Truncated Cube with Textures #790

vsquared · 2026-08-22T15:19:09Z

vsquared
Aug 22, 2026

This is a py5 port of code initially posted in the Processing forum: https://discourse.processing.org/t/truncated-cube-p3d/49216 .
It demonstrates applying textures to the octagonal faces of a truncated cube with the aid of texture_mode(NORMAL). The images used for the textures are shown below and should be copy/pasted into the sketch folder. The cube is rotated by mouse movement.

# Uses Imported mode for py5
# Images need to be in sketch folder
#  LT = left top : RT = right top : RB = right bottom : LB = left bottom

def cube(s):
  crop = s/3
  texture_mode(NORMAL)
# Front face
  begin_shape()
  texture(imgOne)
  vertex(-s, -s+crop, s, 0.0, 0.16)  # LT lower crop * -> Front LT Triangle
  vertex(-s+crop, -s, s, 0.16, 0.0)  # LT upper crop * -> Front LT Triangle
  vertex( s-crop, -s, s, 0.84, 0.0)  # RT upper crop * -> Front RT Triangle
  vertex( s, -s+crop, s, 1.0, 0.16)  # RT lower crop * -> Front RT Triangle 
  vertex( s, s-crop,  s, 1.0, 0.84)  # RB upper crop * -> Front RB Triangle 
  vertex( s-crop,  s, s, 0.84, 1.0)  # RB lower crop * -> Front RB Triangle 
  vertex(-s+crop,  s, s, 0.16, 1.0)  # LB lower crop * -> Front LB Triangle 
  vertex(-s, s-crop,  s, 0.0, 0.84)  # LB upper crop * -> Front LB Triangle 
  end_shape()
  
# Back face
  begin_shape()
  texture(imgSix)
  vertex( s, -s+crop, -s, 0.0, 0.16)  # LT lower crop * -> Back LT Triangle 
  vertex( s-crop, -s, -s, 0.16, 0.0)  # LT upper crop * -> Back LT Triangle 
  vertex(-s+crop, -s, -s, 0.84, 0.0)  # RT upper crop * -> Back RT Triangle 
  vertex(-s, -s+crop, -s, 1.0, 0.16)  # RT lower crop * -> Back RT Triangle 
  vertex(-s,  s-crop, -s, 1.0, 0.84)  # RB upper crop * -> Back RB Triangle 
  vertex(-s+crop,  s, -s, 0.84, 1.0)  # RB lower crop * -> Back RB Triangle 
  vertex( s-crop,  s, -s, 0.16, 1.0)  # LB lower crop * -> Back LB Triangle 
  vertex( s,  s-crop, -s, 0.0, 0.84)  # LB upper crop * -> Back LB Triangle 
  end_shape()
  
# Bottom face
  begin_shape()
  texture(imgFour)
  vertex(-s,  s,  s-crop, 0.0, 0.16)  # LT lower crop 
  vertex(-s+crop,  s,  s, 0.16, 0.0)  # LT upper crop 
  vertex( s-crop,  s,  s, 0.84, 0.0)  # RT upper crop 
  vertex( s,  s,  s-crop, 1.0, 0.16)  # RT lower crop 
  vertex( s,  s, -s+crop, 1.0, 0.84)  # RB upper crop 
  vertex( s-crop,  s, -s, 0.84, 1.0)  # RB lower crop 
  vertex(-s+crop,  s, -s, 0.16, 1.0)  # LB lower crop 
  vertex(-s,  s, -s+crop, 0.0, 0.84)  # LB upper crop 
  end_shape()
  
# Top face
  begin_shape()
  texture(imgThree)
  vertex(-s, -s, -s+crop, 0.0, 0.16)  # LT lower crop 
  vertex(-s+crop, -s, -s, 0.16, 0.0)  # LT upper crop 
  vertex( s-crop, -s, -s, 0.84, 0.0)  # RT upper crop 
  vertex( s, -s, -s+crop, 1.0, 0.16)  # RT lower crop 
  vertex( s, -s,  s-crop, 1.0, 0.84)  # RB upper crop 
  vertex( s-crop, -s,  s, 0.84, 1.0)  # RB lower crop 
  vertex(-s+crop, -s,  s, 0.16, 1.0)  # LB lower crop 
  vertex(-s, -s,  s-crop, 0.0, 0.84)  # LB upper crop 
  end_shape()
  
# Right face
  begin_shape()
  texture(imgTwo)
  vertex( s, -s+crop,  s, 0.0, 0.16)  # LT lower crop 
  vertex( s, -s,  s-crop, 0.16, 0.0)  # LT upper crop * -> Front RT Triangle 
  vertex( s, -s, -s+crop, 0.84, 0.0)  # RT upper crop * -> Back LT Triangle 
  vertex( s, -s+crop, -s, 1.0, 0.16)  # RT lower crop 
  vertex( s,  s-crop, -s, 1.0, 0.84)  # RB upper crop 
  vertex( s,  s, -s+crop, 0.84, 1.0)  # RB lower crop * -> Back LB Triangle 
  vertex( s,  s,  s-crop, 0.16, 1.0)  # LB lower crop * -> Front RB Triangle 
  vertex( s,  s-crop,  s, 0.0, 0.84)  # LB upper crop 
  end_shape()
  
# Left face
  begin_shape()
  texture(imgFive)
  vertex(-s, -s+crop, -s, 0.0, 0.16)  # LT lower crop 
  vertex(-s, -s, -s+crop, 0.16, 0.0)  # LT upper crop * -> Back RT Triangle 
  vertex(-s, -s,  s-crop, 0.84, 0.0)  # RT upper crop * -> Front LT Triangle 
  vertex(-s, -s+crop,  s, 1.0, 0.16)  # RT lower crop 
  vertex(-s,  s-crop,  s, 1.0, 0.84)  # RB upper crop   
  vertex(-s,  s,  s-crop, 0.84, 1.0)  # RB lower crop * -> Front LB Triangle 
  vertex(-s,  s, -s+crop, 0.16, 1.0)  # LB lower crop * -> Back RB Triangle 
  vertex(-s,  s-crop, -s, 0.0, 0.84)  # LB upper crop 
  end_shape()

# ===== Triangles =======

# Front face LT triangle
  begin_shape()
  fill(0) 
  vertex(-s, -s+crop, s)  # Front LT lower crop * -> LT Triangle 
  vertex(-s+crop, -s, s)  # Front LT upper crop * -> LT Triangle 
  vertex(-s, -s,  s-crop) # Left RT upper crop * -> LT Triangle 
  end_shape()
  
# Front face RT triangle
  begin_shape()
  fill(0) 
  vertex( s-crop, -s, s)  # Front RT upper crop * -> RT Triangle 
  vertex( s, -s+crop, s)  # Front RT lower crop * -> RT Triangle 
  vertex( s, -s,  s-crop) # Right LT upper crop * -> RT Triangle 
  end_shape()

# Front face RB triangle
  begin_shape()
  fill(0)  
  vertex( s, s-crop, s)   # Front RB upper crop * -> RB Triangle 
  vertex( s-crop, s, s)   # Front RB lower crop * -> RB Triangle 
  vertex( s, s, s-crop)   # Right LB lower crop * -> RB Triangle  
  end_shape()
  
# Front face LB triangle
  begin_shape()    
  fill(0) 
  vertex(-s+crop,  s, s)  # Front LB lower crop * -> LB Triangle 
  vertex(-s, s-crop, s)   # Front LB upper crop * -> LB Triangle 
  vertex(-s, s, s-crop)   # Left RB lower crop * -> LB Triangle 
  end_shape()  

# Back face LT triangle
  begin_shape()
  fill(0)
  vertex( s, -s+crop, -s)  # Back LT lower crop * -> LT Triangle 
  vertex( s-crop, -s, -s)  # Back LT upper crop * -> LT Triangle 
  vertex( s, -s, -s+crop)  # Left RT upper crop * -> LT Triangle 
  end_shape()

# Back face RT triangle
  begin_shape()
  fill(0)
  vertex(-s+crop, -s, -s)  # Back RT upper crop * -> RT Triangle 
  vertex(-s, -s+crop, -s)  # Back RT lower crop * -> RT Triangle 
  vertex(-s, -s, -s+crop)  # Right LT upper crop * -> RT Triangle 
  end_shape()

# Back face RB triangle
  begin_shape() 
  fill(0)
  vertex(-s, s-crop, -s)  # Back RB upper crop * -> RB Triangle 
  vertex(-s+crop, s, -s)  # Back RB lower crop * -> RB Triangle 
  vertex(-s, s, -s+crop)  # Left LB lower crop * -> RB Triangle   
  end_shape()

# Back face LB triangle
  begin_shape() 
  fill(0)  
  vertex( s-crop, s, -s)  # Back LB lower crop * -> LB Triangle 
  vertex( s, s-crop, -s)  # Back LB upper crop * -> LB Triangle 
  vertex( s, s, -s+crop)  # Right RB lower crop * -> LB Triangle 
  end_shape()

def setup():
  global imgOne
  global imgTwo
  global imgThree
  global imgFour
  global imgFive
  global imgSix
  
  size(600, 600, P3D)
  window_title("Truncated Cube with Textures")
  stroke_weight(4.0)
  imgOne = load_image("one.png")
  imgTwo = load_image("two.png")
  imgThree = load_image("three.png")
  imgFour = load_image("four.png")
  imgFive = load_image("five.png")
  imgSix = load_image("six.png")
  
def draw():
  background(0)
  translate(width/2, height/2)
  rotate_x(remap(mouse_y, 0, height, TWO_PI, -TWO_PI))
  rotate_y(remap(mouse_x, 0, width, -TWO_PI, TWO_PI))
  cube(100)