[Blender x Python] Let's master rotation !!

table of contents

0. Let's rotate the cube
1. Let's rotate the torus
2. Sample code
3. Summary of English words

0. Let's rotate the cube

0-0.1 Let's rotate one cube

◯ This is the simplest rotation method.

import bpy
#Contains various things necessary for calculation
import math

#Function to add a cube
bpy.ops.mesh.primitive_cube_add(
    scale=(1, 1, 1),
    #Add argument
    #math.pi is 180 degrees, so math.pi * 1/6 = 30(Every time)
    #Rotate 30 degrees around the X axis
    rotation = (math.pi*1/6,0,0)
    )

0-1. Rotate the cubes and line them up

◯ We will shift them little by little.

import bpy
import math

#Iterate 100 times
for i in range(0,100):
    bpy.ops.mesh.primitive_cube_add(
        #Move up little by little
        location=(0, 0, i/50),
        scale=(1, 1, 0.05),
        #180 * i * 36(Every time)Shift one by one
        rotation = (0, 0, math.pi*i*10/360)
        )

0-2. Let's add color

◯ It is an application of the above code.

import bpy
import math

#Create a variable called material yourself(material means material)
material = bpy.data.materials.new('Red')
#Define color(R,G,B,A)
material.diffuse_color = (1.0, 0.0, 0.0, 1.0)

 #Repeat 100 times
for i in range(0,100):
    bpy.ops.mesh.primitive_cube_add(
        #Move up little by little
        location=(0, 0, i/50),
        scale=(1, 1, 0.05),
        #Rotate little by little
        rotation = (0, 0, math.pi*i*10/360)
        )
    #Add your own defined color to the object(append means append)
    bpy.context.object.data.materials.append(material)

1. Let's rotate the torus

1-0. Let's transform the torus

import bpy

#Function to add a torus
bpy.ops.mesh.primitive_torus_add(
    location=(0, 0, 0),
    major_radius=1.0,
    minor_radius=0.01,
    rotation=(0, 0, 0)
    )
#Shrink in the Y-axis direction
bpy.ops.transform.resize(value=(1, 0.3, 1))

1-0. Rotate the torus and line it up

◯ It is a method to rotate after making a shape.

import bpy
import math

for i in range(0,36):
    bpy.ops.mesh.primitive_torus_add(
        location=(0, 0, 0),
        major_radius=1.0,
        minor_radius=0.01,
        )
    #Shrink in the Y-axis direction
    bpy.ops.transform.resize(value=(1, 0.3, 1))
    #Rotate around the Z axis
    bpy.ops.transform.rotate(value=math.pi*i*10/360,orient_axis='Z')

1-2. Let's color the torus

◯ After rotating around one axis, it is rotated around another axis.

import bpy
import math

#Material definition
material = bpy.data.materials.new('Red')
material.diffuse_color = (1.0, 0.0, 0.0, 1.0)

for i in range(0,36):
    for j in range(0,36):
        bpy.ops.mesh.primitive_torus_add(
            location=(0, 0, 0),
            major_radius=1.0,
            minor_radius=0.01,
            )
        #Shrink in the Y-axis direction
        bpy.ops.transform.resize(value=(1, 0.3, 1))
        #Rotate around the Z axis
        bpy.ops.transform.rotate(value=math.pi*j*10/360,orient_axis='Z')
        #Rotate around the Y axis
        bpy.ops.transform.rotate(value=math.pi*i*10/360,orient_axis='Y')
        #Use your own defined red
        bpy.context.object.data.materials.append(material)

2. Sample code

Code to rotate the cube

import bpy
#Contains various things necessary for calculation
import math

#Function to add a cube
bpy.ops.mesh.primitive_cube_add(
    scale=(1, 1, 1),
    #Add argument
    #math.pi is 180 degrees, so math.pi * 1/6 = 30(Every time)
    #Rotate 30 degrees around the X axis
    rotation = (math.pi*1/6,0,0)
    )

A code that rotates and arranges cubes

import bpy
import math

#Iterate 100 times
for i in range(0,100):
    bpy.ops.mesh.primitive_cube_add(
        #Move up little by little
        location=(0, 0, i/50),
        scale=(1, 1, 0.05),
        #180 * i * 36(Every time)Shift one by one
        rotation = (0, 0, math.pi*i*10/360)
        )

Code to color the arranged cubes

import bpy
import math

#Create a variable called material yourself(material means material)
material = bpy.data.materials.new('Red')
#Define color(R,G,B,A)
material.diffuse_color = (1.0, 0.0, 0.0, 1.0)

 #Repeat 100 times
for i in range(0,100):
    bpy.ops.mesh.primitive_cube_add(
        #Move up little by little
        location=(0, 0, i/50),
        scale=(1, 1, 0.05),
        #Rotate little by little
        rotation = (0, 0, math.pi*i*10/360)
        )
    #Add your own defined color to the object(append means append)
    bpy.context.object.data.materials.append(material)

Code that transforms the torus

import bpy

#Function to add a torus
bpy.ops.mesh.primitive_torus_add(
    location=(0, 0, 0),
    major_radius=1.0,
    minor_radius=0.01,
    rotation=(0, 0, 0)
    )
#Shrink in the Y-axis direction
bpy.ops.transform.resize(value=(1, 0.3, 1))

A code that rotates and arranges the torus

import bpy
import math

for i in range(0,36):
    bpy.ops.mesh.primitive_torus_add(
        location=(0, 0, 0),
        major_radius=1.0,
        minor_radius=0.01,
        )
    #Shrink in the Y-axis direction
    bpy.ops.transform.resize(value=(1, 0.3, 1))
    #Rotate around the Z axis
    bpy.ops.transform.rotate(value=math.pi*i*10/360,orient_axis='Z')

A code that colors the torus and rotates it around two axes

import bpy
import math

#Material definition
material = bpy.data.materials.new('Red')
material.diffuse_color = (1.0, 0.0, 0.0, 1.0)

for i in range(0,36):
    for j in range(0,36):
        bpy.ops.mesh.primitive_torus_add(
            location=(0, 0, 0),
            major_radius=1.0,
            minor_radius=0.01,
            )
        #Shrink in the Y-axis direction
        bpy.ops.transform.resize(value=(1, 0.3, 1))
        #Rotate around the Z axis
        bpy.ops.transform.rotate(value=math.pi*j*10/360,orient_axis='Z')
        #Rotate around the Y axis
        bpy.ops.transform.rotate(value=math.pi*i*10/360,orient_axis='Y')
        #Use your own defined red
        bpy.context.object.data.materials.append(material)

3. Summary of English words