topic Re: Hotspot rotation example that rotates horizontally and vertically in GDL

Hotspot rotation example that rotates horizontally and vertically

Domagoj Lukinic — Tue, 03 Dec 2024 14:12:23 GMT

Hi all!

Can someone proved me with an example code of 2 hotspots that rotate horizontally and vertically

For example you have a box that you rotate 35 degrees horizontally and then rotate it 35 degrees vertically (hotspot follows rotation)

Thank you in advance!

Re: Hotspot rotation example that rotates horizontally and vertically

Barry Kelly — Tue, 03 Dec 2024 15:00:01 GMT

The problem is you do not want to rotate the horizontal hotspot code (ROTz) horizontally but you do want to rotate it vertically.

And you don't want to rotate the vertical hotspot code (ROTx) vertically but you do want to rotate it horizontally.

And you actual object you want to rotate both.

So, just thinking out load without actually testing it myself, you would need to ...

ROTz !!rotate vertical hotspot horizontally only

code for vertical hotspot

DEL 1

ROTx !!rotate horizontal hotspot vertically only

code for horizontal hotspot

DEL 1

ROTz

ROTx

code for object

DEL 1

I think.

Barry.

Re: Hotspot rotation example that rotates horizontally and vertically

Lingwisyer — Wed, 04 Dec 2024 01:17:02 GMT

Is the movement dependant or independant? And you are wanting to define them by angle given a set distance?

Re: Hotspot rotation example that rotates horizontally and vertically

Domagoj Lukinic — Wed, 04 Dec 2024 07:06:48 GMT

Yes.

I want to define both rotation by variable, moving hotspot is at a fixed distance lets say at A,0 (End of box) and vertical hotspot is at A/2,0 (half length of box) but when I change the angle, moving hotspot needs to be at that location (see code) the problem is when I set vertical rotation my horizontal plane is wrong. I am imputing the wrong coordinates but I do not know anymore how to it 😅

material mat1 rotz verticalRot roty horizontalRot addy -0.5/2 hotspot 0,0,0 hotspot 0,0.5,0 hotspot 0,0,0.25 block 1,0.5,0.25 del top unID=000 !=== HORIZONTAL ROTATION ===! hotspot COS(verticalRot),SIN(verticalRot),0, unID, horizontalRot, 4: unID = unID + 1 !--- BASE hotspot COS(verticalRot)*COS(horizontalRot)*0.5,SIN(verticalRot)*COS(horizontalRot)*0.5,-TAN(horizontalRot)*COS(horizontalRot)*0.5, unID, horizontalRot, 5: unID = unID + 1 !--- MOVEING hotspot 0,0,0, unID, horizontalRot, 6: unID = unID + 1 !--- CENTAR angleForRefence=verticalRot+90 hotspot COS(angleForRefence)*5,SIN(angleForRefence)*5,0, unID, horizontalRot,7: unID = unID + 1 !--- REFERENCE !=== HORIZONTAL ROTATION ===! !=== VERTICAL ROTATION ===! hotspot 5,0,-TAN(horizontalRot)*COS(horizontalRot), unID, verticalRot, 4+128: unID = unID + 1 !--- BASE hotspot COS(verticalRot)*COS(horizontalRot),SIN(verticalRot)*COS(horizontalRot),-TAN(horizontalRot)*COS(horizontalRot), unID, verticalRot, 5: unID = unID + 1 !--- MOVEING hotspot 0,0,-TAN(horizontalRot), unID, verticalRot, 6: unID = unID + 1 !--- CENTAR hotspot 0,0,5, unID, verticalRot, 7: unID = unID + 1 !=== VERTICAL ROTATION ===! !--- REFERENCE

Re: Hotspot rotation example that rotates horizontally and vertically

Barry Kelly — Wed, 04 Dec 2024 08:54:32 GMT

This is better.

The two hotspots need different radii, other wise you will only be able to select one of them.

The inner one is horizontal and the outer one is vertical.

I cheated and rotated the horizontal hotspot script and just substituted the vertical parameter.

material mat1 roty verticalRot rotz horizontalRot hotspot 0,0,0 add -0.5, -0.25, -0.125 block 1,0.5,0.25 del 1 del 1 del 1 unID=000 roty verticalRot !=== HORIZONTAL ROTATION ===! hotspot 0,0,0, unID, horizontalRot, 6: unID = unID + 1 !--- CENTAR hotspot 0.5,0,0, unID, horizontalRot, 4: unID = unID + 1 !--- BASE hotspot COS(horizontalRot)*0.25,SIN(horizontalRot)*0.25,0, unID, horizontalRot, 5: unID = unID + 1 !--- MOVEING hotspot 0,0,1, unID, horizontalRot,7: unID = unID + 1 !--- REFERENCE !=== HORIZONTAL ROTATION ===! del 1 rotz horizontalRot rotx -90 !=== VERTICAL ROTATION ===! hotspot 0,0,0, unID, verticalRot, 6: unID = unID + 1 !--- CENTAR hotspot 0.5,0,0, unID, verticalRot, 4: unID = unID + 1 !--- BASE hotspot COS(verticalRot)*0.30,SIN(verticalRot)*0.30,0, unID, verticalRot, 5: unID = unID + 1 !--- MOVEING hotspot 0,0,1, unID, verticalRot,7: unID = unID + 1 !--- REFERENCE !=== VERTICAL ROTATION ===! del 1 del 1

Barry.

Re: Hotspot rotation example that rotates horizontally and vertically

Lingwisyer — Thu, 05 Dec 2024 09:15:03 GMT

If stacking angle hotspots does not work, you could script intermediate x, y and z parameters that feed back into the angles. One advantage of this is that you can use the x and y coordinates in 2D to control both the pitch and yaw.

Barry, your vertical reference axis needs to shift for the given horizontal rotation else the hotspot vs object rotation axis do not match. Adjusting the base, reference and sometimes centre hotspot in relation to a different transformation is a pain...

Edit:

Transformation in the OPs code is indepentant.

Transformation in Barry's code is dependant.

If the issue here is that the gizmo is not lining up with the rotation when a pitch that isn't zero, this is caused by your centre hotspot not moving. The gizmo rotation is based on the plane formed by the centre, base and moving hotspot with the orientation being defined by the reference, hence with your static centre point, this plane rotates out of line with the actual rotation.

Ling.

Re: Hotspot rotation example that rotates horizontally and vertically

Piotr Dobrowolski — Sat, 07 Dec 2024 17:02:04 GMT

The only working (with some drawbacks) solution would be to have movement hotspot (with constraints) and then calculate the angles from vector from say 0,0,0 to the hotspot. (ofc + some overrides/safety catches for trig functions have to be done...depending on the vector)

Re: Hotspot rotation example that rotates horizontally and vertically

Lingwisyer — Mon, 09 Dec 2024 01:22:11 GMT

The only drawback would be the added complication in the script? It is also by far the most user friendly, as then there is just a single hotspot that they move to point where they want.

Re: Hotspot rotation example that rotates horizontally and vertically

Piotr Dobrowolski — Mon, 09 Dec 2024 11:05:07 GMT

Basically yes, the angle to coords on glob_modpar_name and vice versa, but also for user point of view it might not look straight.

make a lin_ and hook it to the movement hotspots and see how it looks first - as from user point of view