Init

Author: juniorxsound

.DS_Store

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Assets/Volume.meta

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+using UnityEngine;
+
+[RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
+[ExecuteInEditMode]
+public class VolumeGeometry : MonoBehaviour {
+
+    //Top bottom texture slot
+    public Texture VolumeTexture;
+
+    //Reference to the Volume shader
+    public Shader VolumeShader;
+
+    //Mesh density dropdown menu
+    public enum Density {
+        Medium, Low
+    }
+    public Density _meshDensity = Density.Medium;
+
+    //Drawing style
+    public enum DrawingStyle{
+        Points
+    }
+    public DrawingStyle _drawingStyle = DrawingStyle.Points;
+
+    //Private mesh width, height variables
+    private int xSize, ySize;
+
+
+	private void Awake () {
+		Generate();
+        createMaterial();
+	}
+
+    private void calculateDensity () {
+        switch(_meshDensity){
+            case Density.Medium:
+                xSize = 256;
+                ySize = 256;
+                break;
+            case Density.Low:
+                xSize = 128;
+                ySize = 128;
+                break;
+            default:
+                xSize = 256;
+                ySize = 256;
+                break;
+        }
+    }
+
+	private void Generate () {
+
+        Mesh mesh;
+        Vector3[] vertices;
+
+        calculateDensity();
+
+        mesh = GetComponent<MeshFilter>().mesh = new Mesh();
+        //mesh = 
+        mesh.bounds = new Bounds(Vector3.zero, 10000f * Vector3.one);
+        mesh.name = "Volume Grid";
+
+		vertices = new Vector3[(xSize + 1) * (ySize + 1)];
+		Vector2[] uv = new Vector2[vertices.Length];
+		Vector4[] tangents = new Vector4[vertices.Length];
+		Vector4 tangent = new Vector4(1f, 0f, 0f, -1f);
+		for (int i = 0, y = 0; y <= ySize; y++) {
+			for (int x = 0; x <= xSize; x++, i++) {
+				vertices[i] = new Vector3(x, y);
+				uv[i] = new Vector2((float)x / xSize, (float)y / ySize);
+				tangents[i] = tangent;
+			}
+		}
+		mesh.vertices = vertices;
+		mesh.uv = uv;
+		mesh.tangents = tangents;
+
+		int[] triangles = new int[xSize * ySize * 6];
+		for (int ti = 0, vi = 0, y = 0; y < ySize; y++, vi++) {
+			for (int x = 0; x < xSize; x++, ti += 6, vi++) {
+				triangles[ti] = vi;
+				triangles[ti + 3] = triangles[ti + 2] = vi + 1;
+				triangles[ti + 4] = triangles[ti + 1] = vi + xSize + 1;
+				triangles[ti + 5] = vi + xSize + 2;
+			}
+		}
+		mesh.triangles = triangles;
+		mesh.RecalculateNormals();
+
+        //Set the drawing mesh topolgy
+        mesh.SetIndices(mesh.triangles, MeshTopology.Points, 0);
+
+	}
+
+	private void createMaterial(){
+        
+        Renderer rend = GetComponent<Renderer>();
+        rend.sharedMaterial = new Material(VolumeShader);
+        rend.sharedMaterial.mainTexture = VolumeTexture;
+        rend.sharedMaterial.SetFloat("_Displacement", 100.0f);
+
+    }
+}