Add geometry shapes example.

examples/models_geometric_shapes.lua

@@ -0,0 +1,46 @@
+local screenWidth = 800
+local screenHeight = 450
+
+rl.SetConfigFlags(rl.FLAG_VSYNC_HINT)
+rl.InitWindow(screenWidth, screenHeight, "raylua [models] example - geometric shapes")
+
+local camera = rl.new("Camera", {
+  position = rl.new("Vector3", 0, 10, 10),
+  target = rl.new("Vector3", 0, 0, 0),
+  up = rl.new("Vector3", 0, 1, 0),
+  fovy = 45,
+  type = rl.CAMERA_PERSPECTIVE
+})
+
+while not rl.WindowShouldClose() do
+  rl.BeginDrawing()
+  rl.ClearBackground(rl.RAYWHITE)
+
+  rl.BeginMode3D(camera)
+
+  -- Ideally, you should cache Vector3 structures to avoid reallocating them
+  -- over and over. For readability here, they are inlined to the code.
+
+  rl.DrawCube(rl.new("Vector3", -4, 0, 2), 2, 5, 2, rl.RED)
+  rl.DrawCubeWires(rl.new("Vector3", -4, 0, 2), 2, 5, 2, rl.GOLD)
+  rl.DrawCubeWires(rl.new("Vector3", -4, 0, -2), 3, 6, 2, rl.MAROON)
+
+  rl.DrawSphere(rl.new("Vector3", 1, 0, -2), 1, rl.GREEN)
+  rl.DrawSphereWires(rl.new("Vector3", 1, 0, 2), 2, 16, 16, rl.LIME)
+
+  rl.DrawCylinder(rl.new("Vector3", 4, 0, -2), 1, 2, 3, 4, rl.SKYBLUE)
+  rl.DrawCylinderWires(rl.new("Vector3", 4, 0, -2), 1, 2, 3, 4, rl.DARKBLUE)
+  rl.DrawCylinderWires(rl.new("Vector3", 4.5, -1, 2), 1, 1, 2, 6, rl.BROWN)
+
+  rl.DrawCylinder(rl.new("Vector3", 1, 0, -4), 0, 1.5, 3, 8, rl.GOLD)
+  rl.DrawCylinderWires(rl.new("Vector3", 1, 0, -4), 0, 1.5, 3, 8, rl.PINK)
+
+  rl.DrawGrid(10, 1)
+
+  rl.EndMode3D()
+
+  rl.DrawFPS(10, 10)
+  rl.EndDrawing()
+end
+
+rl.CloseWindow()