PackedInt32Array() how to append to it?

[iOSxcOder]

Godot Version

4.6

Question

I’m trying to add ints from loop into this indices variable but not sure how could I do it

for now I used print and manually copy/paste

	for i in numbers_of_steps:
		current_step_iteration += 1
		my_vertices.push_back(Vector3(start_vector.rotated(Vector3.DOWN, rotation_degree_value/float(current_step_iteration))))
		my_uvs.push_back(Vector2(0,0))
		my_normals.push_back(Vector3.UP)
		var a = 0
		var b = 1
		var c = 2
		var d = 3
		print(str(a + current_indices_iteration) +",", str(c + current_indices_iteration) + ",",str(b + current_indices_iteration )+ ",")
		print(str(a + current_indices_iteration) +",", str( d + current_indices_iteration) + ",",str( b + current_indices_iteration) + ",")
		current_indices_iteration += 1

variable I trying to assign those values is : var my_indices = PackedInt32Array()

some advice how to format it , I saw append , but should it be as first or second option .
If second then how can I format it to have “,” between int’s ?

[normalized]

Just array.append(value)

[iOSxcOder]

	for i in numbers_of_steps:
		current_step_iteration += 1
		my_vertices.push_back(Vector3(start_vector.rotated(Vector3.UP, rotation_degree_value/float(current_step_iteration))))
		my_uvs.push_back(Vector2(0,0))
		my_normals.push_back(Vector3.UP)
		var a = 0
		var b = 1
		var c = 2
		var d = 3
		my_indices.append(a +current_indices_iteration)
		my_indices.append(c +current_indices_iteration)
		my_indices.append(b +current_indices_iteration)
		my_indices.append(a +current_indices_iteration)
		my_indices.append(d +current_indices_iteration)
		my_indices.append(b +current_indices_iteration)
		current_indices_iteration += 1

looks a bit ugly is a way to reformat it ?

[normalized]

You don’t need any indices for drawing a circle. Just don’t use index array.

[iOSxcOder]

thanks .

Just wonder why one side have more points then other .

extends MeshInstance3D

func _ready() -> void:
	var surface_array = []
	surface_array.resize(Mesh.ARRAY_MAX)
	
	var uvs = PackedVector2Array()
	var indices = PackedInt32Array()
	
	# circle vars
	var start_vector = Vector3(1.0, 0 ,0)
	var rotation_degree_value = 360
	var current_step_iteration = 0
	var current_indices_iteration = 0
	var numbers_of_steps = 360
	var my_vertices = PackedVector3Array()
	var my_uvs = PackedVector2Array()
	var my_normals = PackedVector3Array()
	#var my_indices = PackedInt32Array()
	
	# loop 
	for i in numbers_of_steps:
		current_step_iteration += 1
		my_vertices.push_back(Vector3(start_vector.rotated(Vector3.UP, rotation_degree_value/float(current_step_iteration))))
		my_uvs.push_back(Vector2(0,0))
		my_normals.push_back(Vector3.UP)
		#var a = 0
		#var b = 1
		#var c = 2
		#var d = 3
		#my_indices.append(a +current_indices_iteration)
		#my_indices.append(c +current_indices_iteration)
		#my_indices.append(b +current_indices_iteration)
		#my_indices.append(a +current_indices_iteration)
		#my_indices.append(d +current_indices_iteration)
		#my_indices.append(b +current_indices_iteration)
		#current_indices_iteration += 1
		
	
# uv is something to figure out 
	#uvs = PackedVector2Array([
		#Vector2(0, 0),
		#Vector2(1, 0),
		#Vector2(0, 1),
		#Vector2(1, 1),
	#])
	
	surface_array[Mesh.ARRAY_VERTEX] = my_vertices
	surface_array[Mesh.ARRAY_TEX_UV] = my_uvs
	surface_array[Mesh.ARRAY_NORMAL] = my_normals
	#surface_array[Mesh.ARRAY_INDEX] = my_indices
	  
	mesh.add_surface_from_arrays(Mesh.PRIMITIVE_POINTS, surface_array)

[normalized]

Start with small number of steps, say 32.

Rotate the same vector for the same step angle each iteration.