From 3d8f8485f2c40bdde0558c91451a086091a5da81 Mon Sep 17 00:00:00 2001
From: Alessandro Roncone <alecive87@gmail.com>
Date: Wed, 17 Feb 2016 20:12:59 -0500
Subject: [PATCH] Added nsvgDuplicatePath . Also, fixed some minor typos into
 the tutorial. Ref #62

---
 src/nanosvg.h     | 41 +++++++++++++++++++++++++++++++++++++----
 src/nanosvgrast.h |  3 ++-
 2 files changed, 39 insertions(+), 5 deletions(-)

diff --git a/src/nanosvg.h b/src/nanosvg.h
index 91dbdec..3632bf6 100644
--- a/src/nanosvg.h
+++ b/src/nanosvg.h
@@ -45,15 +45,15 @@ extern "C" {
 // NanoSVG can return the paths in few different units. For example if you want to render an image, you may choose
 // to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you may want to use millimeters.
 //
-// The units passed to NanoVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
+// The units passed to NanoSVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
 // DPI (dots-per-inch) controls how the unit conversion is done.
 //
 // If you don't know or care about the units stuff, "px" and 96 should get you going.
 
 
 /* Example Usage:
-	// Load
-	SNVGImage* image;
+	// Load SVG
+	NSVGimage* image;
 	image = nsvgParseFromFile("test.svg", "px", 96);
 	printf("size: %f x %f\n", image->width, image->height);
 	// Use...
@@ -166,7 +166,10 @@ NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi)
 // Important note: changes the string.
 NSVGimage* nsvgParse(char* input, const char* units, float dpi);
 
-// Deletes list of paths.
+// Duplicates a path.
+NSVGpath* nsvgDuplicatePath(NSVGpath* p);
+
+// Deletes an image.
 void nsvgDelete(NSVGimage* image);
 
 #ifdef __cplusplus
@@ -2830,6 +2833,36 @@ error:
 	return NULL;
 }
 
+NSVGpath* nsvgDuplicatePath(NSVGpath* p)
+{
+    NSVGpath* res = NULL;
+
+    if (p == NULL)
+        return NULL;
+
+    res = (NSVGpath*)malloc(sizeof(NSVGpath));
+    if (res == NULL) goto error;
+    memset(res, 0, sizeof(NSVGpath));
+
+    res->pts = (float*)malloc(p->npts*2*sizeof(float));
+    if (res->pts == NULL) goto error;
+    memcpy(res->pts, p->pts, p->npts * sizeof(float) * 2);
+    res->npts = p->npts;
+
+    memcpy(res->bounds, p->bounds, sizeof(p->bounds));
+
+    res->closed = p->closed;
+
+    return res;
+
+error:
+    if (res != NULL) {
+        free(res->pts);
+        free(res);
+    }
+    return NULL;
+}
+
 void nsvgDelete(NSVGimage* image)
 {
 	NSVGshape *snext, *shape;
diff --git a/src/nanosvgrast.h b/src/nanosvgrast.h
index c71d7b4..af5da00 100644
--- a/src/nanosvgrast.h
+++ b/src/nanosvgrast.h
@@ -33,7 +33,8 @@ typedef struct NSVGrasterizer NSVGrasterizer;
 
 /* Example Usage:
 	// Load SVG
-	struct SNVGImage* image = nsvgParseFromFile("test.svg.");
+	NSVGimage* image;
+	image = nsvgParseFromFile("test.svg", "px", 96);
 
 	// Create rasterizer (can be used to render multiple images).
 	struct NSVGrasterizer* rast = nsvgCreateRasterizer();