void parse_svg(const char* fname)
{
agg::svg::parser p(m_path);
p.parse(fname);
m_path.arrange_orientations();
m_path.bounding_rect(&m_min_x, &m_min_y, &m_max_x, &m_max_y);
caption(p.title());
}
virtual void on_draw()
{
typedef agg::pixfmt_bgra32 pixfmt;
typedef agg::renderer_base<pixfmt> renderer_base;
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
pixfmt pixf(rbuf_window());
renderer_base rb(pixf);
renderer_solid ren(rb);
rb.clear(agg::rgba(1,1,1));
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
agg::trans_affine mtx;
ras.gamma(agg::gamma_power(m_gamma.value()));
mtx *= agg::trans_affine_translation((m_min_x + m_max_x) * -0.5, (m_min_y + m_max_y) * -0.5);
mtx *= agg::trans_affine_scaling(m_scale.value());
mtx *= agg::trans_affine_rotation(agg::deg2rad(m_rotate.value()));
mtx *= agg::trans_affine_translation((m_min_x + m_max_x) * 0.5 + m_x, (m_min_y + m_max_y) * 0.5 + m_y + 30);
m_path.expand(m_expand.value());
m_path.render(ras, sl, ren, mtx, rb.clip_box(), 1.0);
ras.gamma(agg::gamma_none());
agg::render_ctrl(ras, sl, ren, m_expand);
agg::render_ctrl(ras, sl, ren, m_gamma);
agg::render_ctrl(ras, sl, ren, m_scale);
agg::render_ctrl(ras, sl, ren, m_rotate);
//agg::gamma_lut<> gl(m_gamma.value());
//unsigned x, y;
//unsigned w = unsigned(width());
//unsigned h = unsigned(height());
//for(y = 0; y < h; y++)
//{
// for(x = 0; x < w; x++)
// {
// agg::rgba8 c = rb.pixel(x, y);
// c.r = gl.inv(c.r);
// c.g = gl.inv(c.g);
// c.b = gl.inv(c.b);
// rb.copy_pixel(x, y, c);
// }
//}
}
virtual void on_draw()
{
typedef agg::pixfmt_bgra32 pixfmt;
typedef agg::renderer_base<pixfmt> renderer_base;
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
pixfmt pixf(rbuf_window());
renderer_base rb(pixf);
renderer_solid ren(rb);
rb.clear(agg::rgba(1,1,1));
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
agg::trans_affine mtx;
ras.gamma(agg::gamma_power(m_gamma.value()));
mtx *= agg::trans_affine_translation((m_min_x + m_max_x) * -0.5, (m_min_y + m_max_y) * -0.5);
mtx *= agg::trans_affine_scaling(m_scale.value());
mtx *= agg::trans_affine_rotation(agg::deg2rad(m_rotate.value()));
mtx *= agg::trans_affine_translation((m_min_x + m_max_x) * 0.5 + m_x, (m_min_y + m_max_y) * 0.5 + m_y + 30);
m_path.expand(m_expand.value());
start_timer();
m_path.render(ras, sl, ren, mtx, rb.clip_box(), 1.0);
double tm = elapsed_time();
unsigned vertex_count = m_path.vertex_count();
ras.gamma(agg::gamma_none());
agg::render_ctrl(ras, sl, rb, m_expand);
agg::render_ctrl(ras, sl, rb, m_gamma);
agg::render_ctrl(ras, sl, rb, m_scale);
agg::render_ctrl(ras, sl, rb, m_rotate);
char buf[128];
agg::gsv_text t;
t.size(10.0);
t.flip(true);
agg::conv_stroke<agg::gsv_text> pt(t);
pt.width(1.5);
sprintf(buf, "Vertices=%d Time=%.3f ms", vertex_count, tm);
t.start_point(10.0, 40.0);
t.text(buf);
ras.add_path(pt);
ren.color(agg::rgba(0,0,0));
agg::render_scanlines(ras, sl, ren);
//agg::gamma_lut<> gl(m_gamma.value());
//unsigned x, y;
//unsigned w = unsigned(width());
//unsigned h = unsigned(height());
//for(y = 0; y < h; y++)
//{
// for(x = 0; x < w; x++)
// {
// agg::rgba8 c = rb.pixel(x, y);
// c.r = gl.inv(c.r);
// c.g = gl.inv(c.g);
// c.b = gl.inv(c.b);
// rb.copy_pixel(x, y, c);
// }
//}
}