output RGBA image.";
case FL32: return saveFl32(bitmap, filename) ? NULL : "Failed to write output FL32 image.";
case TEXT: case TEXT_FLOAT: {
FILE *file = fopen(filename, "w");
if (!file) return "Failed to write output text file.";
if (format == TEXT)
writeTextBitmap(file, bitmap.pixels, N*bitmap.width, bitmap.height);
else if (format == TEXT_FLOAT)
writeTextBitmapFloat(file, bitmap.pixels, N*bitmap.width, bitmap.height);
fclose(file);
return NULL;
}
case BINARY: case BINARY_FLOAT: case BINARY_FLOAT_BE: {
FILE *file = fopen(filename, "wb");
if (!file) return "Failed to write output binary file.";
if (format == BINARY)
writeBinBitmap(file, bitmap.pixels, N*bitmap.width*bitmap.height);
else if (format == BINARY_FLOAT)
writeBinBitmapFloat(file, bitmap.pixels, N*bitmap.width*bitmap.height);
else if (format == BINARY_FLOAT_BE)
writeBinBitmapFloatBE(file, bitmap.pixels, N*bitmap.width*bitmap.height);
fclose(file);
return NULL;
}
default:;
}
} else {
if (format == AUTO || format == TEXT)
writeTextBitmap(stdout, bitmap.pixels, N*bitmap.width, bitmap.height);
else if (format == TEXT_FLOAT)
writeTextBitmapFloat(stdout, bitmap.pixels, N*bitmap.width, bitmap.height);
else
return "Unsupported format for standard output.";
}
return NULL;
}
#define STRINGIZE_(x) #x
#define STRINGIZE(x) STRINGIZE_(x)
#define MSDFGEN_VERSION_STRING STRINGIZE(MSDFGEN_VERSION)
#ifdef MSDFGEN_VERSION_UNDERLINE
#define VERSION_UNDERLINE STRINGIZE(MSDFGEN_VERSION_UNDERLINE)
#else
#define VERSION_UNDERLINE "--------"
#endif
#if defined(MSDFGEN_EXTENSIONS) && (defined(MSDFGEN_DISABLE_SVG) || defined(MSDFGEN_DISABLE_PNG) || defined(MSDFGEN_DISABLE_VARIABLE_FONTS))
#define TITLE_SUFFIX " - custom config"
#define SUFFIX_UNDERLINE "----------------"
#elif !defined(MSDFGEN_EXTENSIONS) && defined(MSDFGEN_USE_OPENMP)
#define TITLE_SUFFIX " - core with OpenMP"
#define SUFFIX_UNDERLINE "-------------------"
#elif !defined(MSDFGEN_EXTENSIONS)
#define TITLE_SUFFIX " - core only"
#define SUFFIX_UNDERLINE "------------"
#elif defined(MSDFGEN_USE_SKIA) && defined(MSDFGEN_USE_OPENMP)
#define TITLE_SUFFIX " with Skia & OpenMP"
#define SUFFIX_UNDERLINE "-------------------"
#elif defined(MSDFGEN_USE_SKIA)
#define TITLE_SUFFIX " with Skia"
#define SUFFIX_UNDERLINE "----------"
#elif defined(MSDFGEN_USE_OPENMP)
#define TITLE_SUFFIX " with OpenMP"
#define SUFFIX_UNDERLINE "------------"
#else
#define TITLE_SUFFIX
#define SUFFIX_UNDERLINE
#endif
static const char *const versionText =
"MSDFgen v" MSDFGEN_VERSION_STRING TITLE_SUFFIX "\n"
"(c) 2016 - " STRINGIZE(MSDFGEN_COPYRIGHT_YEAR) " Viktor Chlumsky";
static const char *const helpText =
"\n"
"Multi-channel signed distance field generator by Viktor Chlumsky v" MSDFGEN_VERSION_STRING TITLE_SUFFIX "\n"
"------------------------------------------------------------------" VERSION_UNDERLINE SUFFIX_UNDERLINE "\n"
" Usage: msdfgen"
#ifdef _WIN32
".exe"
#endif
" <mode> <input specification> <options>\n"
"\n"
"MODES\n"
" sdf - Generate conventional monochrome (true) signed distance field.\n"
" psdf - Generate monochrome signed perpendicular distance field.\n"
" msdf - Generate multi-channel signed distance field. This is used by default if no mode is specified.\n"
" mtsdf - Generate combined multi-channel and true signed distance field in the alpha channel.\n"
" metrics - Report shape metrics only.\n"
"\n"
"INPUT SPECIFICATION\n"
" -defineshape <definition>\n"
"\tDefines input shape using the ad-hoc text definition.\n"
#ifdef MSDFGEN_EXTENSIONS
" -font <filename.ttf> <character code>\n"
"\tLoads a single glyph from the specified font file.\n"
"\tFormat of character code is '?', 63, 0x3F (Unicode value), or g34 (glyph index).\n"
#endif
" -shapedesc <filename.txt>\n"
"\tLoads text shape description from a file.\n"
" -stdin\n"
"\tReads text shape description from the standard input.\n"
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_SVG)
" -svg <filename.svg>\n"
"\tLoads the last vector path found in the specified SVG file.\n"
#endif
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_VARIABLE_FONTS)
" -varfont <filename and variables> <character code>\n"
"\tLoads a single glyph from a variable font. Specify variable values as x.ttf?var1=0.5&var2=1\n"
#endif
"\n"
// Keep alphabetical order!
"OPTIONS\n"
" -angle <angle>\n"
"\tSpecifies the minimum angle between adjacent edges to be considered a corner. Append D for degrees.\n"
" -apxrange <outermost distance> <innermost distance>\n"
"\tSpecifies the outermost (negative) and innermost representable distance in pixels.\n"
" -arange <outermost distance> <innermost distance>\n"
"\tSpecifies the outermost (negative) and innermost representable distance in shape units.\n"
" -ascale <x scale> <y scale>\n"
"\tSets the scale used to convert shape units to pixels asymmetrically.\n"
" -autoframe\n"
"\tAutomatically scales (unless specified) and translates the shape to fit.\n"
" -coloringstrategy <simple / inktrap / distance>\n"
"\tSelects the strategy of the edge coloring heuristic.\n"
" -dimensions <width> <height>\n"
"\tSets the dimensions of the output image.\n"
" -edgecolors <sequence>\n"
"\tOverrides automatic edge coloring with the specified color sequence.\n"
#ifdef MSDFGEN_EXTENSIONS
" -emnormalize\n"
"\tBefore applying scale, normalizes font glyph coordinates so that 1 = 1 em.\n"
#endif
" -errorcorrection <mode>\n"
"\tChanges the MSDF/MTSDF error correction mode. Use -errorcorrection help for a list of valid modes.\n"
" -errordeviationratio <ratio>\n"
"\tSets the minimum ratio between the actual and maximum expected distance delta to be considered an error.\n"
" -errorimproveratio <ratio>\n"
"\tSets the minimum ratio between the pre-correction distance error and the post-correction distance error.\n"
" -estimateerror\n"
"\tComputes and prints the distance field's estimated fill error to the standard output.\n"
" -exportshape <filename.txt>\n"
"\tSaves the shape description into a text file that can be edited and loaded using -shapedesc.\n"
" -exportsvg <filename.svg>\n"
"\tSaves the shape geometry into a simple SVG file.\n"
" -fillrule <nonzero / evenodd / positive / negative>\n"
"\tSets the fill rule for the scanline pass. Default is nonzero.\n"
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
" -format <png / bmp / tiff / rgba / fl32 / text / textfloat / bin / binfloat / binfloatbe>\n"
#else
" -format <bmp / tiff / rgba / fl32 / text / textfloat / bin / binfloat / binfloatbe>\n"
#endif
"\tSpecifies the output format of the distance field. Otherwise it is chosen based on output file extension.\n"
" -guessorder\n"
"\tAttempts to detect if shape contours have the wrong winding and generates the SDF with the right one.\n"
" -help\n"
"\tDisplays this help.\n"
" -legacy\n"
"\tUses the original (legacy) distance field algorithms.\n"
#ifdef MSDFGEN_EXTENSIONS
" -noemnormalize\n"
"\tRaw integer font glyph coordinates will be used. Without this option, legacy scaling will be applied.\n"
#endif
#ifdef MSDFGEN_USE_SKIA
" -nopreprocess\n"
"\tDisables path preprocessing which resolves self-intersections and overlapping contours.\n"
#else
" -nooverlap\n"
"\tDisables resolution of overlapping contours.\n"
" -noscanline\n"
"\tDisables the scanline pass, which corrects the distance field's signs according to the selected fill rule.\n"
#endif
" -o <filename>\n"
"\tSets the output file name. The default value is \"output." DEFAULT_IMAGE_EXTENSION "\".\n"
#ifdef MSDFGEN_USE_SKIA
" -overlap\n"
"\tSwitches to distance field generator with support for overlapping contours.\n"
#endif
" -printmetrics\n"
"\tPrints relevant metrics of the shape to the standard output.\n"
" -pxrange <range>\n"
"\tSets the width of the range between the lowest and highest signed distance in pixels.\n"
" -range <range>\n"
"\tSets the width of the range between the lowest and highest signed distance in shape units.\n"
" -reverseorder\n"
"\tGenerates the distance field as if the shape's vertices were in reverse order.\n"
" -scale <scale>\n"
"\tSets the scale used to convert shape units to pixels.\n"
#ifdef MSDFGEN_USE_SKIA
" -scanline\n"
"\tPerforms an additional scanline pass to fix the signs of the distances.\n"
#endif
" -seed <n>\n"
"\tSets the random seed for edge coloring heuristic.\n"
" -stdout\n"
"\tPrints the output instead of storing it in a file. Only text formats are supported.\n"
" -testrender <filename." DEFAULT_IMAGE_EXTENSION "> <width> <height>\n"
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
"\tRenders an image preview using the generated distance field and saves it as a PNG file.\n"
#else
"\tRenders an image preview using the generated distance field and saves it as a TIFF file.\n"
#endif
" -testrendermulti <filename." DEFAULT_IMAGE_EXTENSION "> <width> <height>\n"
"\tRenders an image preview without flattening the color channels.\n"
" -translate <x> <y>\n"
"\tSets the translation of the shape in shape units.\n"
" -version\n"
"\tPrints the version of the program.\n"
" -windingpreprocess\n"
"\tAttempts to fix only the contour windings assuming no self-intersections and even-odd fill rule.\n"
" -yflip\n"
"\tInverts the Y axis in the output distance field. The default order is bottom to top.\n"
"\n";
static const char *errorCorrectionHelpText =
"\n"
"ERROR CORRECTION MODES\n"
" auto-fast\n"
"\tDetects inversion artifacts and distance errors that do not affect edges by range testing.\n"
" auto-full\n"
"\tDetects inversion artifacts and distance errors that do not affect edges by exact distance evaluation.\n"
" auto-mixed (default)\n"
"\tDetects inversions by distance evaluation and distance errors that do not affect edges by range testing.\n"
" disabled\n"
"\tDisables error correction.\n"
" distance-fast\n"
"\tDetects distance errors by range testing. Does not care if edges and corners are affected.\n"
" distance-full\n"
"\tDetects distance errors by exact distance evaluation. Does not care if edges and corners are affected, slow.\n"
" edge-fast\n"
"\tDetects inversion artifacts only by range testing.\n"
" edge-full\n"
"\tDetects inversion artifacts only by exact distance evaluation.\n"
" help\n"
"\tDisplays this help.\n"
"\n";
int main(int argc, const char *const *argv) {
#define ABORT(msg) do { fputs(msg "\n", stderr); return 1; } while (false)
// Parse command line arguments
enum {
NONE,
SVG,
FONT,
VAR_FONT,
DESCRIPTION_ARG,
DESCRIPTION_STDIN,
DESCRIPTION_FILE
} inputType = NONE;
enum {
SINGLE,
PERPENDICULAR,
MULTI,
MULTI_AND_TRUE,
METRICS
} mode = MULTI;
enum {
NO_PREPROCESS,
WINDING_PREPROCESS,
FULL_PREPROCESS
} geometryPreproc = (
#ifdef MSDFGEN_USE_SKIA
FULL_PREPROCESS
#else
NO_PREPROCESS
#endif
);
bool legacyMode = false;
MSDFGeneratorConfig generatorConfig;
generatorConfig.overlapSupport = geometryPreproc == NO_PREPROCESS;
bool scanlinePass = geometryPreproc == NO_PREPROCESS;
FillRule fillRule = FILL_NONZERO;
Format format = AUTO;
const char *input = NULL;
const char *output = "output." DEFAULT_IMAGE_EXTENSION;
const char *shapeExport = NULL;
const char *svgExport = NULL;
const char *testRender = NULL;
const char *testRenderMulti = NULL;
bool outputSpecified = false;
#ifdef MSDFGEN_EXTENSIONS
bool glyphIndexSpecified = false;
GlyphIndex glyphIndex;
unicode_t unicode = 0;
FontCoordinateScaling fontCoordinateScaling = FONT_SCALING_LEGACY;
bool fontCoordinateScalingSpecified = false;
#endif
int width = 64, height = 64;
int testWidth = 0, testHeight = 0;
int testWidthM = 0, testHeightM = 0;
bool autoFrame = false;
enum {
RANGE_UNIT,
RANGE_PX
} rangeMode = RANGE_PX;
Range range(1);
Range pxRange(2);
Vector2 translate;
Vector2 scale = 1;
bool scaleSpecified = false;
double angleThreshold = DEFAULT_ANGLE_THRESHOLD;
float outputDistanceShift = 0.f;
const char *edgeAssignment = NULL;
bool yFlip = false;
bool printMetrics = false;
bool estimateError = false;
bool skipColoring = false;
enum {
KEEP,
REVERSE,
GUESS
} orientation = KEEP;
unsigned long long coloringSeed = 0;
void (*edgeColoring)(Shape &, double, unsigned long long) = &edgeColoringSimple;
bool explicitErrorCorrectionMode = false;
int argPos = 1;
bool suggestHelp = false;
while (argPos < argc) {
const char *arg = argv[argPos];
#define ARG_CASE(s, p) if ((!strcmp(arg, s)) && argPos+(p) < argc && (++argPos, true))
#define ARG_CASE_OR ) || !strcmp(arg,
#define ARG_MODE(s, m) if (!strcmp(arg, s)) { mode = m; ++argPos; continue; }
#define ARG_IS(s) (!strcmp(argv[argPos], s))
#define SET_FORMAT(fmt, ext) do { format = fmt; if (!outputSpecified) output = "output." ext; } while (false)
// Accept arguments prefixed with -- instead of -
if (arg[0] == '-' && arg[1] == '-')
++arg;
ARG_MODE("sdf", SINGLE)
ARG_MODE("psdf", PERPENDICULAR)
ARG_MODE("msdf", MULTI)
ARG_MODE("mtsdf", MULTI_AND_TRUE)
ARG_MODE("metrics", METRICS)
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_SVG)
ARG_CASE("-svg", 1) {
inputType = SVG;
input = argv[argPos++];
continue;
}
#endif
#ifdef MSDFGEN_EXTENSIONS
//ARG_CASE -font, -varfont
if (argPos+2 < argc && (
(!strcmp(arg, "-font") && (inputType = FONT, true))
#ifndef MSDFGEN_DISABLE_VARIABLE_FONTS
|| (!strcmp(arg, "-varfont") && (inputType = VAR_FONT, true))
#endif
) && (++argPos, true)) {
input = argv[argPos++];
const char *charArg = argv[argPos++];
unsigned gi;
switch (charArg[0]) {
case 'G': case 'g':
if (parseUnsignedDecOrHex(gi, charArg+1)) {
glyphIndex = GlyphIndex(gi);
glyphIndexSpecified = true;
}
break;
case 'U': case 'u':
++charArg;
// fallthrough
default:
parseUnicode(unicode, charArg);
}
continue;
}
ARG_CASE("-noemnormalize", 0) {
fontCoordinateScaling = FONT_SCALING_NONE;
fontCoordinateScalingSpecified = true;
continue;
}
ARG_CASE("-emnormalize", 0) {
fontCoordinateScaling = FONT_SCALING_EM_NORMALIZED;
fontCoordinateScalingSpecified = true;
continue;
}
ARG_CASE("-legacyfontscaling", 0) {
fontCoordinateScaling = FONT_SCALING_LEGACY;
fontCoordinateScalingSpecified = true;
continue;
}
#else
ARG_CASE("-svg", 1) {
ABORT("SVG input is not available in core-only version.");
}
ARG_CASE("-font", 2) {
ABORT("Font input is not available in core-only version.");
}
ARG_CASE("-varfont", 2) {
ABORT("Variable font input is not available in core-only version.");
}
#endif
ARG_CASE("-defineshape", 1) {
inputType = DESCRIPTION_ARG;
input = argv[argPos++];
continue;
}
ARG_CASE("-stdin", 0) {
inputType = DESCRIPTION_STDIN;
input = "stdin";
continue;
}
ARG_CASE("-shapedesc", 1) {
inputType = DESCRIPTION_FILE;
input = argv[argPos++];
continue;
}
ARG_CASE("-o" ARG_CASE_OR "-out" ARG_CASE_OR "-output" ARG_CASE_OR "-imageout", 1) {
output = argv[argPos++];
outputSpecified = true;
continue;
}
ARG_CASE("-stdout", 0) {
output = NULL;
continue;
}
ARG_CASE("-legacy", 0) {
legacyMode = true;
#ifdef MSDFGEN_EXTENSIONS
fontCoordinateScaling = FONT_SCALING_LEGACY;
fontCoordinateScalingSpecified = true;
#endif
continue;
}
ARG_CASE("-nopreprocess", 0) {
geometryPreproc = NO_PREPROCESS;
continue;
}
ARG_CASE("-windingpreprocess", 0) {
geometryPreproc = WINDING_PREPROCESS;
continue;
}
ARG_CASE("-preprocess", 0) {
geometryPreproc = FULL_PREPROCESS;
continue;
}
ARG_CASE("-nooverlap", 0) {
generatorConfig.overlapSupport = false;
continue;
}
ARG_CASE("-overlap", 0) {
generatorConfig.overlapSupport = true;
continue;
}
ARG_CASE("-noscanline", 0) {
scanlinePass = false;
continue;
}
ARG_CASE("-scanline", 0) {
scanlinePass = true;
continue;
}
ARG_CASE("-fillrule", 1) {
scanlinePass = true;
if (ARG_IS("nonzero")) fillRule = FILL_NONZERO;
else if (ARG_IS("evenodd") || ARG_IS("odd")) fillRule = FILL_ODD;
else if (ARG_IS("positive")) fillRule = FILL_POSITIVE;
else if (ARG_IS("negative")) fillRule = FILL_NEGATIVE;
else
fputs("Unknown fill rule specified.\n", stderr);
++argPos;
continue;
}
ARG_CASE("-format", 1) {
if (ARG_IS("auto")) format = AUTO;
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_PNG)
else if (ARG_IS("png")) SET_FORMAT(PNG, "png");
#else
else if (ARG_IS("png"))
fputs("PNG format is not available in core-only version.\n", stderr);
#endif
else if (ARG_IS("bmp")) SET_FORMAT(BMP, "bmp");
else if (ARG_IS("tiff") || ARG_IS("tif")) SET_FORMAT(TIFF, "tiff");
else if (ARG_IS("rgba")) SET_FORMAT(RGBA, "rgba");
else if (ARG_IS("fl32")) SET_FORMAT(FL32, "fl32");
else if (ARG_IS("text") || ARG_IS("txt")) SET_FORMAT(TEXT, "txt");
else if (ARG_IS("textfloat") || ARG_IS("txtfloat")) SET_FORMAT(TEXT_FLOAT, "txt");
else if (ARG_IS("bin") || ARG_IS("binary")) SET_FORMAT(BINARY, "bin");
else if (ARG_IS("binfloat") || ARG_IS("binfloatle")) SET_FORMAT(BINARY_FLOAT, "bin");
else if (ARG_IS("binfloatbe")) SET_FORMAT(BINARY_FLOAT_BE, "bin");
else
fputs("Unknown format specified.\n", stderr);
++argPos;
continue;
}
ARG_CASE("-dimensions" ARG_CASE_OR "-size", 2) {
unsigned w, h;
if (!(parseUnsigned(w, argv[argPos++]) && parseUnsigned(h, argv[argPos++]) && w && h))
ABORT("Invalid dimensions. Use -dimensions <width> <height> with two positive integers.");
width = w, height = h;
continue;
}
ARG_CASE("-autoframe", 0) {
autoFrame = true;
continue;
}
ARG_CASE("-range" ARG_CASE_OR "-unitrange", 1) {
double r;
if (!parseDouble(r, argv[argPos++]))
ABORT("Invalid range argument. Use -range <range> with a real number.");
if (r == 0)
ABORT("Range must be non-zero.");
rangeMode = RANGE_UNIT;
range = Range(r);
continue;
}
ARG_CASE("-pxrange", 1) {
double r;
if (!parseDouble(r, argv[argPos++]))
ABORT("Invalid range argument. Use -pxrange <range> with a real number.");
if (r == 0)
ABORT("Range must be non-zero.");
rangeMode = RANGE_PX;
pxRange = Range(r);
continue;
}
ARG_CASE("-arange" ARG_CASE_OR "-aunitrange", 2) {
double r0, r1;
if (!(parseDouble(r0, argv[argPos++]) && parseDouble(r1, argv[argPos++])))
ABORT("Invalid range arguments. Use -arange <minimum> <maximum> with two real numbers.");
if (r0 == r1)
ABORT("Range must be non-empty.");
rangeMode = RANGE_UNIT;
range = Range(r0, r1);
continue;
}
ARG_CASE("-apxrange", 2) {
double r0, r1;
if (!(parseDouble(r0, argv[argPos++]) && parseDouble(r1, argv[argPos++])))
ABORT("Invalid range arguments. Use -apxrange <minimum> <maximum> with two real numbers.");
if (r0 == r1)
ABORT("Range must be non-empty.");
rangeMode = RANGE_PX;
pxRange = Range(r0, r1);
continue;
}
ARG_CASE("-scale", 1) {
double s;
if (!(parseDouble(s, argv[argPos++]) && s > 0))
ABORT("Invalid scale argument. Use -scale <scale> with a positive real number.");
scale = s;
scaleSpecified = true;
continue;
}
ARG_CASE("-ascale", 2) {
double sx, sy;
if (!(parseDouble(sx, argv[argPos++]) && parseDouble(sy, argv[argPos++]) && sx > 0 && sy > 0))
ABORT("Invalid scale arguments. Use -ascale <x> <y> with two positive real numbers.");
scale.set(sx, sy);
scaleSpecified = true;
continue;
}
ARG_CASE("-translate", 2) {
double tx, ty;
if (!(parseDouble(tx, argv[argPos++]) && parseDouble(ty, argv[argPos++])))
ABORT("Invalid translate arguments. Use -translate <x> <y> with two real numbers.");
translate.set(tx, ty);
continue;
}
ARG_CASE("-angle", 1) {
double at;
if (!parseAngle(at, argv[argPos++]))
ABORT("Invalid angle threshold. Use -angle <min angle> with a positive real number less than PI or a value in degrees followed by 'd' below 180d.");
angleThreshold = at;
continue;
}
ARG_CASE("-errorcorrection", 1) {
if (ARG_IS("disable") || ARG_IS("disabled") || ARG_IS("0") || ARG_IS("none") || ARG_IS("false")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::DISABLED;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
} else if (ARG_IS("default") || ARG_IS("auto") || ARG_IS("auto-mixed") || ARG_IS("mixed")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::EDGE_PRIORITY;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::CHECK_DISTANCE_AT_EDGE;
} else if (ARG_IS("auto-fast") || ARG_IS("fast")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::EDGE_PRIORITY;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
} else if (ARG_IS("auto-full") || ARG_IS("full")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::EDGE_PRIORITY;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::ALWAYS_CHECK_DISTANCE;
} else if (ARG_IS("distance") || ARG_IS("distance-fast") || ARG_IS("indiscriminate") || ARG_IS("indiscriminate-fast")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::INDISCRIMINATE;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
} else if (ARG_IS("distance-full") || ARG_IS("indiscriminate-full")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::INDISCRIMINATE;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::ALWAYS_CHECK_DISTANCE;
} else if (ARG_IS("edge-fast")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::EDGE_ONLY;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
} else if (ARG_IS("edge") || ARG_IS("edge-full")) {
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::EDGE_ONLY;
generatorConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::ALWAYS_CHECK_DISTANCE;
} else if (ARG_IS("help")) {
puts(errorCorrectionHelpText);
return 0;
} else
fputs("Unknown error correction mode. Use -errorcorrection help for more information.\n", stderr);
++argPos;
explicitErrorCorrectionMode = true;
continue;
}
ARG_CASE("-errordeviationratio", 1) {
double edr;
if (!(parseDouble(edr, argv[argPos++]) && edr > 0))
ABORT("Invalid error deviation ratio. Use -errordeviationratio <ratio> with a positive real number.");
generatorConfig.errorCorrection.minDeviationRatio = edr;
continue;
}
ARG_CASE("-errorimproveratio", 1) {
double eir;
if (!(parseDouble(eir, argv[argPos++]) && eir > 0))
ABORT("Invalid error improvement ratio. Use -errorimproveratio <ratio> with a positive real number.");
generatorConfig.errorCorrection.minImproveRatio = eir;
continue;
}
ARG_CASE("-coloringstrategy" ARG_CASE_OR "-edgecoloring", 1) {
if (ARG_IS("simple")) edgeColoring = &edgeColoringSimple;
else if (ARG_IS("inktrap")) edgeColoring = &edgeColoringInkTrap;
else if (ARG_IS("distance")) edgeColoring = &edgeColoringByDistance;
else
fputs("Unknown coloring strategy specified.\n", stderr);
++argPos;
continue;
}
ARG_CASE("-edgecolors", 1) {
static const char *allowed = " ?,cmwyCMWY";
for (int i = 0; argv[argPos][i]; ++i) {
for (int j = 0; allowed[j]; ++j)
if (argv[argPos][i] == allowed[j])
goto EDGE_COLOR_VERIFIED;
ABORT("Invalid edge coloring sequence. Use -edgecolors <color sequence> with only the colors C, M, Y, and W. Separate contours by commas and use ? to keep the default assigment for a contour.");
EDGE_COLOR_VERIFIED:;
}
edgeAssignment = argv[argPos++];
continue;
}
ARG_CASE("-distanceshift", 1) {
double ds;
if (!parseDouble(ds, argv[argPos++]))
ABORT("Invalid distance shift. Use -distanceshift <shift> with a real value.");
outputDistanceShift = (float) ds;
continue;
}
ARG_CASE("-exportshape", 1) {
shapeExport = argv[argPos++];
continue;
}
ARG_CASE("-exportsvg", 1) {
svgExport = argv[argPos++];
continue;
}
ARG_CASE("-testrender", 3) {
unsigned w, h;
testRender = argv[argPos++];
if (!(parseUnsigned(w, argv[argPos++]) && parseUnsigned(h, argv[argPos++]) && (int) w > 0 && (int) h > 0))
ABORT("Invalid arguments for test render. Use -testrender <output." DEFAULT_IMAGE_EXTENSION "> <width> <height>.");
testWidth = w, testHeight = h;
continue;
}
ARG_CASE("-testrendermulti", 3) {
unsigned w, h;
testRenderMulti = argv[argPos++];
if (!(parseUnsigned(w, argv[argPos++]) && parseUnsigned(h, argv[argPos++]) && (int) w > 0 && (int) h > 0))
ABORT("Invalid arguments for test render. Use -testrendermulti <output." DEFAULT_IMAGE_EXTENSION "> <width> <height>.");
testWidthM = w, testHeightM = h;
continue;
}
ARG_CASE("-yflip", 0) {
yFlip = true;
continue;
}
ARG_CASE("-printmetrics", 0) {
printMetrics = true;
continue;
}
ARG_CASE("-estimateerror", 0) {
estimateError = true;
continue;
}
ARG_CASE("-keeporder", 0) {
orientation = KEEP;
continue;
}
ARG_CASE("-reverseorder", 0) {
orientation = REVERSE;
continue;
}
ARG_CASE("-guessorder", 0) {
orientation = GUESS;
continue;
}
ARG_CASE("-seed", 1) {
if (!parseUnsignedLL(coloringSeed, argv[argPos++]))
ABORT("Invalid seed. Use -seed <N> with N being a non-negative integer.");
continue;
}
ARG_CASE("-version", 0) {
puts(versionText);
return 0;
}
ARG_CASE("-help", 0) {
puts(helpText);
return 0;
}
fprintf(stderr, "Unknown setting or insufficient parameters: %s\n", argv[argPos++]);
suggestHelp = true;
}
if (suggestHelp)
fprintf(stderr, "Use -help for more information.\n");
// Load input
Shape::Bounds svgViewBox = { };
double glyphAdvance = 0;
if (!inputType || !input) {
#ifdef MSDFGEN_EXTENSIONS
#ifdef MSDFGEN_DISABLE_SVG
ABORT("No input specified! Use -font <file.ttf/otf> <character code> or see -help.");
#else
ABORT("No input specified! Use either -svg <file.svg> or -font <file.ttf/otf> <character code>, or see -help.");
#endif
#else
ABORT("No input specified! See -help.");
#endif
}
if (mode == MULTI_AND_TRUE && (format == BMP || (format == AUTO && output && cmpExtension(output, ".bmp"))))
ABORT("Incompatible image format. A BMP file cannot contain alpha channel, which is required in mtsdf mode.");
Shape shape;
switch (inputType) {
#if defined(MSDFGEN_EXTENSIONS) && !defined(MSDFGEN_DISABLE_SVG)
case SVG: {
int svgImportFlags = loadSvgShape(shape, svgViewBox, input);
if (!(svgImportFlags&SVG_IMPORT_SUCCESS_FLAG))
ABORT("Failed to load shape from SVG file.");
if (svgImportFlags&SVG_IMPORT_PARTIAL_FAILURE_FLAG)
fputs("Warning: Failed to load part of SVG file.\n", stderr);
if (svgImportFlags&SVG_IMPORT_INCOMPLETE_FLAG)
fputs("Warning: SVG file contains multiple paths or shapes but this version is only able to load one.\n", stderr);
else if (svgImportFlags&SVG_IMPORT_UNSUPPORTED_FEATURE_FLAG)
fputs("Warning: SVG file likely contains elements that are unsupported.\n", stderr);
if (svgImportFlags&SVG_IMPORT_TRANSFORMATION_IGNORED_FLAG)
fputs("Warning: SVG path transformation ignored.\n", stderr);
break;
}
#endif
#ifdef MSDFGEN_EXTENSIONS
case FONT: case VAR_FONT: {
if (!glyphIndexSpecified && !unicode)
ABORT("No character specified! Use -font <file.ttf/otf> <character code>. Character code can be a Unicode index (65, 0x41), a character in apostrophes ('A'), or a glyph index prefixed by g (g36, g0x24).");
struct FreetypeFontGuard {
FreetypeHandle *ft;
FontHandle *font;
FreetypeFontGuard() : ft(), font() { }
~FreetypeFontGuard() {
if (ft) {
if (font)
destroyFont(font);
deinitializeFreetype(ft);
}
}
} guard;
if (!(guard.ft = initializeFreetype()))
ABORT("Failed to initialize FreeType library.");
if (!(guard.font = (
#ifndef MSDFGEN_DISABLE_VARIABLE_FONTS
inputType == VAR_FONT ? loadVarFont(guard.ft, input) :
#endif
loadFont(guard.ft, input)
)))
ABORT("Failed to load font file.");
if (unicode)
getGlyphIndex(glyphIndex, guard.font, unicode);
if (!loadGlyph(shape, guard.font, glyphIndex, fontCoordinateScaling, &glyphAdvance))
ABORT("Failed to load glyph from font file.");
if (!fontCoordinateScalingSpecified && (!autoFrame || scaleSpecified || rangeMode == RANGE_UNIT || mode == METRICS || printMetrics || shapeExport || svgExport)) {
fputs(
"Warning: Using legacy font coordinate conversion for compatibility reasons.\n"
" The implicit scaling behavior will likely change in a future version resulting in different output.\n"
" To silence this warning, use one of the following options:\n"
" -noemnormalize to switch to the correct native font coordinates,\n"
" -emnormalize to switch to coordinates normalized to 1 em, or\n"
" -legacyfontscaling to keep current behavior and make sure it will not change.\n", stderr);
}
break;
}
#endif
case DESCRIPTION_ARG: {
if (!readShapeDescription(input, shape, &skipColoring))
ABORT("Parse error in shape description.");
break;
}
case DESCRIPTION_STDIN: {
if (!readShapeDescription(stdin, shape, &skipColoring))
ABORT("Parse error in shape description.");
break;
}
case DESCRIPTION_FILE: {
FILE *file = fopen(input, "r");
if (!file)
ABORT("Failed to load shape description file.");
bool readSuccessful = readShapeDescription(file, shape, &skipColoring);
fclose(file);
if (!readSuccessful)
ABORT("Parse error in shape description.");
break;
}
default:;
}
// Validate and normalize shape
if (!shape.validate())
ABORT("The geometry of the loaded shape is invalid.");
switch (geometryPreproc) {
case NO_PREPROCESS:
break;
case WINDING_PREPROCESS:
shape.orientContours();
break;
case FULL_PREPROCESS:
#ifdef MSDFGEN_USE_SKIA
if (!resolveShapeGeometry(shape))
fputs("Shape geometry preprocessing failed, skipping.\n", stderr);
else if (skipColoring) {
skipColoring = false;
fputs("Note: Input shape coloring won't be preserved due to geometry preprocessing.\n", stderr);
}
#else
ABORT("Shape geometry preprocessing (-preprocess) is not available in this version because the Skia library is not present.");
#endif
break;
}
shape.normalize();
if (yFlip)
shape.inverseYAxis = !shape.inverseYAxis;
double avgScale = .5*(scale.x+scale.y);
Shape::Bounds bounds = { };
if (autoFrame || mode == METRICS || printMetrics || orientation == GUESS || svgExport)
bounds = shape.getBounds();
if (outputDistanceShift) {
Range &rangeRef = rangeMode == RANGE_PX ? pxRange : range;
double rangeShift = -outputDistanceShift*(rangeRef.upper-rangeRef.lower);
rangeRef.lower += rangeShift;
rangeRef.upper += rangeShift;
}
// Auto-frame
if (autoFrame) {
double l = bounds.l, b = bounds.b, r = bounds.r, t = bounds.t;
Vector2 frame(width, height);
if (!scaleSpecified) {
if (rangeMode == RANGE_UNIT)
l += range.lower, b += range.lower, r -= range.lower, t -= range.lower;
else
frame += 2*pxRange.lower;
}
if (l >= r || b >= t)
l = 0, b = 0, r = 1, t = 1;
if (frame.x <= 0 || frame.y <= 0)
ABORT("Cannot fit the specified pixel range.");
Vector2 dims(r-l, t-b);
if (scaleSpecified)
translate = .5*(frame/scale-dims)-Vector2(l, b);
else {
if (dims.x*frame.y < dims.y*frame.x) {
translate.set(.5*(frame.x/frame.y*dims.y-dims.x)-l, -b);
scale = avgScale = frame.y/dims.y;
} else {
translate.set(-l, .5*(frame.y/frame.x*dims.x-dims.y)-b);
scale = avgScale = frame.x/dims.x;
}
}
if (rangeMode == RANGE_PX && !scaleSpecified)
translate -= pxRange.lower/scale;
}
if (rangeMode == RANGE_PX)
range = pxRange/min(scale.x, scale.y);
// Print metrics
if (mode == METRICS || printMetrics) {
FILE *out = stdout;
if (mode == METRICS && outputSpecified)
out = fopen(output, "w");
if (!out)
ABORT("Failed to write output file.");
if (shape.inverseYAxis)
fprintf(out, "inverseY = true\n");
if (svgViewBox.l < svgViewBox.r && svgViewBox.b < svgViewBox.t)
fprintf(out, "view box = %.17g, %.17g, %.17g, %.17g\n", svgViewBox.l, svgViewBox.b, svgViewBox.r, svgViewBox.t);
if (bounds.l < bounds.r && bounds.b < bounds.t)
fprintf(out, "bounds = %.17g, %.17g, %.17g, %.17g\n", bounds.l, bounds.b, bounds.r, bounds.t);
if (glyphAdvance != 0)
fprintf(out, "advance = %.17g\n", glyphAdvance);
if (autoFrame) {
if (!scaleSpecified)
fprintf(out, "scale = %.17g\n", avgScale);
fprintf(out, "translate = %.17g, %.17g\n", translate.x, translate.y);
}
if (rangeMode == RANGE_PX)
fprintf(out, "range %.17g to %.17g\n", range.lower, range.upper);
if (mode == METRICS && outputSpecified)
fclose(out);
}
// Compute output
SDFTransformation transformation(Projection(scale, translate), range);
Bitmap<float, 1> sdf;
Bitmap<float, 3> msdf;
Bitmap<float, 4> mtsdf;
MSDFGeneratorConfig postErrorCorrectionConfig(generatorConfig);
if (scanlinePass) {
if (explicitErrorCorrectionMode && generatorConfig.errorCorrection.distanceCheckMode != ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE) {
const char *fallbackModeName = "unknown";
switch (generatorConfig.errorCorrection.mode) {
case ErrorCorrectionConfig::DISABLED: fallbackModeName = "disabled"; break;
case ErrorCorrectionConfig::INDISCRIMINATE: fallbackModeName = "distance-fast"; break;
case ErrorCorrectionConfig::EDGE_PRIORITY: fallbackModeName = "auto-fast"; break;
case ErrorCorrectionConfig::EDGE_ONLY: fallbackModeName = "edge-fast"; break;
}
fprintf(stderr, "Selected error correction mode not compatible with scanline pass, falling back to %s.\n", fallbackModeName);
}
generatorConfig.errorCorrection.mode = ErrorCorrectionConfig::DISABLED;
postErrorCorrectionConfig.errorCorrection.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
}
switch (mode) {
case SINGLE: {
sdf = Bitmap<float, 1>(width, height);
if (legacyMode)
generateSDF_legacy(sdf, shape, range, scale, translate);
else
generateSDF(sdf, shape, transformation, generatorConfig);
break;
}
case PERPENDICULAR: {
sdf = Bitmap<float, 1>(width, height);
if (legacyMode)
generatePSDF_legacy(sdf, shape, range, scale, translate);
else
generatePSDF(sdf, shape, transformation, generatorConfig);
break;
}
case MULTI: {
if (!skipColoring)
edgeColoring(shape, angleThreshold, coloringSeed);
if (edgeAssignment)
parseColoring(shape, edgeAssignment);
msdf = Bitmap<float, 3>(width, height);
if (legacyMode)
generateMSDF_legacy(msdf, shape, range, scale, translate, generatorConfig.errorCorrection);
else
generateMSDF(msdf, shape, transformation, generatorConfig);
break;
}
case MULTI_AND_TRUE: {
if (!skipColoring)
edgeColoring(shape, angleThreshold, coloringSeed);
if (edgeAssignment)
parseColoring(shape, edgeAssignment);
mtsdf = Bitmap<float, 4>(width, height);
if (legacyMode)
generateMTSDF_legacy(mtsdf, shape, range, scale, translate, generatorConfig.errorCorrection);
else
generateMTSDF(mtsdf, shape, transformation, generatorConfig);
break;
}
default:;
}
if (orientation == GUESS) {
// Get sign of signed distance outside bounds
Point2 p(bounds.l-(bounds.r-bounds.l)-1, bounds.b-(bounds.t-bounds.b)-1);
double distance = SimpleTrueShapeDistanceFinder::oneShotDistance(shape, p);
orientation = distance <= 0 ? KEEP : REVERSE;
}
if (orientation == REVERSE) {
switch (mode) {
case SINGLE:
case PERPENDICULAR:
invertColor<1>(sdf);
break;
case MULTI:
invertColor<3>(msdf);
break;
case MULTI_AND_TRUE:
invertColor<4>(mtsdf);
break;
default:;
}
}
if (scanlinePass) {
switch (mode) {
case SINGLE:
case PERPENDICULAR:
distanceSignCorrection(sdf, shape, transformation, fillRule);
break;
case MULTI:
distanceSignCorrection(msdf, shape, transformation, fillRule);
msdfErrorCorrection(msdf, shape, transformation, postErrorCorrectionConfig);
break;
case MULTI_AND_TRUE:
distanceSignCorrection(mtsdf, shape, transformation, fillRule);
msdfErrorCorrection(mtsdf, shape, transformation, postErrorCorrectionConfig);
break;
default:;
}
}
// Save output
if (shapeExport) {
if (FILE *file = fopen(shapeExport, "w")) {
writeShapeDescription(file, shape);
fclose(file);
} else
fputs("Failed to write shape export file.\n", stderr);
}
if (svgExport) {
if (!saveSvgShape(shape, bounds, svgExport))
fputs("Failed to write shape SVG file.\n", stderr);
}
const char *error = NULL;
switch (mode) {
case SINGLE:
case PERPENDICULAR:
if ((error = writeOutput<1>(sdf, output, format))) {
fprintf(stderr, "%s\n", error);
return 1;
}
if (is8bitFormat(format) && (testRenderMulti || testRender || estimateError))
simulate8bit(sdf);
if (estimateError) {
double sdfError = estimateSDFError(sdf, shape, transformation, SDF_ERROR_ESTIMATE_PRECISION, fillRule);
printf("SDF error ~ %e\n", sdfError);
}
if (testRenderMulti) {
Bitmap<float, 3> render(testWidthM, testHeightM);
renderSDF(render, sdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRenderMulti))
fputs("Failed to write test render file.\n", stderr);
}
if (testRender) {
Bitmap<float, 1> render(testWidth, testHeight);
renderSDF(render, sdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRender))
fputs("Failed to write test render file.\n", stderr);
}
break;
case MULTI:
if ((error = writeOutput<3>(msdf, output, format))) {
fprintf(stderr, "%s\n", error);
return 1;
}
if (is8bitFormat(format) && (testRenderMulti || testRender || estimateError))
simulate8bit(msdf);
if (estimateError) {
double sdfError = estimateSDFError(msdf, shape, transformation, SDF_ERROR_ESTIMATE_PRECISION, fillRule);
printf("SDF error ~ %e\n", sdfError);
}
if (testRenderMulti) {
Bitmap<float, 3> render(testWidthM, testHeightM);
renderSDF(render, msdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRenderMulti))
fputs("Failed to write test render file.\n", stderr);
}
if (testRender) {
Bitmap<float, 1> render(testWidth, testHeight);
renderSDF(render, msdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRender))
fputs("Failed to write test render file.\n", stderr);
}
break;
case MULTI_AND_TRUE:
if ((error = writeOutput<4>(mtsdf, output, format))) {
fprintf(stderr, "%s\n", error);
return 1;
}
if (is8bitFormat(format) && (testRenderMulti || testRender || estimateError))
simulate8bit(mtsdf);
if (estimateError) {
double sdfError = estimateSDFError(mtsdf, shape, transformation, SDF_ERROR_ESTIMATE_PRECISION, fillRule);
printf("SDF error ~ %e\n", sdfError);
}
if (testRenderMulti) {
Bitmap<float, 4> render(testWidthM, testHeightM);
renderSDF(render, mtsdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRenderMulti))
fputs("Failed to write test render file.\n", stderr);
}
if (testRender) {
Bitmap<float, 1> render(testWidth, testHeight);
renderSDF(render, mtsdf, avgScale*range);
if (!SAVE_DEFAULT_IMAGE_FORMAT(render, testRender))
fputs("Failed to write test render file.\n", stderr);
}
break;
default:;
}
return 0;
}
#endif
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