Bug in nsvg__scaleToViewbox()

[maxlem]

When no viewWidth/viewHeight is specified, it is determined from content's bounds max element instead of bound's max - min.

the following patch works for me on this test file (DO NOT expect it to render, meant to be used with a debugguer). I'm not sure the patch does the right thing when multiple paths are involved (one would use the extrema of path`s bounds)

<?xml version="1.0" encoding="utf-8"?><svg version="1.1" id="Layer_1"><path d="M-24.5, 0L0, -24.5L8.80764, -26.0009L41.0517, -12.645"/></svg>

Index: trunk/src/nanosvg.h
===================================================================
--- trunk/src/nanosvg.h (revision 50)
+++ trunk/src/nanosvg.h (working copy)
@@ -2497,13 +2497,13 @@
        if (p->image->width > 0)
            p->viewWidth = p->image->width;
        else
-           p->viewWidth = bounds[2];
+           p->viewWidth = bounds[2] - bounds[0];
    }
    if (p->viewHeight == 0) {
        if (p->image->height > 0)
            p->viewHeight = p->image->height;
        else
-           p->viewHeight = bounds[3];
+           p->viewHeight = bounds[3] - bounds[1];
    }
    if (p->image->width == 0)
        p->image->width = p->viewWidth;

[Edited: removed non pertinent part of the patch]

[memononen]

Closing this as the fix got merged in another PR. Thanks for taking the time to fix it!