Cookbook

Unsorted

# Get Active Object
obj = doc.GetActiveObject

Matrix Array Transformation

Theory

Position

Selecting a single element

n = 20

# Position: Vector to Real
x = marr[n].off.x 
y = 20
z = marr[n].off.z

marr[n].off = c4d.Vector(x,y,z)

Selecting a single element

for i in range(cnt):
  x = marr[i].off.x 
  y = 20+i*5
  z = marr[i].off.z
  
marr[i].off = c4d.Vector(x,y,z)

Rotation

Single Axis

rot_x = c4d.utils.MatrixRotX(c4d.utils.Rad(45))
rot_y = c4d.utils.MatrixRotY(c4d.utils.Rad(30))
rot_z = c4d.utils.MatrixRotZ(c4d.utils.Rad(45))

marr[6] *= rot_x
   

Multiple Axes with HPB to Matrix

r_x = c4d.utils.Rad(11)
r_y = 0
r_z = c4d.utils.Rad(18)

vect = c4d.Vector(r_x, r_y, r_z)
rotation = c4d.utils.HPBToMatrix(vect,5)

marr[6] *= rotation

Scale

for i in range(cnt):
    x = random.uniform(0.2,1) 
    y = random.uniform(0.2,1)
    z = random.uniform(0.2,1)
    vect = c4d.Vector(x,y,z)
  #  marr[i].Scale(float(i/10))
    marr[i].Scale(vect)

Color

carr = moData.GetArray(c4d.MODATA_COLOR) # Color Array

# Gray Scale
# carr[0] = c4d.Vector(0.5) 

for i in range(cnt):
    r = random.random()
    g = random.random() 
    b = random.random()
    carr[i] = c4d.Vector(r,g,b)
    
# Update Color Array
moData.SetArray(c4d.MODATA_COLOR, carr, hasField)

References

• C4D SDK Documentation

• Cinema 4D Python Bytes
• Cinema4D Python SDK

C4D Python SDK Extended Github, Plugin Cafehttps://github.com/aturtur/cinema4d-scripts

Formula

Documentation

Alternate intensity based on row number (Animate over time)

mod((id/5);2)?(t;-t)

Animate over time based on the row number sequence

(id/5)/(count/5)*1.5*t