ndc_size_to_pixels() [2/2]

glm::uvec2 MayaFlux::Kinesis::ndc_size_to_pixels ( const glm::vec2 &  ndc_size, uint32_t  width, uint32_t  height  )

inline

Convert an NDC-space size (extent) to integer pixel dimensions.

NDC spans 2.0 across each axis. An NDC size of (1.8, 0.1) on a 1280x720 window resolves to (1152, 36) pixels. Both components are clamped to at least 1 pixel so degenerate textures and zero-extent images are avoided.

Size counterpart to to_window(), which converts an NDC position. Use to_window for positions, ndc_size_to_pixels for extents (text image budgets, capture target dimensions, offscreen image sizes matched to an on-screen NDC region).

Parameters

ndc_size	NDC extent (each component in [0, 2]).
width	Window width in pixels.
height	Window height in pixels.

Returns

Integer pixel dimensions, each at least 1.

Definition at line 201 of file ViewTransform.hpp.

{
    const auto px = static_cast<uint32_t>(ndc_size.x * 0.5F * static_cast<float>(width));
    const auto py = static_cast<uint32_t>(ndc_size.y * 0.5F * static_cast<float>(height));
    return { std::max(px, 1U), std::max(py, 1U) };
}

References width.