glyph geometry in a more usable form

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 Kaushik Viswanathan
+Copyright (c) 2021 kv01
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,11 +1,9 @@
 # ttf-parser
-A bare-bones, single header file ttf font parser written in C++ for fast GPU font rendering.
+A bare-bones, single header file ttf font parser for font rendering.
 
 ## How to use
 * Define TTF_FONT_PARSER_IMPLEMENTATION in ONE cpp file to enable the implementation in the header file.  
 * Use *parse_file* or *parse_data* to get a *FontData* structure with all font metrics and glyph data needed for rendering common fonts.
-* Note that *parse_file* is currently synchronous except when compiled with emscripten but will still execute the callback
+* *parse_file* is currently synchronous except when compiled with emscripten but will still execute the callback
 
-A glyph is represented as a set of triangles (p_x, p1, p2) where p_x is the center of the glyph and
-p1 and p2 are sequential points on the curve. Quadratic splines will have 2 tiangles associated with them,
-(p_x, p1, p2) as before and (p1, p_c, p2) where p_c is the spline control point.
+Glyph geometry is a set of lines and quadratic curves

examples/parseTest.cpp

@@ -4,26 +4,42 @@
 */
 
 #include <stdio.h>
+#include <cwchar>
 #include <chrono>
 #include <thread>
 
 #define TTF_FONT_PARSER_IMPLEMENTATION
 #include "../src/ttfParser.h"
 
-/*
-* Change to a valid font location
-*/
+//Change to a valid font location
 const char* font_path = "test/fonts/cm-unicode/cmunrm.ttf";
 
 void font_parsed(void* args, void* _font_data, int error) {
 	if (error) {
 		*(uint8_t*)args = error;
-		printf("Unable to parse font\n");
+		printf("Unable to parse font %s\n", font_path);
 	}
 	else {
 		TTFFontParser::FontData* font_data = (TTFFontParser::FontData*)_font_data;
 		printf("Font: %s %s parsed\n", font_data->font_names.begin()->font_family.c_str(), font_data->font_names.begin()->font_style.c_str());
-		printf("Number of glyphs: %d\n", font_data->glyphs.size());
+		printf("Number of glyphs: %d\n", uint32_t(font_data->glyphs.size()));
+
+		//step through glyph geometry
+		{
+			for (const auto& glyph_iterator : font_data->glyphs) {
+				uint32_t num_curves = 0, num_lines = 0;
+				for (const auto& path_list : glyph_iterator.second.path_list) {
+					for (const auto& geometry : path_list.geometry) {
+						if (geometry.is_curve)
+							num_curves++;
+						else
+							num_lines++;
+					}
+				}
+				wprintf(L"glyph 0x%x %lc: %d quadratic curves and %d lines\n", glyph_iterator.first, glyph_iterator.first, num_curves, num_lines);
+			}
+		}
+
 		*(uint8_t*)args = 1;
 	}
 }
@@ -39,4 +55,6 @@ int main() {
 	}
 
 	getchar();
-}
+
+	return 0;
+}