box_transform()

MAYAFLUX_API glm::mat4 MayaFlux::Kinesis::box_transform	(	const AABB3D &	source,
		const AABB3D &	target
	)

Transform that scales and translates one box onto another.

Parameters

source	Box to map from
target	Box to map onto

Returns

Matrix taking source onto target, scaling each axis independently

An axis along which source has no extent, a flat mesh for example, is not scaled and is only centered. A target with no extent along an axis flattens that axis. For a uniform or unscaled fit, pass a target already resized and centered to suit.

Definition at line 262 of file GeometryPrimitives.cpp.

{
    constexpr float epsilon = 1.0e-6F;
 
    const glm::vec3 from = source.extent();
    const glm::vec3 to = target.extent();
    const glm::bvec3 scalable = glm::greaterThan(from, glm::vec3(epsilon));
    const glm::vec3 scale = glm::mix(glm::vec3(1.0F), to / glm::max(from, glm::vec3(epsilon)), scalable);
 
    return glm::translate(glm::mat4(1.0F), target.center())
        * glm::scale(glm::mat4(1.0F), scale)
        * glm::translate(glm::mat4(1.0F), -source.center());
}

References MayaFlux::Kinesis::AABB3D::center(), MayaFlux::Kinesis::AABB3D::extent(), and scale().

Referenced by MayaFlux::Nexus::Mantle::refresh().

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