void render_pattern<image_rgba8>(rasterizer & ras,
marker_svg const& marker,
agg::trans_affine const& tr,
double opacity,
image_rgba8 & image)
{
using pixfmt = agg::pixfmt_rgba32_pre;
using renderer_base = agg::renderer_base<pixfmt>;
using renderer_solid = agg::renderer_scanline_aa_solid<renderer_base>;
agg::scanline_u8 sl;
mapnik::box2d<double> const& bbox = marker.bounding_box() * tr;
mapnik::coord<double,2> c = bbox.center();
agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y);
mtx.translate(0.5 * bbox.width(), 0.5 * bbox.height());
mtx = tr * mtx;
agg::rendering_buffer buf(image.bytes(), image.width(), image.height(), image.row_size());
pixfmt pixf(buf);
renderer_base renb(pixf);
mapnik::svg::vertex_stl_adapter<mapnik::svg::svg_path_storage> stl_storage(marker.get_data()->source());
mapnik::svg::svg_path_adapter svg_path(stl_storage);
mapnik::svg::svg_renderer_agg<mapnik::svg::svg_path_adapter,
agg::pod_bvector<mapnik::svg::path_attributes>,
renderer_solid,
pixfmt > svg_renderer(svg_path,
marker.get_data()->attributes());
svg_renderer.render(ras, sl, renb, mtx, opacity, bbox);
}
inline int import_image(image_rgba8 const& im,
WebPPicture & pic,
bool alpha)
{
std::size_t stride = sizeof(image_rgba8::pixel_type) * im.width();
if (alpha)
{
return WebPPictureImportRGBA(&pic, im.bytes(), static_cast<int>(stride));
}
else
{
#if (WEBP_ENCODER_ABI_VERSION >> 8) >= 1
return WebPPictureImportRGBX(&pic, im.bytes(), static_cast<int>(stride));
#else
return WebPPictureImportRGBA(&pic, im.bytes(), static_cast<int>(stride));
#endif
}
}