A simple 'revisiting' of the basics of custom Blender operators for making meshes.

ShapeMaker.py

"""
ShapeMaker.py

A just for fun blender operator that sticks a mesh into the current scene.
Mainly just a 'revisiting' exercise in operators that make specialized mesh objects.
"""
import bpy
import bmesh
from bpy.props import FloatProperty

class ShapeMaker(bpy.types.Operator):
    bl_idname = "object.shapemaker"
    bl_label = "Shape Maker"
    bl_options = {"REGISTER", "UNDO"}
    
    x_loc = FloatProperty(name="x loc", min=-5, max=5, default=0)
    
    def execute(self, cxt):
        vert_data = [[-5, 0, 0], 
                     [5, 0, 0],
                     [self.x_loc, 5, 0]]
        
        bm = bmesh.new()
        for vert in vert_data:
            bm.verts.new(vert)
        
        bm.verts.ensure_lookup_table()
        face_idxs = [[0, 1, 2]]
        for face_idx in face_idxs:
            bm.faces.new([bm.verts[i] for i in face_idx])    

        mesh = bpy.data.meshes.new("mymesh")
        bm.to_mesh(mesh)
        ob = bpy.data.objects.new("myob", object_data=mesh)
        cxt.scene.objects.link(ob)        
        return {"FINISHED"}


if __name__ == '__main__':
    bpy.utils.register_class(ShapeMaker)