Упрощенный прямоугольник

models/plane2.mtl

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+# 3ds Max Wavefront OBJ Exporter v0.99 - (c)2007 guruware
+# File Created: 13.02.2023 15:32:55
+
+newmtl wire_135059008
+	Ns 32
+	d 1
+	Tr 0
+	Tf 1 1 1
+	illum 2
+	Ka 0.05 0.05 0.05
+	Kd 0.5 0.5 0.5
+	Ks 0.3500 0.3500 0.3500

models/plane2.obj

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+# 3ds Max Wavefront OBJ Exporter v0.99 - (c)2007 guruware
+# File Created: 13.02.2023 15:32:55
+
+mtllib plane2.mtl
+
+#
+# object Plane001
+#
+
+v  -0.5000 -0.5000 0.0000
+v  0.5000 -0.5000 0.0000
+v  0.5000 0.5000 0.0000
+v  -0.5000 0.5000 0.0000
+# 4 vertices
+
+vn 0.0000 0.0000 -1.0000
+# 1 vertex normals
+
+vt 1.0000 1.0000 0.0000
+vt 1.0000 0.0000 0.0000
+vt 0.0000 0.0000 0.0000
+vt 0.0000 1.0000 0.0000
+# 4 texture coords
+
+o Plane001
+g Plane001
+usemtl wire_135059008
+s 1
+f 1/1/1 2/2/1 3/3/1 
+f 3/3/1 4/4/1 1/1/1 
+# 2 polygons
+