void Fixel::render (const Projection& projection, int axis, int slice)
{
if (fixel_tool.do_crop_to_slice && (slice < 0 || slice >= header.dim(axis)))
return;
start (fixel_shader);
projection.set (fixel_shader);
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "line_length"),
line_length * line_length_multiplier);
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "max_value"), value_max);
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "scale_line_length_by_value"),
scale_line_length_by_value);
if (use_discard_lower())
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "lower"), lessthan);
if (use_discard_upper())
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "upper"), greaterthan);
if (color_type == Colour)
gl::Uniform3fv (gl::GetUniformLocation (fixel_shader, "const_colour"), 1, colour);
if (fixel_tool.line_opacity < 1.0) {
gl::Enable (gl::BLEND);
gl::Disable (gl::DEPTH_TEST);
gl::DepthMask (gl::FALSE_);
gl::BlendEquation (gl::FUNC_ADD);
gl::BlendFunc (gl::CONSTANT_ALPHA, gl::ONE);
gl::BlendColor (1.0, 1.0, 1.0, fixel_tool.line_opacity);
} else {
gl::Disable (gl::BLEND);
gl::Enable (gl::DEPTH_TEST);
gl::DepthMask (gl::TRUE_);
}
gl::LineWidth (fixel_tool.line_thickness);
gl::BindVertexArray (vertex_array_object);
if (!fixel_tool.do_crop_to_slice) {
for (size_t x = 0; x < slice_fixel_indices[0].size(); ++x)
gl::MultiDrawArrays (gl::LINES, &slice_fixel_indices[0][x][0], &slice_fixel_sizes[0][x][0], slice_fixel_counts[0][x]);
} else {
gl::MultiDrawArrays (gl::LINES, &slice_fixel_indices[axis][slice][0], &slice_fixel_sizes[axis][slice][0], slice_fixel_counts[axis][slice]);
}
if (fixel_tool.line_opacity < 1.0) {
gl::Disable (gl::BLEND);
gl::Enable (gl::DEPTH_TEST);
gl::DepthMask (gl::TRUE_);
}
stop (fixel_shader);
}
void AbstractFixel::render (const Projection& projection)
{
start (fixel_shader);
projection.set (fixel_shader);
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "length_mult"), voxel_size_length_multipler * user_line_length_multiplier);
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "line_thickness"), line_thickness);
if (use_discard_lower())
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "lower"), lessthan);
if (use_discard_upper())
gl::Uniform1f (gl::GetUniformLocation (fixel_shader, "upper"), greaterthan);
if (ColourMap::maps[colourmap].is_colour)
gl::Uniform3f (gl::GetUniformLocation (fixel_shader, "colourmap_colour"),
colour[0]/255.0f, colour[1]/255.0f, colour[2]/255.0f);
if (fixel_tool.line_opacity < 1.0) {
gl::Enable (gl::BLEND);
gl::Disable (gl::DEPTH_TEST);
gl::DepthMask (gl::FALSE_);
gl::BlendEquation (gl::FUNC_ADD);
gl::BlendFunc (gl::CONSTANT_ALPHA, gl::ONE);
gl::BlendColor (1.0, 1.0, 1.0, fixel_tool.line_opacity);
} else {
gl::Disable (gl::BLEND);
gl::Enable (gl::DEPTH_TEST);
gl::DepthMask (gl::TRUE_);
}
if (!fixel_tool.do_crop_to_slice) {
vertex_array_object.bind();
for (size_t x = 0, N = slice_fixel_indices[0].size(); x < N; ++x) {
if (slice_fixel_counts[0][x])
gl::MultiDrawArrays (gl::POINTS, &slice_fixel_indices[0][x][0], &slice_fixel_sizes[0][x][0], slice_fixel_counts[0][x]);
}
} else {
request_update_interp_image_buffer (projection);
if (GLsizei points_count = regular_grid_buffer_pos.size())
gl::DrawArrays(gl::POINTS, 0, points_count);
}
if (fixel_tool.line_opacity < 1.0) {
gl::Disable (gl::BLEND);
gl::Enable (gl::DEPTH_TEST);
gl::DepthMask (gl::TRUE_);
}
stop (fixel_shader);
}
