Initial commit

assets/backpack/backpack.mtl

@@ -0,0 +1,16 @@
+# Blender MTL File: 'None'
+# Material Count: 1
+
+newmtl Scene_-_Root
+Ns 225.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800000 0.800000 0.800000
+Ks 0.500000 0.500000 0.500000
+Ke 0.0 0.0 0.0
+Ni 1.450000
+d 1.000000
+illum 2
+map_Kd diffuse.jpg
+map_Bump normal.png
+map_Ks specular.jpg
+

assets/backpack/source_attribution.txt

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+Model by Berk Gedik, from: https://sketchfab.com/3d-models/survival-guitar-backpack-low-poly-799f8c4511f84fab8c3f12887f7e6b36
+
+Modified material assignment (Joey de Vries) for easier load in OpenGL model loading chapter, and renamed albedo to diffuse and metallic to specular to match non-PBR lighting setup.

assets/logo/logo.py

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+import math
+
+cx, cy = 250, 250
+R_in = 52
+R_out = 188
+
+A_left_in = -10
+A_left_out = -16
+A_right_in = 14
+A_right_out = 34
+
+color = "#ffffff"
+
+
+def get_pt(r, angle_deg):
+    rad = math.radians(angle_deg)
+    return cx + r * math.sin(rad), cy - r * math.cos(rad)
+
+
+il_x, il_y = get_pt(R_in, A_left_in)
+ol_x, ol_y = get_pt(R_out, A_left_out)
+or_x, or_y = get_pt(R_out, A_right_out)
+ir_x, ir_y = get_pt(R_in, A_right_in)
+
+cpl_x, cpl_y = get_pt(120, -50)
+cpr_x, cpr_y = get_pt(120, -5)
+
+
+svg = f'''<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="500" height="500">
+  <circle cx="250" cy="250" r="215" stroke="{color}" stroke-width="18" fill="none"/>
+  <circle cx="250" cy="250" r="40" fill="{color}"/>
+  <g fill="{color}">'''
+
+for i in range(6):
+    svg += f'''
+    <path transform="rotate({i*60}, 250, 250)" d="M {il_x:.2f} {il_y:.2f} Q {cpl_x:.2f} {cpl_y:.2f} {ol_x:.2f} {ol_y:.2f} A {R_out} {R_out} 0 0 1 {or_x:.2f} {or_y:.2f} Q {cpr_x:.2f} {cpr_y:.2f} {ir_x:.2f} {ir_y:.2f} A {R_in} {R_in} 0 0 0 {il_x:.2f} {il_y:.2f} Z"/>'''
+
+svg += '''
+  </g>
+</svg>'''
+
+with open("logo.svg", "w") as f:
+    f.write(svg)

assets/logo/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="500" height="500">
+  <circle cx="250" cy="250" r="215" stroke="#ffffff" stroke-width="18" fill="none"/>
+  <circle cx="250" cy="250" r="40" fill="#ffffff"/>
+  <g fill="#ffffff">
+    <path transform="rotate(0, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+    <path transform="rotate(60, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+    <path transform="rotate(120, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+    <path transform="rotate(180, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+    <path transform="rotate(240, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+    <path transform="rotate(300, 250, 250)" d="M 240.97 198.79 Q 158.07 172.87 198.18 69.28 A 188 188 0 0 1 355.13 94.14 Q 239.54 130.46 262.58 199.54 A 52 52 0 0 0 240.97 198.79 Z"/>
+  </g>
+</svg>