topic [SOLVED] Rotate placement in Archicad C++ API

[SOLVED] Rotate placement

Anonymous — Tue, 01 Aug 2023 11:33:46 GMT

This will be hard to explain, hope it makes sense.

When i place object it has defined x, y, z position. So when i need to place in different angle. For example if i rotate 90° i need y= to be x and x= to be y. It get's even more complicated when i need to rotate 45°.
So object get's placed in right position when placed in different angle.
Is there any useful functions to assist this?

Re: Rotate placement

Tibor Lorantfy — Wed, 18 Mar 2015 09:30:35 GMT

Hi,

yes, Geometry module helps with this kind of calculations.
You can use TMRotatePoint for example to rotate a point with an angle:

#include "Point3DData.h" // you need Geometry modul 
 
void RotatePoint (const Vector3D& origo, const Vector3D& axis, double angleDEG, double* x, double* y, double* z) 
{ 
	Geometry::TMRotatePoint (origo.x, origo.y, origo.z, 
								axis.x, axis.y, axis.z, 
								angleDEG * DEGRAD, 
								x, y, z); 
} 
 
// Usage: 
RotatePoint (Vector3D (0.0, 0.0, 0.0), Vector3D (0.0, 0.0, 1.0), 45.0, &x, &y, &z);

This example rotates the coordinates around the Z axis with 45 degrees.

Regards,
Tibor

Re: Rotate placement

Anonymous — Wed, 18 Mar 2015 13:31:19 GMT

Thanks Tibor.

Couldn't find solution calculated each >0>90>180>360 section coordinates, , long code...

And this takes just few rows Thanks.

Will change to this now.