MayaFlux::Kinesis::PanZoom2DState Struct Reference

Mutable 2D pan/zoom navigation state. More...

#include <PanZoom2DState.hpp>

Collaboration diagram for MayaFlux::Kinesis::PanZoom2DState:

Public Attributes
bool	drag_held { false }
float	far_plane { 1.0F }
bool	first_mouse { true }
double	last_x { 0.0 }
double	last_y { 0.0 }
float	max_zoom { 10000.0F }
float	min_zoom { 0.001F }
float	near_plane { -1.0F }
glm::vec2	pan { 0.0F, 0.0F }
	World-space pan offset.
float	scroll_speed { 0.1F }
float	zoom { 1.0F }
	Orthographic half-height.

Detailed Description

Mutable 2D pan/zoom navigation state.

Pan offset and zoom (orthographic half-height) are the only mutable fields. The ViewTransform is purely orthographic: view is identity, projection is derived each frame as ortho(-zoom*aspect + pan.x, zoom*aspect + pan.x, -zoom + pan.y, zoom + pan.y).

Construct via make_pan_zoom_state(). Update via apply_pan_zoom_pan() and apply_pan_zoom_scroll(), then call compute_pan_zoom_view_transform() each frame.

Definition at line 33 of file PanZoom2DState.hpp.

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The documentation for this struct was generated from the following file:

• PanZoom2DState.hpp