color_scale.cxx

#include "color_scale.h"
 
namespace cgv {
    namespace render {
 
void configure_color_scale(cgv::render::context& ctx, cgv::render::shader_program& prog, cgv::media::ColorScale cs, float window_zero_position)
{
    bool is_bipolar = false;
    if (cs >= cgv::media::CS_NAMED) {
        const auto& scs = cgv::media::query_named_color_scale(cgv::media::query_color_scale_names()[cs - cgv::media::CS_NAMED], &is_bipolar);
        prog.set_uniform(ctx, "nr_color_scale_samples[0]", (int)scs.size());
        prog.set_uniform_array(ctx, "color_scale_samples", scs);
    }
    prog.set_uniform(ctx, "color_scale_index[0]", (int)std::min(cs, cgv::media::CS_NAMED));
    prog.set_uniform(ctx, "color_scale_is_bipolar[0]", is_bipolar);
    if (is_bipolar)
        prog.set_uniform(ctx, "window_zero_position[0]", window_zero_position);
}
 
void configure_color_scale(
    cgv::render::context& ctx, cgv::render::shader_program& prog,
    cgv::media::ColorScale cs[2], float window_zero_position[2])
{
    const std::vector<rgb>* scs_ptrs[2] = { 0, 0 };
    int nr_color_scale_samples[2] = { 0, 0 };
    int color_scale_index[2];
    int color_scale_is_bipolar[2];
    for (unsigned idx = 0; idx < 2; ++idx) {
        color_scale_is_bipolar[idx] = 0;
        color_scale_index[idx] = (int)std::min(cs[idx], cgv::media::CS_NAMED);
        if (cs[idx] >= cgv::media::CS_NAMED) {
            bool is_bipolar;
            scs_ptrs[idx] = &cgv::media::query_named_color_scale(cgv::media::query_color_scale_names()[cs[idx] - cgv::media::CS_NAMED], &is_bipolar);
            color_scale_is_bipolar[idx] = is_bipolar ? 1 : 0;
            nr_color_scale_samples[idx] = (int)scs_ptrs[idx]->size();
        }
    }
    prog.set_uniform_array(ctx, "nr_color_scale_samples", nr_color_scale_samples, 2);
    std::vector<rgb> colors(32 + nr_color_scale_samples[1]);
    if (scs_ptrs[0])
        std::copy(scs_ptrs[0]->begin(), scs_ptrs[0]->end(), colors.begin());
    if (scs_ptrs[1])
        std::copy(scs_ptrs[1]->begin(), scs_ptrs[1]->end(), colors.begin()+32);
    prog.set_uniform_array(ctx, "color_scale_samples", colors);
    prog.set_uniform_array(ctx, "color_scale_index", color_scale_index, 2);
    prog.set_uniform_array(ctx, "color_scale_is_bipolar", color_scale_is_bipolar, 2);
    prog.set_uniform_array(ctx, "window_zero_position", window_zero_position, 2);
}
 
 
    }
}