place() [1/2]

AABB2D MayaFlux::Kinesis::place ( AABB2D  anchor, Side  side, float  w, float  h, float  gap = 0.F, Align  align = Align::Center  )

inlinenoexcept

Compute a region of size (w, h) positioned relative to anchor.

Parameters

anchor	Region to place against.
side	Direction of placement.
w	Width in NDC units. Ignored when side is vertical and align is Span.
h	Height in NDC units. Ignored when side is horizontal and align is Span.
gap	Separation from the anchor edge. Ignored for Side::Over.
align	Cross-axis alignment.

Definition at line 534 of file Bounds.hpp.

{
    const glm::vec2 c = anchor.center();
 
    if (side == Side::Over) {
        return { .min = { c.x - w * 0.5F, c.y - h * 0.5F },
            .max = { c.x + w * 0.5F, c.y + h * 0.5F } };
    }
 
    if (side == Side::Below || side == Side::Above) {
        float x0 {};
        float x1 {};
        switch (align) {
        case Align::Center:
            x0 = c.x - w * 0.5F;
            x1 = c.x + w * 0.5F;
            break;
        case Align::Start:
            x0 = anchor.min.x;
            x1 = anchor.min.x + w;
            break;
        case Align::End:
            x0 = anchor.max.x - w;
            x1 = anchor.max.x;
            break;
        case Align::Span:
            x0 = anchor.min.x;
            x1 = anchor.max.x;
            break;
        }
        return side == Side::Below
            ? AABB2D { .min = { x0, anchor.min.y - gap - h }, .max = { x1, anchor.min.y - gap } }
            : AABB2D { .min = { x0, anchor.max.y + gap }, .max = { x1, anchor.max.y + gap + h } };
    }
 
    float y0 {};
    float y1 {};
    switch (align) {
    case Align::Center:
        y0 = c.y - h * 0.5F;
        y1 = c.y + h * 0.5F;
        break;
    case Align::Start:
        y0 = anchor.max.y - h;
        y1 = anchor.max.y;
        break;
    case Align::End:
        y0 = anchor.min.y;
        y1 = anchor.min.y + h;
        break;
    case Align::Span:
        y0 = anchor.min.y;
        y1 = anchor.max.y;
        break;
    }
    return side == Side::Right
        ? AABB2D { .min = { anchor.max.x + gap, y0 }, .max = { anchor.max.x + gap + w, y1 } }
        : AABB2D { .min = { anchor.min.x - gap - w, y0 }, .max = { anchor.min.x - gap, y1 } };
}

References Above, Below, MayaFlux::Kinesis::AABB2D::center(), Center, End, h, MayaFlux::Kinesis::AABB2D::min, Over, Right, Span, and Start.

Referenced by place().

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