How to warp a video mapping

JJHP3

Wow - thanks you! I will attempt... what a wonderful group of people work with Isadora!

DusX

Another option worth looking at is chaining together IzzyMap mappings. I find this adds more flexibility.
I often use one projector to mask and place my mapping content. This projector is sending to a virtual stage.
Then I use Get Stage Image to grab that IzzyMap work, and feed it into a second Projector where I use IzzyMap to Grid Warp as required.
I find this 2 phase approach to be much less confusing and easier to update over time.

JJHP3

@dusx Well I sure hadn't thought of that approach! I'll give it a try - thanks

JJHP3

@dusx And a secondary question about grid mapping... not sure how to ask, but if one has a 6 x 6 square grid, is there any way to grab and move one of the corners and all the other grid lines will warp proportionally? Or is grid a point by point process?

dbini

@jjhp3

as far as I know, grid mapping is done on individual points, but it would be really useful if other points could react - it would be a bit like the 'smudge' tool in photoshop.

jfg

@jjhp3

Yes and no. If you select multiple points (using the Shift key) and hold and drag a line between the selected points, all the selected points will move together. No, you can’t change the curve for several points. You can only do this for each point individually. Unless I didn't find how.

Best regards,

Jean-François

jfg

@jjhp3

Attached is a column made with Izzy Map and the Global Edge Blend Mask to make a shadow. Works if you don't need another background as black

you can also use the Edge Blend Mask actor instead of the global one.

I join a 3ds column if you prefer to use a 3d projector. You don't need the jpg file for Isadora but you must use it (or another one) as a texture in the 3d programm for the video texture to work. If you don't have the jpg file in the same folder as the 3ds file, you will get an error message in Isadora. Don't care and go ahead. If you have the JPG file, it will no longer be visible afterwards.

column.zip

JJHP3

@jfg Thank you thank you! Not only did these insightful suggestions solve my problem, but they offer me new avenues and ideas about the next project / possibilities. Isadora is so deep, yet at times stubborn - but there is almost always a path to success.

Woland

@jjhp3 said:

is there any way to grab and move one of the corners and all the other grid lines will warp proportionally

These little guys control the different types of mirroring (horizontal, vertical, and diagonal):

DusX

@jjhp3 said:

point by point process

Yes, only the selected points will move, and they all move the same amount. I 'stretch' type move would be a great feature request though. I will add this.