Painting Setting

.Net Add-on Programming
1

I want to trigger the painting setting through the code in the following code, but it fails to execute properly and shows an error. Where did I make a mistake? Thank you.

        private void PrpareForPainting_click(object sender, RoutedEventArgs e)
        {

            ICommandRegistry cmd = IoC.Get<ICommandRegistry>();
            IActionItem extractCmd = cmd.FindItem("PrpareForPainting");
            extractCmd.Execute();
        }

Error : System.NullReferenceException:“Object reference not set to an instance of an object.”

2

That command takes a bool parameter, and only opens or closes the UI for it. I think there is no API to prepare components for painting programmatically.

3

So there is no way to set the Prepare Selected Components method?
Thank you

image
image413×845 13.3 KB

4

What the “Prepare for painting” does is collect all triangle meshes (ITriangleSet) from all node’s geometry (ISimNode.Geometry) of the selected component and then call

ITriangleSet.SubdivideMesh(MaxEdgeLength, int.MaxValue);
ITriangleSet.ResetTextureCoordinateValues();

Then it sets (or creates) a boolean property in the component called “PaintPrepared” to true.

So, even though you can not use the command directly, you can do the same using the .NET API.

5

I’m not sure how to use it. Can you give me some examples?
Thanks

6

Something like this (did not test it):

private void PrpareForPainting_click(object sender, RoutedEventArgs e)
{
    var c = IoC.Get<ISelectionManager>().GetSelected<ISimComponent>();
    double maxEdgeLength = 50;
    SubvideMesh(c.RootNode);

	var componentPreparedProp = c.Properties.FirstOrDefault(p => p.Name == PaintProperties.PAINT_PREPARED);
	if (componentPreparedProp == null)
	{
		componentPreparedProp = c.CreateProperty(typeof(bool), PropertyConstraintType.NotSpecified);
		componentPreparedProp.Name = PaintProperties.PAINT_PREPARED;
		componentPreparedProp.IsVisible = false;
	}
	componentPreparedProp.Value = true;

	IoC.Get<IPaintColorMapsEditorViewModel>().AddMaterialToComponent(c, true, true);

}

private void SubvideMesh(ISimNode node, double maxEdgeLength)
{
    var sets = node.Geometry.GeometrySets.OfType<ITriangleSet>();
    foreach (var triangleset in sets)
    {
        NotificationBar();
        triangleset.SubdivideMesh(maxEdgeLength, int.MaxValue);
        triangleset.ResetTextureCoordinateValues();
    }

    var children = node.Children;
    foreach (var n in children)
    {
        SubvideMesh(n, maxEdgeLength);
    }
}
1 Like
7

Thank you, I have tested it and it works

1 Like
8

PaintProperties.PAINT_PREPARED This is an error

9

Uploading: net.png…

10

You can use the value directly which is a string “PaintPrepared”.

11

Thank you. I tried, but still got an error. Please take a screenshot or attach a program

12

Thank you very much，Thank you very much

13

What error do you get? you should simply change the code with something like this

I cannot see the screenshot, can you publish it again if you still get an error?

1 Like
14

Thank you very much for your answer

15

Paint python
Paint python2320×1278 507 KB

16

net
net2130×1332 279 KB

17

In your .NET code you should change PaintProperties.PAIN_PREPARED to “PaintPrepared”.
Remove the code you have about getting and executing “PrpareForPaiting”, there is no need.

In your Python script, you should check if the component has the PaintPrepared property.

component = getComponent()
PaintPreparedProperty = component.getProperty("PaintPrepared")

Then check if PaintPreparedProperty is not None, otherwise it means it was not set.

1 Like
18

Many thanks，Many thanks

19

This component is being sprayed, can it be changed to another color

20

A

Can this be done in a Python script

B
B865×822 209 KB

How does this get back to its old color
I want to use python program to achieve this, I have studied for a long time, I will pay you, can you help me to achieve it? Thank you very much