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amalgamation.py
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import copy
import json
import math
def middle_group():
group = {
'type': 'group',
'children': [
{
"type": "sphere",
"name": "middle_sphere",
"transform": [['rotate_y', math.pi * 1.3], ['rotate_x', -math.pi / 4], ['rotate_z', -math.pi / 4],
["translate", [-0.5, 1, 0.5]]],
'material': {
'pattern': {
'type': 'texture',
'path': 'examples/ppms/map_green.ppm',
'uv_pattern': 'image',
},
'diffuse': 0.7,
'specular': 0.3,
'reflectivity': 0.5
}
},
cube,
cylinders()
]
}
group['children'] += cones()
return group
def cones():
base_color = [1.0, 168.0 / 255.0, 18.0 / 255.0]
rotate_and_translate = [['rotate_z', -math.pi / 4], ["translate", [-0.5, 1, 0.5]]]
cone = {
'type': 'cone',
'minimum': -1.0,
'maximum': 0,
'closed': True,
'material': {
'pattern': {
'type': 'stripe',
'components': ['white', base_color],
'transform': [['scale', [0.15, 0.15, 0.15]], ['rotate_z', math.pi / 2.0]]
}
},
'transform': [['scale', [0.5 / 3, 0.5, 0.5 / 3]], ['translate', [0, 1.7, 0]]] + rotate_and_translate
}
base = {
'type': 'cylinder',
'closed': True,
'minimum': -0.1,
'maximum': 0.1,
'material': {
'color': base_color
},
'transform': [['scale', [0.2, 1.0, 0.2]], ['translate', [0, 1.1, 0]]] + rotate_and_translate
}
return [base, cone]
def cylinders():
colors = [[40, 103, 160], [72, 120, 170], [99, 141, 187], [121, 158, 196], [157, 179, 208]]
offset_scale = 0.8 / 3
acc = [
{
"type": "cylinder",
"minimum": -0.1,
"maximum": 0.1,
"material": {
"color": [7.0 / 255, 87.0 / 255, 152.0 / 255]
},
"transform": [["scale", [offset_scale, 1, offset_scale]], ["translate", [-0.5, 2.1, 0.5]]]
}
]
for i in range(0, 5):
last = acc[-1]
factor = 0.2 / 3
scale_factor = offset_scale - ((i + 1) * factor)
if scale_factor < factor:
scale_factor = offset_scale / math.pow(2, i)
r, g, b = colors[i]
new_mat = copy.deepcopy(last['material'])
new_mat['color'] = [r / 255.0, g / 255.0, b / 255.0]
new_cyl = {
'type': 'cylinder',
'minimum': last['minimum'] - 0.1 / 3,
'maximum': last['maximum'] + 0.1 / 3,
'material': new_mat,
'transform': [['scale', [scale_factor, 1, scale_factor]], ['translate', [-0.5, last['maximum'] + 2.1, 0.5]]]
}
acc.append(new_cyl)
return {'type': 'group', 'children': acc}
def right_group():
return {
'type': 'group',
'children': [
{
"type": "sphere",
"name": "right_sphere",
"transform": [['scale', [0.9, 0.9, 0.9]], ['rotate_y', math.pi / 2], ["translate", [2.1, 0.9, 2]]],
"material": {
'pattern': {
'type': 'texture',
'path': 'examples/ppms/light_red_marble.ppm',
'uv_pattern': 'image',
},
"reflectivity": 0.5
}
},
{
'type': 'sphere',
'name': 'right_sphere_moon',
'transform': [["scale", [0.3, 0.3, 0.3]], ["translate", [2.1, 2.1, 2]]],
'material': {
'color': [0.8, 0.8, 0.8],
'reflectivity': 0.5
}
},
{
'type': 'sphere',
'name': 'glass_sphere',
'transform': [['scale', [0.25, 0.25, 0.25]], ['translate', [0.7, 0.85, -1.5]]],
'material': {
'color': [0.2, 0.2, 0.2],
'diffuse': 0.01,
'specular': 1,
'shininess': 300,
'transparency': 1,
'reflectivity': 1,
'refractive_index': 1.5
}
}
]
}
rest_of_spheres = [
{
"type": "sphere",
"name": "left_sphere",
"transform": [["scale", [0.35, 0.35, 0.35]], ["translate", [-1.7, 0.35, -0.75]]],
"material": {
'pattern': {
'type': 'texture',
'path': 'examples/ppms/blue_marble.ppm',
'uv_pattern': 'image',
},
"reflectivity": 0.5
}
},
{
'type': 'sphere',
'name': 'colossal',
'transform': [['scale', [4, 4, 4]], ['translate', [4, -3, -2]]],
'material': {
'color': [225 / 255.0, 193.0 / 255, 110.0 / 255],
'reflectivity': 0.3
}
},
{
'type': 'sphere',
'name': 'far_away_sphere',
'transform': [['translate', [-15, 5, 25]]],
'material': {
"diffuse": 0.7,
"specular": 0.3,
"pattern": {
"type": "ring",
"components": [[1, 0.8, 0.1], 'white'],
"transform": [["scale", [0.33, 0.33, 0.33]]]
},
"reflectivity": 0.5
}
},
]
background = {
'type': 'plane',
'material': {
'pattern': {
'type': 'gradient',
'components': ['white', [0.5, 0.7, 1.0]],
'transform': [['scale', [410, 1, 1]]],
},
'specular': 0,
'transparency': 1,
},
'transform': [['rotate_x', -math.pi / 2], ['rotate_z', math.pi / 2], ['translate', [0, 115, 500]]]
}
cube = {
"type": "cube",
"transform": [["scale", [0.13, 0.17, 0.13]], ['translate', [0, 1.17, 0]], ['rotate_z', math.pi / 4],
['rotate_y', -math.pi / 4], ['rotate_x', -math.pi / 4], ["translate", [-0.5, 1, 0.5]]],
"material": {
"diffuse": 0.7,
"specular": 0.3,
'color': [1, 1, 143.0 / 255],
'reflectivity': 0.23
}
}
sphere_group = {
'type': 'group',
'children': [middle_group(), right_group()],
'threshold': 2,
}
data = {
"camera": {
"h_size": 1000,
"v_size": 563,
"field_of_view": math.pi / 3,
"transform": [[0, 1.5, -5], [0, 1, 0], [0, 1, 0]],
"anti-aliasing": True,
},
"world": {
"light": {"position": [-2, 13, -7], "intensity": [1, 1, 1]},
"objects": [background, sphere_group] + rest_of_spheres
}
}
print(json.dumps(data, indent=2))