51 lines
1.6 KiB
C#
51 lines
1.6 KiB
C#
using Unity.Mathematics;
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namespace Misaki.ArtTool
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{
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internal static partial class ShapeHelper
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{
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internal static float3 GetCubePosition(int index, int3 size)
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{
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float3 localPosition;
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var yIndex = index / (size.x * size.z);
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var remain = index % (size.x * size.z);
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var zIndex = remain / size.x;
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var xIndex = remain % size.x;
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localPosition = new float3(xIndex, yIndex, zIndex);
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localPosition -= (float3)(size - 1) * 0.5f;
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return localPosition;
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}
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internal static bool GetMeshVertexPosition(int index, MeshData meshData, out float3 position)
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{
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if (!meshData.vertices.IsCreated || meshData.vertices.Length <= index)
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{
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position = float3.zero;
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return false;
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}
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position = meshData.vertices[index];
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return true;
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}
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internal static bool GetMeshEdgePosition(int index, MeshData meshData, out float3 position)
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{
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if (!meshData.edges.IsCreated || meshData.edges.Length <= index)
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{
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position = float3.zero;
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return false;
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}
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var edge = meshData.edges[index];
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if (meshData.vertices.Length <= edge.x || meshData.vertices.Length <= edge.y)
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{
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position = float3.zero;
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return false;
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}
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position = (meshData.vertices[edge.x] + meshData.vertices[edge.y]) / 2.0f;
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return true;
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}
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}
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} |