compute_pan_zoom_view_transform()

MAYAFLUX_API ViewTransform MayaFlux::Kinesis::compute_pan_zoom_view_transform	(	const PanZoom2DState &	state,
		float	aspect
	)

Build a ViewTransform from the current PanZoom2DState.

View matrix is identity. Projection is a symmetric ortho frustum centred on state.pan with half-height state.zoom.

Parameters

state	PanZoom2D state (read-only).
aspect	Framebuffer width / height.

Returns

ViewTransform ready for push constant upload.

Definition at line 20 of file PanZoom2DState.cpp.

{
    const float hw = st.zoom * aspect;
    const float hh = st.zoom;
    return {
        .view = glm::mat4(1.0F),
        .projection = glm::ortho(
            st.pan.x - hw, st.pan.x + hw,
            st.pan.y - hh, st.pan.y + hh,
            st.near_plane, st.far_plane)
    };
}

References MayaFlux::Kinesis::PanZoom2DState::far_plane, MayaFlux::Kinesis::PanZoom2DState::near_plane, MayaFlux::Kinesis::PanZoom2DState::pan, and MayaFlux::Kinesis::PanZoom2DState::zoom.

Referenced by MayaFlux::bind_pan_zoom_preset().

Here is the caller graph for this function: