From a194612c70ba83dc46e1b1d12533380b3bc1ba44 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tobias=20Sch=C3=B6ner?= <tobias.stonehead@gmail.com>
Date: Tue, 21 Feb 2023 18:04:06 +0100
Subject: [PATCH] feat: add generator for holed plane
---
.../MeshGenerator/HoledPlaneGenerator.cs | 64 +++++++++++++++++++
.../MeshGenerator/HoledPlaneGenerator.cs.meta | 11 ++++
2 files changed, 75 insertions(+)
create mode 100644 Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs
create mode 100644 Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs.meta
diff --git a/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs b/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs
new file mode 100644
index 00000000..7fc04f48
--- /dev/null
+++ b/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs
@@ -0,0 +1,64 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+public class HoledPlaneGenerator : ShapeGenerator
+{
+ #region InspectorVariables
+ [Header("Plane values")]
+ public Vector2 planeSize = new(100, 100);
+ public Vector2 holeLocation = new(50, 50);
+ public float holeRadius = 1f;
+
+ [Header("Technical")]
+ [Range(4, 1000, order = 4)] public int holeSideCount = 500;
+
+ [Header("Parts")]
+ public MeshFilter planeMesh;
+ #endregion InspectorVariables
+
+ #region Implementation
+ protected override void GenerateShape()
+ {
+ AssignMesh(planeMesh, CreateHoledPlane(planeSize, holeLocation, holeRadius, holeSideCount));
+ }
+
+ private static (Vector3[] vertices, int[] triangles) CreateHoledPlane(Vector2 planeSize, Vector2 holeLocation, float holeRadius, int holeSideCount)
+ {
+ var corners = new Vector3[4] {
+ new Vector3( planeSize.x/2, 0, planeSize.y/2),
+ new Vector3( planeSize.x/2, 0, -planeSize.y/2),
+ new Vector3(-planeSize.x/2, 0, -planeSize.y/2),
+ new Vector3(-planeSize.x/2, 0, planeSize.y/2) };
+ var circlePoints = GetCirclePoints(holeRadius, holeSideCount, new Vector3(holeLocation.x, 0, holeLocation.y));
+ Vector3[] vertices = circlePoints.Union(corners).ToArray();
+
+ int[] triangles = new int[vertices.Length * 3];
+ int cpCount = circlePoints.Length;
+ int quarter = Mathf.FloorToInt((float)cpCount / 4);
+ int rest = cpCount % 4;
+
+ int start = 0;
+ for (int corner = 0; corner < 4; corner++)
+ {
+ int cornerIdx = cpCount + corner;
+ int end = start + (rest-- > 0 ? quarter + 1 : quarter);
+ for (int i = start; i < end; i++)
+ {
+ triangles[i * 3 + 0] = (i + 1) % cpCount;
+ triangles[i * 3 + 1] = i;
+ triangles[i * 3 + 2] = cornerIdx;
+ }
+ triangles[triangles.Length - ((corner+1)*3) + 0] = end % cpCount;
+ triangles[triangles.Length - ((corner+1)*3) + 1] = cornerIdx;
+ triangles[triangles.Length - ((corner+1)*3) + 2] = cpCount + (corner + 1) % 4;
+
+ start = end;
+ }
+
+
+ return (vertices, triangles);
+ }
+ #endregion Implementation
+}
\ No newline at end of file
diff --git a/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs.meta b/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs.meta
new file mode 100644
index 00000000..07e5b068
--- /dev/null
+++ b/Assets/Scripts/MeshGenerator/HoledPlaneGenerator.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9965b0da5ebc17848beccc46e84bd114
+MonoImporter:
+ externalObjects: {}
+ serializedVersion: 2
+ defaultReferences: []
+ executionOrder: 0
+ icon: {instanceID: 0}
+ userData:
+ assetBundleName:
+ assetBundleVariant:
--
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