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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.IO; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
| using SkiaSharp; | ||
|
|
||
| namespace Voxels.CommandLine { | ||
| public class Slicer { | ||
| /// <summary> | ||
| /// Render each slice of the voxel data into a long single PNG file for use as a 3D texture in Unity. | ||
| /// Unity 3D textures are sliced along the Unity Z axis, which is the Voxel Y axis (front to back). | ||
| /// </summary> | ||
| /// <param name="voxels"></param> | ||
| /// <returns>A byte array of the voxel slices in PNG format.</returns> | ||
| public static byte[] RenderTexture3D(VoxelData voxels, int columns, int rows) { | ||
| using (var bitmap = new SKBitmap(voxels.Size.X*columns, voxels.Size.Z*rows)) { | ||
| if (bitmap == null) return null; | ||
|
|
||
| for (var y = 0; y < voxels.Size.Y; y++) { | ||
| var dx = (y%columns) * voxels.Size.X; | ||
| var dz = (y/columns) * voxels.Size.Z; | ||
| for (var x = 0; x < voxels.Size.X; x++) { | ||
| for (var z = 0; z < voxels.Size.Z; z++) { | ||
| var c = voxels.ColorOf(new XYZ(x, y, (voxels.Size.Z-z-1))); | ||
| bitmap.SetPixel(x + dx, z + dz, new SKColor(c.R, c.G, c.B, c.A)); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| using (var image = SKImage.FromBitmap(bitmap)) { | ||
| using (var data = image.Encode()) { | ||
| var ms = new MemoryStream(); | ||
| data.SaveTo(ms); | ||
| return ms.ToArray(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Unity does not like really wide textures so we have to create the most square texture we can. | ||
| /// </summary> | ||
| /// <param name="size"></param> | ||
| /// <param name="rows"></param> | ||
| /// <param name="columns"></param> | ||
| public static void MakeSquare(XYZ size, out int rows, out int columns) { | ||
| rows = 1; | ||
| columns = size.Y; | ||
|
|
||
| while (columns % 2 == 0) { | ||
| columns /= 2; | ||
| rows *= 2; | ||
|
|
||
| // Closest we can get to a square | ||
| if (columns <= rows) { | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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