Rendering SVG's and changing color?

OpenGL Development
#1

Im wanting all graphics in my project to be salable but i cant seem to figure out how to render SVG’s in LWJGL v2 and its becoming a nightmare, any ideas?

#2

One way is to use NV_path_rendering, which works absolutely fantastically. I’m hoping it finds its way into the ARB specs soon.

Cas :slight_smile:

#3

I looked at NanoSVG and NanoVG recently and the plan is to add bindings to both after LWJGL 3.0 is released.

#4

So i’m guessing (at work cant check), you would read the SVG to get all the points, add some scaling factor and feed it into that?

#5

Well… er… not exactly, rendering SVG is a bit more complex than that. Have a good read up on it on Nvidia’s site when you get back from work.

Cas :slight_smile:

#6

Wouldn’t a pure port of NanoVG be more useful? NanoSVG seems to be less interesting as there are already a few simple SVG parsers written in Java including SVG Salamander.

#7

If it improved the original in some way. If someone had the time to write it. If someone had the time to maintain it. Then, yes, it would be useful.

#8

I have created a class that lets me load SVG’s and im working on animating them now :smiley:

#9

Hi, I’m look to use nanovg to render the data parse from nanosvg.
Hi, can you help me correct this code?

NSVGimage* g_image = = nsvgParseFromFile(“drawing.svg”, “px”, 96.0f);
NSVGshape * shape;
NSVGpath * path;
int i;

nvgStrokeColor(vg, nvgRGBA(0,0,0,255));
for (shape = g_image->shapes; shape != NULL; shape = shape->next) {
    
    nvgStrokeWidth(vg, shape->strokeWidth);
    
    for (path = shape->paths; path != NULL; path = path->next) {
        for (i = 0; i < path->npts-1; i += 3) {
            float* p = &path->pts[i*2];

            nvgBeginPath(vg);
            nvgMoveTo(vg, p[0], p[1]);
            nvgBezierTo(vg, p[2], p[3], p[4], p[5], p[6], p[7]);
            nvgStroke(vg);
        }
    }
}