Constraint picking in a physics world The jit.phys.picker object responds to mouse clicks and drags in the destination by creating a constraint on jit.phys.body objects intersecting with the mouse. Multi-touch picking is facilitated by the touch message. Cycling '74 TEXT_HERE messages in TEXT_HERE TEXT_HERE mouse picker messages TEXT_HERE dumpout TEXT_HERE Create or update a multi-touch picking point. Update the multi-touch point at index (or create if doesn't exist). The constraint is enabled if down is 1, and the position is set from screen-x and screen-y. Intersecting body The name of the jit.phys.body currently intersecting with the mouse. Dynamics enable flag Enable/disable dynamic constraint picking intersecting bodies (default = 1). Enable picker in simulation Enable the picker contraint and ray-testing in the physics simulation (default = 1). Name of this object's collision filter-class. Set the name of this object's collision filter-class (default = default). Other objects most specify the filterclass name in their filters list to enable collisions with this object. Maximum allowed unique names is 10. List of filterclass names this object collides with Specify a list of filterclass names to enable collisions with (default = all). Possible values include all and default. Additional values include any user-specified filterclass names (maximum allowed = 10). Hover enable flag Enable/disable mouse hovering allowing for picking without the mouse button down (default = 0). The local constraint position The local-space constraint position on the picked body (default = 0 0 0). Enable output of position values Enable/disable the output of local and world position values when an object is selected(default = 0). When enabled the local position on the clicked object, and the world-space position of the constraint are output following the object name and mouse-state. Constraint picking mode Determines how the constraint is applied to the intersecting body (default = surface). The constraint is applied to the bodies center of mass TEXT_HERE The constraint is applied to the intersecting surface point TEXT_HERE The constraint position The current constraint picking position (default = 0 0 0). Constraint strength value Set the constraint strength (default = 0.2). Determines what proportion of the joint error will be fixed each simulation step. Values between 0.1 and 0.8 are recommended. Constraint stretch value Set the constraint stretch (default = 0.0). Setting to a positive value allows forces acting on rigid bodies to violate the constraint by an amount proportional to the stretch value. UI priority value UI priority value (default = -800). When multiple UI objects are listening to the same window, ui_priority determines the order objects receive input. Lower values test first. Name of the context the constraint picker is bound to The name of a jit.phys.world context this constraint picker is bound to. When an intersection occurs, the jit.phys.body name and current mouse-state is sent out the leftmost outlet. If dynamics is enabled, a point-to-point constraint is created on the picked body that persists until the mouse button is released. When dragging a rigid-body with dynamics enabled, holding down the option key will move the object towards and away from the camera. If the option key is held and the mouse is released, the constraint will persist, allowing the mouse to be repositioned on the rigid-body.