Blender Sushi script that imports small size Pixel Art (under 128 x 128 pixel size) and convert it into a grid of 3D cubes with Vertex Color applied based on the pixel color.

jgbpy_pixelArtImportVertexColor.py

##### PIXEL ART IMPORT #####

'''
Import Pixel Art image and turn it into pixel 3D cubes, each colored based on the pixel sample grid
'''

import bpy

D = bpy.data

# Specify your image here, open it inside Blender Image Editor panel
image_file = 'suzanne_pixel.png'


img = D.images[image_file]
pixels = list(img.pixels)
grouped_list = [pixels[ipx:ipx+4] for ipx in range(0, len(pixels), 4)]


# Get width and height of image (in pixel)
w = width = img.size[0]  
h = height = img.size[1]


print("------LENGTH------")
print( len(img.pixels)//4)

print("------PIXEL------")
print(pixels)

print("---GROUPED-PIXEL---")
print(len(grouped_list))

# Create LIST of GRID XY value
rowColList=[]


for i in range(height):
    for j in range(width):
      rowColList.append(i)
      rowColList.append(j)


# SPLIT the LIST of XY
origList = rowColList
splitList = [origList[i:i+2] for i in range(0,len(origList),2)]

# Create a single material that respect Vertex Color
mat = bpy.data.materials.new('PixelVertexColorMat')
mat.use_vertex_color_paint = True
mat.use_vertex_color_light = True


for number in range(len(grouped_list)):


    # separate RGBA into each own variables
    r = grouped_list[number][0]
    g = grouped_list[number][1]
    b = grouped_list[number][2]
    a = grouped_list[number][3]


    # separate XY coordinate    
    x=splitList[number][0]
    y=splitList[number][1]


    # create cube at location XY
    bpy.ops.mesh.primitive_cube_add(location=(x-width/2, y-width/2, 0))
    selectedObject = bpy.context.selected_objects
    selectedObject[0].name = 'pixelcube.%s' % number
    selectedObject[0].scale = 0.45, 0.45, 0.45


    mesh = selectedObject[0]

    bpy.context.object.data.materials.append(mat)



    # ADD VERTEX COLOR SNIPPET


    # Create Vertex Color Layer for each selected meshes


    # bpy.context.selected_objects[0].data.vertex_colors


    mesh.data.vertex_colors.new()


    # Get Total Length of Vertex Colors for each selected meshes


    # len(bpy.context.selected_objects[0].data.vertex_colors[0].data)


    totalVertCol = len(mesh.data.vertex_colors[0].data)


     


    # Iterate over every mesh vertex color and give it a single colour


    for i in range(totalVertCol):
        mesh.data.vertex_colors[0].data[i].color = r, g, b

   
    # Print the progress
    print ('PixelCube {number} created at:'.format(number=number), x, y, ', with RGB color', r, g, b)