New method to manage the Y coordinate flip for SVG output - gsl-shell.git - gsl-shell

diff --git a/agg-plot/canvas_svg.h b/agg-plot/canvas_svg.h
index 96c07b31..23d669e1 100644
--- a/agg-plot/canvas_svg.h
+++ b/agg-plot/canvas_svg.h

@@ -25,7 +25,8 @@ static const char *svg_end = "</svg>\n";

class canvas_svg {

public:

- canvas_svg(FILE *f) : m_output(f), m_current_id(0) { }

+ canvas_svg(FILE *f, double height):

+ m_output(f), m_height(height), m_current_id(0) { }

void clip_box(const agg::rect_base<int>& clip) { }

@@ -35,7 +36,7 @@ public:

void draw(VertexSource& vs, agg::rgba8 c)

{

str path;

- svg_coords_from_vs(&vs, path);

+ svg_coords_from_vs(&vs, path, m_height);

str s = svg_fill_path(path, m_current_id++, c);

writeln(m_output, s, " ");

}

@@ -44,7 +45,7 @@ public:

void draw_outline(VertexSource& vs, agg::rgba8 c)

{

str path;

- svg_coords_from_vs(&vs, path);

+ svg_coords_from_vs(&vs, path, m_height);

str s = svg_stroke_path(path, default_stroke_width, m_current_id++, c);

writeln(m_output, s, " ");

}

@@ -64,6 +65,7 @@ public:

private:

FILE *m_output;

+ double m_height;

int m_current_id;

};