Arrows

The Panopti Arrows object represents a collection of floating arrows defined by an array of starting points and ending points. To add arrows to your scene:

import panopti
import numpy as np

viewer = panopti.connect(server_url="http://localhost:8080", viewer_id='client')

start_points = np.random.randn(64, 3)
end_points = start_points.clone()
end_points[:, 0] += 3.0

viewer.add_arrows(
    starts=start_points,
    ends=end_points,
    name='MyArrows',
    color=(0.5, 0.5, 0.5),
    width=0.02
)

BaseViewer.add_arrows

add_arrows

Adds an Arrows object to the viewer.

Parameters:

Name	Type	Description	Default
starts	ndarray	(N, 3) array of start points for the arrows.	required
ends	ndarray	(N, 3) array of end points for the arrows.	required
name	str	Name for the arrows object.	required
color	Union[Tuple[float, float, float], ndarray]	(N, 3) or (3,) array of RGB colors for the arrows.	(0, 0, 0)
width	float	Width of the arrows.	0.01
visible	bool	Whether the arrows are visible.	True
opacity	float	Opacity of the arrows.	1.0

Returns:

Name	Type	Description
Arrows	Arrows	The created panopti arrows object.

Arrows.update(**kwargs)

update

Updates this arrow's attributes and propagate updates to the viewer.

Example:

arrows = viewer.get('MyArrows')
arrows.update(width=0.03, color=new_color)

Arrows.delete()

delete

Deletes this arrow from the viewer.

Arrows.trans_mat property

trans_mat

Returns the 4x4 transformation matrix corresponding to the object's position, rotation, and scale in the viewer.

Arrows.viewer_starts property

viewer_starts

Returns the Arrow's starts attribute under the transformation given by trans_mat.

Arrows.viewer_ends property

viewer_ends

Returns the Arrow's ends attribute under the transformation given by trans_mat.