LuxCoreRender Forums

Posted: **Sat Oct 03, 2020 12:19 pm**

Hi so im wanting to this in this order

Add a new material
Set material to an existing object
Remove old material from scene

i did find this code but its not the same in the fact that it changes a current material

# Begin scene editing
		self.session.BeginSceneEdit()

		# Edit the material
		self.scene.Parse(pyluxcore.Properties().
			Set(pyluxcore.Property("scene.materials.shell.type", ["mirror"])).
			Set(pyluxcore.Property("scene.materials.shell.kr", [0.75, 0.75, 0.75])))
		# To remove unreferenced constant textures defined implicitely
		self.scene.RemoveUnusedTextures()
		# To remove all unreferenced image maps (note: the order of call does matter)
		self.scene.RemoveUnusedImageMaps()
		
		# End scene editing
		self.session.EndSceneEdit()

i have been trying to use the command
UpdateObjectMaterial()
but getting error RuntimeError : Unknown object in Scene::UpdateObjectMaterial():
what should i be passing as the object name if i have an object described below

Code: Select all

scene.objects.27342762485360.material = "BlankMat00012419016618936"
scene.objects.27342762485360.ply = scenes/Fracball_LuxCore/Ball.ply
scene.objects.27342762485360.camerainvisible = 0
scene.objects.27342762485360.id = 1795813475
scene.objects.27342762485360.appliedtransformation = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1

thank you for any help in advance

Posted: **Sat Oct 03, 2020 3:40 pm**

MentalArray wrote: Sat Oct 03, 2020 12:19 pm i have been trying to use the command
UpdateObjectMaterial()
but getting error RuntimeError : Unknown object in Scene::UpdateObjectMaterial():
what should i be passing as the object name if i have an object described below
Code: Select all
scene.objects.27342762485360.material = "BlankMat00012419016618936"
scene.objects.27342762485360.ply = scenes/Fracball_LuxCore/Ball.ply
scene.objects.27342762485360.camerainvisible = 0
scene.objects.27342762485360.id = 1795813475
scene.objects.27342762485360.appliedtransformation = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1

"27342762485360" is the object name to pass to Scene::UpdateObjectMaterial() (what were you using ?).

P.S. like the material name is "shell" in your code fragment.

Posted: **Sat Oct 03, 2020 3:53 pm**

hi yes i did use that and i used the mat name and get the error material now

this is running in c# python net 3.7

Code: Select all

 
 session.BeginSceneEdit();
 	//this line adds the material correctly
        sceneProps.SetFromString("scene.materials.whitematte.type = matte" + Environment.NewLine +
        "scene.materials.whitematte.kd = 0.75 0.0 0.0" + Environment.NewLine +
        "scene.materials.whitematte.id = 10101010");
        
        //this line throws the error (Python.Runtime.PythonException: 'RuntimeError : Unknown material in  Scene::UpdateObjectMaterial(): whitematte')
        
          scene.UpdateObjectMaterial("27342762485360", "whitematte");
                                    
session.EndSceneEdit();

Posted: **Sat Oct 03, 2020 4:09 pm**

MentalArray wrote: Sat Oct 03, 2020 3:53 pm hi yes i did use that and i used the mat name and get the error material now

this is running in c# python net 3.7

Code: Select all

 
 session.BeginSceneEdit();
 	//this line adds the material correctly
        sceneProps.SetFromString("scene.materials.whitematte.type = matte" + Environment.NewLine +
        "scene.materials.whitematte.kd = 0.75 0.0 0.0" + Environment.NewLine +
        "scene.materials.whitematte.id = 10101010");
        
        //this line throws the error (Python.Runtime.PythonException: 'RuntimeError : Unknown material in  Scene::UpdateObjectMaterial(): whitematte')
        
          scene.UpdateObjectMaterial("27342762485360", "whitematte");
                                    
session.EndSceneEdit();

Did you forget to post some line of code code ? You are not parsing the sceneProps. It should be something like:

Code: Select all

 
session.BeginSceneEdit();
        sceneProps.SetFromString("scene.materials.whitematte.type = matte" + Environment.NewLine +
        "scene.materials.whitematte.kd = 0.75 0.0 0.0" + Environment.NewLine +
        "scene.materials.whitematte.id = 10101010" + Environment.NewLine);
        
        // MISSING THIS:
	scene.Parse(sceneProps)	
        
         scene.UpdateObjectMaterial("27342762485360", "whitematte"); 
session.EndSceneEdit();

You are also missing a "+ Environment.NewLine" from the last "scene.materials.whitematte.id" property (but as far as I remember this shouldn't be a problem anymore).

Posted: **Sat Oct 03, 2020 4:18 pm**

yes i have tried that latest code

Code: Select all

session.BeginSceneEdit();
                                    sceneProps.SetFromString("scene.materials.whitematte.type = matte" + Environment.NewLine +
                                    "scene.materials.whitematte.kd = 0.75 0.0 0.0" + Environment.NewLine +
                                    "scene.materials.whitematte.id = 10101010" + Environment.NewLine);
                                   
                                    scene.Parse(sceneProps);
                                    scene.UpdateObjectMaterial("27342762485360", "whitematte");
                                    session.EndSceneEdit();

umm still get error

Python.Runtime.PythonException: 'RuntimeError : Unknown material in Scene::UpdateObjectMaterial(): whitematte'

Posted: **Sun Oct 04, 2020 12:47 am**

ok got it working finally

just needed to add

Code: Select all

scene.Parse(pyluxcore.Properties(sceneProps));

and it worked....

LuxCoreRender Forums

Python Set object Material Help

Python Set object Material Help

Re: Python Set object Material Help

Re: Python Set object Material Help

Re: Python Set object Material Help

Re: Python Set object Material Help

Re: Python Set object Material Help