New Live Drawing Plugin in v2.5.2

DusX

The plugin should be included with the 2.5.2 install of isadora.

DIarmuiD

of course. sorry.

primaldivine

Hi Mark,

Thanks. Great addition!

I noticed that the help topics (when mousing over) for each parameter are offset to the parameter below by mistake, so for instance the description of the 'capture' input describes the next one down instead, ie the 'joint type'.

It seems to be correct from the 'line width' downwards.

Jamie

mark

@primaldivine

Thanks Jamie. It's fixed for the next release.

Best Wishes,
Mark

juliejao

Wow, this is so great. I love it.

mark_m

@mark

Do you have any sense in how difficult it would be to bring the sensitivity of a Wacom pen into this actor? So that the live drawing actor recognises pressure to affect the width of the line and tilt, to change the pen shape?

Thanks

mark_m

@mark_m

I see Wacom do have an SDK for the 'feel' which is I think all one might one want...
http://developer.wacom.com/en-...

dbini

I used a Wacom with this recently and set up a 2D Velocity to change the size of line. which was nice.

mark_m

@dbini

Yes, that's rather how @Mark did it in the demo file, though his method was slightly more sophisticated than the 2d velocity, but the result the same: the faster the movement, the wider the stroke. But that's not really how we draw, is it? We use pressure as well as speed to vary our mark making, and as well as width there's also opacity that's controlled by pressure.

eight

@mark Hi Mark, thanks for this update, now FPS does not fall down to 6 as it used to with the CPU drawing. However, in the old plugin I'd put a motion blur right before the output projector, and once the reset button was pressed once that would fade the drawing out slowly. With the new plugin that approach does not work -- I have to keep pressing the reset to fade out the drawing.

Is it possible to add the fade out feature to this new gpu drawing?

Thanks.

UPD. I fed a black movie into gpu input of the line drawing operator, and that solved the fading issue.

mark

The reason it doesn't fade is that it does not update the output unless you change something... a behavior you'll find in other actors that generate images like the Text Draw actor. This is for efficiency: there's no reason to send a new frame of video if the image has not changed. Your solution of adding an input to the background is a good way of handling this.

Best Wishes,
Mark