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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/msdfgen/core/export-svg.cpp
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#include "export-svg.h"

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#include <cstdio>

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#include "edge-segments.h"

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namespace msdfgen {

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static void writeSvgCoord(FILE *f, Point2 coord) {

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    fprintf(f, "%.17g %.17g", coord.x, coord.y);

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}

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static void writeSvgPathDef(FILE *f, const Shape &shape) {

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    bool beginning = true;

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    for (const Contour &c : shape.contours) {

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        if (c.edges.empty())

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            continue;

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        if (beginning)

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            beginning = false;

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        else

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            fputc(' ', f);

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        fputs("M ", f);

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        writeSvgCoord(f, c.edges[0]->controlPoints()[0]);

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        for (const EdgeHolder &e : c.edges) {

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            const Point2 *cp = e->controlPoints();

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            switch (e->type()) {

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                case (int) LinearSegment::EDGE_TYPE:

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                    fputs(" L ", f);

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                    writeSvgCoord(f, cp[1]);

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                    break;

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                case (int) QuadraticSegment::EDGE_TYPE:

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                    fputs(" Q ", f);

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                    writeSvgCoord(f, cp[1]);

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                    fputc(' ', f);

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                    writeSvgCoord(f, cp[2]);

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                    break;

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                case (int) CubicSegment::EDGE_TYPE:

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                    fputs(" C ", f);

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                    writeSvgCoord(f, cp[1]);

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                    fputc(' ', f);

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                    writeSvgCoord(f, cp[2]);

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                    fputc(' ', f);

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                    writeSvgCoord(f, cp[3]);

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                    break;

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            }

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        }

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        fputs(" Z", f);

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    }

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}

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bool saveSvgShape(const Shape &shape, const char *filename) {

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    if (FILE *f = fopen(filename, "w")) {

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        fputs("<svg xmlns=\"http://www.w3.org/2000/svg\"><path", f);

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        if (!shape.inverseYAxis)

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            fputs(" transform=\"scale(1 -1)\"", f);

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        fputs(" d=\"", f);

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        writeSvgPathDef(f, shape);

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        fputs("\"/></svg>\n", f);

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        fclose(f);

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        return true;

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    }

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    return false;

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}

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bool saveSvgShape(const Shape &shape, const Shape::Bounds &bounds, const char *filename) {

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    if (FILE *f = fopen(filename, "w")) {

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        fprintf(f, "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"%.17g %.17g %.17g %.17g\"><path", bounds.l, bounds.b, bounds.r-bounds.l, bounds.t-bounds.b);

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        if (!shape.inverseYAxis)

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            fprintf(f, " transform=\"translate(0 %.17g) scale(1 -1)\"", bounds.b+bounds.t);

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        fputs(" d=\"", f);

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        writeSvgPathDef(f, shape);

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        fputs("\"/></svg>\n", f);

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        fclose(f);

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        return true;

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    }

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    return false;

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}

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}

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