#include "ofxCore.h" #define kOfxInteractActionPenDown "OfxInteractActionPenDown"
handle handle to an interact instance, cast to an OfxInteractHandleinArgs has the following properties on an image effect plugin,
kOfxPropEffectInstance - a handle to the effect for which the interact has been,kOfxInteractPropViewportSize - the openGL viewport size for the instancekOfxInteractPropPixelScale - the scale factor to convert cannonical pixels to screen pixelskOfxInteractPropBackgroundColour - the background colour of the application behind the current viewkOfxPropTime - the effect time at which changed occuredkOfxImageEffectPropRenderScale - the render scale applied to any image fetchedkOfxInteractPropPenPosition - postion of the pen in,kOfxInteractPropPenViewportPosition - postion of the pen in,kOfxInteractPropPenPressure - the pressure of the pen,outArgs is redundant and is set to NULL.
This action is issued when a pen transitions for the 'up' to the 'down' state.
No openGL calls should be issued by the plug-in during this action.
kOfxActionCreateInstance has been called on the instance handle,kOfxInteractActionGainFocus called on it
kOfxStatOK, the host should not pass
the pen motion to any other interactive object it may own that shares the same view.
kOfxStatOK, the action was trapped and the host should not pass the event to other objects it may ownkOfxStatReplyDefault, the action was not trapped and the host can deal with it if it wants