draw and properties visibility !

Coding Python Support
1

I made a class for and add mesh menu

and added a checkbox conditions like this

if checkweight: # Z Linear ht

ht=phi
print (‘check True ht=’,ht )
strc=str(‘ht = phi’.format(ht))
layout.label(str(strc))

else:

ht= self.properties.ht

strc=str(‘ht’.format(ht))
layout.label(str(strc))
print (‘check False ht=’,ht)

so if checkbox is false it should add the property
but if I set the checkbox the property remain visible

like panel is not update
is this normal or another way to add or remove a property from the panel?

how do you passes var between the draw part and the execute part ?
global vars ?

thanks

2

Just don’t display the label or property in the else case.

3

in one case I use a fix value = phi
but in the other case I need a var = property

are you saying it is not possible to do that with panel update !

trying to work with class var now
and almost doing it but not updating as it should!

how do u passes var between functions in panel?
need to use class vars !

thanks

4

how do u passes var between functions in panel?

I just store my vars in the object as custom property. Then when I need them I already know I am self and can fetch them.

Here is what I typically put at the top of my draw.

def draw(self, context):
    if context != None:
        ob = context.object
        if ob != None:

myvar = ob.[“myvar”]

Assuming this is an object based panel, of course. This technique can work with any datablock that supports custom properties though. Like materials etc…

5

got to review these class and local vars!
don’t use that often

I know you can add prop or not in a panel
but for this operator not certain if it is possible!

I can make small file for the prop
let me know if that can help

thanks

6

You can pass the calling name along to the operator. Then the operator can be coded to fetch the variable from the calling object’s properties.

7

can you run this



###
	
class Goldenspiralzphi1(bpy.types.Operator):
	
	'''Add Golden spiral zphi1'''
	
	bl_idname = "mesh.primitive_goldenspiralzphi_add"
	bl_label = "Add Golden Spiral"
	bl_options = {'REGISTER', 'UNDO','BLOCKING'}
	
	seg1 = IntProperty(name="Segments", description="Number  segments",default=32, min=4, max=100)
	nturn = FloatProperty(name="nturn", description="nturn",default=1, min=1, max=100.0)
	ht= FloatProperty(name="Height/turn",description="Height/turn", default=1.2, min=0.0, max=100.0)
	a1 = FloatProperty(name="a1",description="a1",default=0.05, min=0.001, max=100.0)
	curveadd=BoolProperty(name='add curve bevel',default=False,description='add curve bevel')
	
	checkweight = bpy.props.BoolProperty(name='Use Z=F(PHI)',default=False,description='Use Z=F(PHI)')
	
	var1=1.6180339
	
	def draw(self, context):						# Function to draw the menu in tool pro panel
	
		seg1 = self.properties.seg1
		checkweight= self.properties.checkweight
		a1 = self.properties.a1
		nturn = self.properties.nturn
	
		curveadd= self.properties.curveadd
	
		layout = self.layout
	
		if checkweight:				# Z = F( PHI )
	
	
			ht= self.properties.ht
			Goldenspiralzphi1.var1=ht
	
			print ('check  True  ht=',ht )
			strc=str('ht = phi'.format(ht))
			layout.label(str(strc))
	
		else:						# Z Linear  ht
	
			ht=phi
			Goldenspiralzphi1.var1=phi
			
			strc=str('ht'.format(ht))
			layout.label(str(strc))
			print ('check  False  ht=',ht)
	
		print ( 'class var =',Goldenspiralzphi1.var1)
	
#		layout.prop(self, "checkweight", text = "Z =F(PHI)")
		layout.prop(self, "checkweight", text = strc)
	
		layout.prop(self, "seg1", text = "seg1")
		layout.prop(self, "a1", text = "a1")
		layout.prop(self, "nturn", text = "nturn")
		layout.prop(self, "ht", text = "ht")
		layout.prop(self, "curveadd", text = "curveadd")
	
	
	
	def execute(self, context):
	
		global  layers
		verts,edges,faces,vid= [],[],[],0
		bm = bmesh.new()									# Create new Bmesh mesh
		named1="Golden Spiralzphi1"
	
	
		seg1 = self.properties.seg1
		checkweight= self.properties.checkweight
		a1 = self.properties.a1
		nturn = self.properties.nturn
		ht= self.properties.ht
	
		curveadd= self.properties.curveadd
	
		ht1=Goldenspiralzphi1.var1
		print ('ht1=',ht1)
	
	#   R =  G^(2 Theta / pi )	
	#   R = a1  exp(b1 * phi)	 b1 = a bs(log(phi)/90)
	#   R = a1* exp(b1 * n) 
	
		phi=(1.0+5.0**0.5)/2.0				# golden ratio ~ 1.618
		b1=abs(log(phi)/90.0)
		b2=log(2)
	
		minag,maxag=0,nturn*360
	
		step1=(maxag-minag)/(seg1*nturn)
	
		for n1 in float2_range(minag, maxag, 1):
	
			ANGTR=n1*pi/180
			ro= a1* exp(b1* n1)
			XC=ro*cos(ANGTR)
			YC=ro*sin(ANGTR)
			ZC=ANGTR*ht1/(2*pi)
	
			verts.append(bm.verts.new((XC,YC,ZC)))			# Add vertices
	
			if vid > 0:										# Add edges
				edges.append(bm.edges.new((bm.verts[vid-1], bm.verts[vid])))
			vid+= 1
	
		adddata1(bm,named1,verts,curveadd)

	
		return {'FINISHED'}
	
###

it works if you click on checkbox a few times
but not the first time

thanks

8

There are too many bugs in that script, it does not even run once. Try pasting that code into a script window and you will see what I mean.