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improved comments

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This commit is contained in:
Alberto Valverde 2011-09-16 14:38:36 +00:00
parent 4ff5404a57
commit 43dd7978cf
1 changed files with 4 additions and 2 deletions
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6
src/warp.cpp
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@ -82,8 +82,7 @@ void reproject_raster(raster &target, raster const& source,
}
prj_trans.backward(xs.getData(), ys.getData(), NULL, mesh_nx*mesh_ny);
// warp image using projected mesh points using bilinear interpolation
// inside mesh cell
// Initialize AGG objects
typedef agg::pixfmt_rgba32 pixfmt;
typedef pixfmt::color_type color_type;
typedef agg::renderer_base<pixfmt> renderer_base;
@ -111,6 +110,8 @@ void reproject_raster(raster &target, raster const& source,
img_accessor_type ia(pixf_tile);
agg::span_allocator<color_type> sa;
// Initialize filter
agg::image_filter_lut filter;
scaling_method_e scaling_method = get_scaling_method_by_name(
scaling_method_name);
@ -151,6 +152,7 @@ void reproject_raster(raster &target, raster const& source,
filter.calculate(agg::image_filter_blackman(filter_radius), true); break;
}
// Project mesh cells into target interpolating raster inside each one
for(j=0; j<mesh_ny-1; j++) {
for (i=0; i<mesh_nx-1; i++) {
double polygon[8] = {xs(i,j), ys(i,j),