to_ndc_aspect()

glm::vec3 MayaFlux::Kinesis::to_ndc_aspect ( double  window_x, double  window_y, uint32_t  width, uint32_t  height  )

inline

Convert window pixel coordinates to NDC, corrected for aspect ratio.

The shorter dimension maps to [-1, +1]; the longer dimension extends beyond. Circles drawn in NDC space remain circular in window space.

Definition at line 131 of file ViewTransform.hpp.

{
    const float aspect = static_cast<float>(width) / static_cast<float>(height);
    float x = (static_cast<float>(window_x) / static_cast<float>(width)) * 2.0F - 1.0F;
    float y = 1.0F - (static_cast<float>(window_y) / static_cast<float>(height)) * 2.0F;
    if (aspect >= 1.0F) {
        x *= aspect; // width is longer: extend X beyond [-1,+1]
    } else {
        y /= aspect; // height is longer: extend Y beyond [-1,+1]
    }
    return { x, y, 0.0F };
}

References width.

Referenced by MayaFlux::normalize_coords_aspect(), and MayaFlux::normalize_coords_aspect().

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