61 lines
2.2 KiB
C#
61 lines
2.2 KiB
C#
// Copyright (c) Wojciech Figat. All rights reserved.
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using FlaxEngine;
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namespace FlaxEditor.Tools.Terrain.Sculpt
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{
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/// <summary>
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/// Terrain holes creating tool mode edits terrain holes mask by changing area affected by brush.
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/// </summary>
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/// <seealso cref="FlaxEditor.Tools.Terrain.Sculpt.Mode" />
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[HideInEditor]
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public sealed class HolesMode : Mode
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{
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/// <inheritdoc />
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public override bool SupportsNegativeApply => true;
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/// <inheritdoc />
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public override bool EditHoles => true;
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/// <summary>
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/// Initializes a new instance of the <see cref="HolesMode"/> class.
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/// </summary>
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public HolesMode()
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{
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Strength = 6.0f;
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}
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/// <inheritdoc />
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public override unsafe void ApplyBrushToPatch(ref ApplyParams p)
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{
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var strength = p.Strength * -10.0f;
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var brushPosition = p.Gizmo.CursorPosition;
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var tempBuffer = (byte*)p.TempBuffer;
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// Apply brush modification
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Profiler.BeginEvent("Apply Brush");
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for (int z = 0; z < p.ModifiedSize.Y; z++)
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{
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var zz = z + p.ModifiedOffset.Y;
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for (int x = 0; x < p.ModifiedSize.X; x++)
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{
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var xx = x + p.ModifiedOffset.X;
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var sourceMask = p.SourceHolesMask[zz * p.HeightmapSize + xx] != 0 ? 1.0f : 0.0f;
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var samplePositionLocal = p.PatchPositionLocal + new Vector3(xx * FlaxEngine.Terrain.UnitsPerVertex, 0, zz * FlaxEngine.Terrain.UnitsPerVertex);
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Vector3.Transform(samplePositionLocal, p.TerrainWorld, out Vector3 samplePositionWorld);
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samplePositionWorld.Y = brushPosition.Y;
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var paintAmount = p.Brush.Sample(ref brushPosition, ref samplePositionWorld);
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tempBuffer[z * p.ModifiedSize.X + x] = (byte)((sourceMask + paintAmount * strength) < 0.8f ? 0 : 255);
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}
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}
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Profiler.EndEvent();
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// Update terrain patch
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TerrainTools.ModifyHolesMask(p.Terrain, p.PatchCoord, tempBuffer, p.ModifiedOffset, p.ModifiedSize);
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}
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}
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}
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