André Rangel

Any orientation on hot to do a compound shape resulting of a plane and a circle? Something like Shape Modes on Illustrator Pathfinder.

jit-gl-gridshape-compound-of-two-shapes

I think what you need is jit.xfade, you can create two jit.gl.gridshape whit matrixoutput 1 and then send them to jit.xfade and back to jit.gl.render and there you go.

Thank you for your answer. In fact I did not try your approach, instead I tried two jit.gl.gridshape with matrix output 1 and send them to a jit.op... I tried different operators but i did not manage what I pretend. Let me be more clear:

I want to cut of a square inside or inscribed in a circle... something like 

https://www.gmatpill.com/images/PS/circle_inscribed_square.png

 being white the erase_color... so we can look through the square hole.

If you have any idea on how to do that I appreciate!

Thank you for your answer. In fact I did not try your approach, instead I tried two jit.gl.gridshape  with matrix output 1 and send them to a jit.op... I tried different operators but i did not manage what I pretend. Let me be more clear:

I want to cut of a square inside or inscribed in a circle... something like https://www.gmatpill.com/images/PS/circle_inscribed_square.png being white the erase_color... so we can look through the square hole.

I think this needs to be done with textures/color.

Send both shapes to a jit.gl.node @erase color 0.5 0.5 0.5 1.

Then gridshape @shape plane @color 1. 1. 1. 1. @ layer 0

Gridshape @ shape circle @ color 0. 0. 0. 1. @ layer 1

Apply all movement and rotation instructions to both gridshapes.

I think this needs to be done with textures/color.
Send both shapes to a jit.gl.node @erase color 0.5 0.5 0.5 1.
Then gridshape @shape  plane @color 1. 1. 1. 1. @ layer 0
Gridshape @ shape circle @ color 0. 0. 0. 1. @ layer 1
Apply all movement and rotation instructions to both gridshapes.


Missed the part with it being see through.

I wouldn't try to make the basic shape in max.

Create a circle and a cube, use the boolean modifier to cut out the square shape from the circle.

Missed the part with it being see through.
I wouldn't try to make the basic shape in max.
Download blender.
Create a circle and a cube, use the boolean modifier to cut out the square shape from the circle.
Export as dae model
import with jit.gl.model.


Thanks Andro, but I want to be able to change the size of the square inside de circle ;) Circle fixed size and square variable size.

Well thats not so hard if you get a little creative.

The square shape can be defined as a few vertex points.

By using jit.gl.model @matrixoutput 1 to a jit.gl.mesh

Then only altering the vertex points of the square form (x,y vertexes only)

Well thats not so hard if you get a little creative.
The square shape can be defined as a few vertex points.
By using jit.gl.model @matrixoutput 1  to a jit.gl.mesh
Then only altering the vertex points of the square form (x,y vertexes only)
then you can change the square form.
Start experimenting !


I managed something with blend_modes... We can see the background color through the square inside the circle but if a place a videoplane behind the circle and the square I can't see the videoplane any longer :-/

jit.gl.gridshape compound of two shapes