follow_attachment()

MAYAFLUX_API void MayaFlux::Nexus::follow_attachment	(	Attachment &	attachment,
		std::optional< glm::vec3 > &	position,
		const std::optional< glm::quat > &	orientation
	)

Set position from the buffer, or fold an outside move into the attachment.

Parameters

attachment	Attachment to follow.
position	Position of the Agent. Set if empty.
orientation	Orientation of the Agent, if it has one.

Definition at line 107 of file Attachment.cpp.

{
    const glm::quat rotation = frame(orientation);
    glm::vec3 placed = glm::vec3(*attachment.transform * glm::vec4(attachment.anchor, 1.0F));
 
    if (position && *position != attachment.applied) {
        const glm::vec3 delta = *position - attachment.applied;
        if (attachment.config.on_move == AttachConfig::OnMove::Carry) {
            *attachment.transform = glm::translate(glm::mat4(1.0F), delta) * *attachment.transform;
            placed += delta;
        } else {
            attachment.config.offset += glm::inverse(rotation) * delta;
        }
    }
 
    position = placed + rotation * attachment.config.offset;
    attachment.applied = *position;
}

References MayaFlux::Nexus::Attachment::anchor, MayaFlux::Nexus::Attachment::applied, MayaFlux::Nexus::AttachConfig::Carry, MayaFlux::Nexus::Attachment::config, MayaFlux::Nexus::AttachConfig::offset, MayaFlux::Nexus::AttachConfig::on_move, position, and MayaFlux::Nexus::Attachment::transform.

Referenced by MayaFlux::Nexus::Agent::follow_attachment(), and MayaFlux::Nexus::Emitter::follow_attachment().

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