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bostongfx · Dec 3, 2019 · 920e1ba · 920e1ba
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Showing 11 changed files with 60,700 additions and 325 deletions.
diff --git a/10/CS460_Assignment_10__Copy_.pdf b/10/CS460_Assignment_10__Copy_.pdf
diff --git a/10/Dragon 2.5_ply.ply b/10/Dragon 2.5_ply.ply
diff --git a/10/base64.js b/10/base64.js
@@ -1,24 +1,24 @@
-/**
- * Inspired from https://stackoverflow.com/a/36046727
- *
- * Modified to work directly with Float32Arrays and to match
- * the Python API.
- * 
- */
-var base64 = {};
-
-base64.b64encode = function (array) {
-
-    array = new Uint8Array(array.buffer);
-
-    return btoa(String.fromCharCode.apply(null, array));
-
-};
-
-base64.b64decode = function (str) {
-
-    array = atob(str).split('').map(function (c) { return c.charCodeAt(0); });
-
-    return new Float32Array(new Uint8Array(array).buffer);
-
-};
+/**
+ * Inspired from https://stackoverflow.com/a/36046727
+ *
+ * Modified to work directly with Float32Arrays and to match
+ * the Python API.
+ * 
+ */
+var base64 = {};
+
+base64.b64encode = function (array) {
+
+    array = new Uint8Array(array.buffer);
+
+    return btoa(String.fromCharCode.apply(null, array));
+
+};
+
+base64.b64decode = function (str) {
+
+    array = atob(str).split('').map(function (c) { return c.charCodeAt(0); });
+
+    return new Float32Array(new Uint8Array(array).buffer);
+
+};
diff --git a/10/column.gltf b/10/column.gltf
diff --git a/10/dragon.gltf b/10/dragon.gltf
diff --git a/10/gltf.py b/10/gltf.py
@@ -1,106 +1,163 @@
-import numpy as np
-import base64
-
-VERTICES = np.array([0.,0.,0.,    0.,1.,0.,    1.,0.,0.], dtype=np.float32)
-INDICES = np.array([0, 1, 2], dtype=np.ushort)
-
-HOWMANY = 3
-MAX_X = 1
-MAX_Y = 1
-MAX_Z = 0
-MIN_X = 0
-MIN_Y = 0
-MIN_Z = 0
-MAX = 2
-MIN = 0
-
-HOWMANYBYTES_V = VERTICES.nbytes
-HOWMANYBYTES_I = INDICES.nbytes
-
-B64_VERTICES = base64.b64encode(VERTICES)
-B64_INDICES = base64.b64encode(INDICES)
-
-gltf = {
-    "asset": {
-        "version": "2.0",
-        "generator": "CS460 Magic Fingers"
-    },
-
-  "accessors": [
-        {
-            "bufferView": 0,
-            "byteOffset": 0,
-            "componentType": 5126,
-            "count": HOWMANY,
-            "type": "VEC3",
-            "max": [MAX_X, MAX_Y, MAX_Z],
-            "min": [MIN_X, MIN_Y, MIN_Z]
-        },
-        {
-            "bufferView": 1,
-            "byteOffset": 0,
-            "componentType": 5123,
-            "count": HOWMANY,
-            "type": "SCALAR",
-            "max": [MAX],
-            "min": [MIN]
-        }
-    ], 
-
-    "bufferViews": [
-        {
-            "buffer": 0,
-            "byteOffset": 0,
-            "byteLength": HOWMANYBYTES_V,
-            "target": 34962
-        },
-        {
-            "buffer": 1,
-            "byteOffset": 0,
-            "byteLength": HOWMANYBYTES_I,
-            "target": 34963
-        }
-    ],
-
-    "buffers": [
-        {
-            "uri": "data:application/octet-stream;base64,"+str(B64_VERTICES, 'utf-8'),
-            "byteLength": HOWMANYBYTES_V
-        },
-        {
-            "uri": "data:application/octet-stream;base64,"+str(B64_INDICES, 'utf-8'),
-            "byteLength": HOWMANYBYTES_I
-        }
-    ],
-
-    "meshes": [
-        {
-            "primitives": [{
-                 "mode": 4,
-                 "attributes": {
-                     "POSITION": 0
-                 },
-                 "indices": 1
-            }]
-        }
-    ],
-
-    "nodes": [
-        {
-            "mesh": 0
-        }
-    ],
-
-    "scenes": [
-        {
-            "nodes": [
-                0
-            ]
-        }
-    ],
-
-    "scene": 0
-}
-
-print ( str(gltf).replace("'", '"') ) # we need double quotes instead of single quotes
-
+import numpy as np
+import base64
+
+with open("Dragon 2.5_ply.ply", 'r') as f:
+    lines = f.readlines()
+
+counter = 0
+vertices_coming = False
+faces_coming = False
+
+## get the infomation of vertices and faces
+for i,l in enumerate(lines):
+
+    if l.startswith('element vertex'):
+        vertexcounter = int(l.split(' ')[-1].strip())
+    elif l.startswith('element face'):
+        facecounter = int(l.split(' ')[-1].strip())
+    elif l.startswith('end_header'):
+        break
+
+vertex_data = lines[i+1:i+vertexcounter+1]
+face_data = lines[i+vertexcounter+1:]
+
+## create the VERTICES array
+VERTICES = []
+MAX_X = -np.inf
+MAX_Y = -np.inf
+MAX_Z = -np.inf
+MIN_X = np.inf
+MIN_Y = np.inf
+MIN_Z = np.inf
+
+## parse all vertices and find the required fields
+for v in vertex_data:
+    v = [float(v.strip()) for v in v.strip().split(' ')]
+
+    MAX_X = max(MAX_X, v[0])
+    MAX_Y = max(MAX_Y, v[1])
+    MAX_Z = max(MAX_Z, v[2])
+    MIN_X = min(MIN_X, v[0])
+    MIN_Y = min(MIN_Y, v[1])
+    MIN_Z = min(MIN_Z, v[2])    
+
+    VERTICES += v
+
+## parse all indices and find the required fields
+INDICES = []
+MAX = -np.inf
+MIN = np.inf
+for i in face_data:
+    i = [int(i) for i in i.strip().split(' ')[1:]]
+    INDICES += i
+
+    MAX = max(MAX, i[0])
+    MAX = max(MAX, i[1])
+    MAX = max(MAX, i[2])
+    MIN = min(MIN, i[0])
+    MIN = min(MIN, i[1])
+    MIN = min(MIN, i[2])
+
+VERTICES = np.array(VERTICES, dtype=np.float32)
+INDICES = np.array(INDICES, dtype=np.ushort)
+
+
+HOWMANY_V = len(VERTICES) / 3 # because its the number of VEC3 groups
+HOWMANY_I = len(INDICES)
+
+HOWMANYBYTES_V = VERTICES.nbytes
+HOWMANYBYTES_I = INDICES.nbytes
+
+## base 64 code
+B64_VERTICES = base64.b64encode(VERTICES)
+B64_INDICES = base64.b64encode(INDICES)
+
+## generate the glTF JSON code
+gltf = {
+    "asset": {
+        "version": "2.0",
+        "generator": "CS460 Magic Fingers"
+    },
+
+  "accessors": [
+        {
+            "bufferView": 0,
+            "byteOffset": 0,
+            "componentType": 5126,
+            "count": HOWMANY_V,
+            "type": "VEC3",
+            "max": [MAX_X, MAX_Y, MAX_Z],
+            "min": [MIN_X, MIN_Y, MIN_Z]
+        },
+        {
+            "bufferView": 1,
+            "byteOffset": 0,
+            "componentType": 5123,
+            "count": HOWMANY_I,
+            "type": "SCALAR",
+            "max": [MAX],
+            "min": [MIN]
+        }
+    ], 
+
+    "bufferViews": [
+        {
+            "buffer": 0,
+            "byteOffset": 0,
+            "byteLength": HOWMANYBYTES_V,
+            "target": 34962
+        },
+        {
+            "buffer": 1,
+            "byteOffset": 0,
+            "byteLength": HOWMANYBYTES_I,
+            "target": 34963
+        }
+    ],
+
+    "buffers": [
+        {
+            "uri": "data:application/octet-stream;base64,"+str(B64_VERTICES),
+            "byteLength": HOWMANYBYTES_V
+        },
+        {
+            "uri": "data:application/octet-stream;base64,"+str(B64_INDICES),
+            "byteLength": HOWMANYBYTES_I
+        }
+    ],
+
+    "meshes": [
+        {
+            "primitives": [{
+                 "mode": 4,
+                 "attributes": {
+                     "POSITION": 0
+                 },
+                 "indices": 1
+            }]
+        }
+    ],
+
+    "nodes": [
+        {
+            "mesh": 0
+        }
+    ],
+
+    "scenes": [
+        {
+            "nodes": [
+                0
+            ]
+        }
+    ],
+
+    "scene": 0
+}
+
+
+print ( str(gltf).replace("'", '"') ) # we need double quotes instead of single quotes
+
+text_file = open("dragon.gltf", "w")
+n = text_file.write(str(gltf).replace("'", '"'))
+text_file.close()
diff --git a/10/golden_column.ply b/10/golden_column.ply
diff --git a/10/golden_column_0.jpg b/10/golden_column_0.jpg