private bool Height(Terrain terrain, IOnPaint editContext, Vector2 currUV, Vector2 prevUV)
{
// the brush size is relative to the main brush size
float brushSize = editContext.brushSize * heightBrushSize / 100f;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, currUV, brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float brushStrength = heightBrushStrength / 100f;
brushStrength = Event.current.shift ? -brushStrength : brushStrength;
brushStrength *= 0.001f; // magic number ...
Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Raise or Lower Height");
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), m_SelectedTerrainLayer);
if (paintContext == null)
{
return(false);
}
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
// apply brush
float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
Vector4 brushParams = new Vector4(editContext.brushStrength, targetAlpha, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintTexture);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
return(true);
}
private bool Smooth(Terrain terrain, IOnPaint editContext, Vector2 currUV, BrushSettings brushSettings)
{
// the brush size is relative to the main brush size
float brushSize = brushSettings.brushSize * this.smoothBrushSize / 100f;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, brushSize, brushSettings.brushRotationDegrees);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds());
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float brushStrength = smoothBrushStrength / 100f; // editContext.brushStrength;
// brushStrength = Event.current.shift ? -brushStrength : brushStrength;
Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.SmoothHeights);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Smooth Height");
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (Event.current.type == EventType.MouseDown)
{
m_PrevBrushPos = editContext.uv;
return(false);
}
if (Event.current.type == EventType.MouseDrag && m_PreviousEvent == EventType.MouseDrag)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Vector2 smudgeDir = editContext.uv - m_PrevBrushPos;
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
Vector4 brushParams = new Vector4(editContext.brushStrength, smudgeDir.x, smudgeDir.y, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Smudge Height");
m_PrevBrushPos = editContext.uv;
}
m_PreviousEvent = Event.current.type;
return(false);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (splatPaintRules == null)
{
return(false);
}
Material mat = GetPaintMaterial();
mat.SetTexture("_BrushTex", editContext.brushTexture);
// gathering heightmap
BrushTransform brushXformForGatheringHeightmap = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContextForGatheringHeightmap = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXformForGatheringHeightmap.GetBrushXYBounds(), 1);
if (paintContextForGatheringHeightmap == null)
{
return(false);
}
RenderTexture gatheredHeightmap = RenderTexture.GetTemporary(terrain.terrainData.heightmapTexture.descriptor);
Graphics.Blit(paintContextForGatheringHeightmap.sourceRenderTexture, gatheredHeightmap); //, TerrainPaintUtility.GetBlitMaterial(), 0);
TerrainPaintUtility.ReleaseContextResources(paintContextForGatheringHeightmap);
// painting alphamap
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), m_SelectedTerrainLayer);
if (paintContext == null)
{
return(false);
}
float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
Vector4 brushParams = new Vector4(editContext.brushStrength, targetAlpha, splatPaintRules.useHeightTransition ? 1f : 0f, splatPaintRules.useAngleTransition ? 1f : 0f);
Vector4 paintRulesParametersHeight = new Vector4(splatPaintRules.minHeightStart, splatPaintRules.minHeightEnd, splatPaintRules.maxHeightStart, splatPaintRules.maxHeightEnd);
Vector4 paintRulesParametersAngle = new Vector4(splatPaintRules.minAngleStart, splatPaintRules.minAngleEnd, splatPaintRules.maxAngleStart, splatPaintRules.maxAngleEnd);
Vector4 paintRulesInversionAndUsage = new Vector4(splatPaintRules.inverseHeightRule ? 1f : 0f, splatPaintRules.inverseAngleRule ? 1f : 0f, splatPaintRules.applyHeightRule ? 1f : 0f, splatPaintRules.applyAngleRule ? 1f : 0f);
mat.SetVector("_BrushParams", brushParams);
mat.SetVector("_TerrainSize", (Vector4)terrain.terrainData.size);
mat.SetVector("_PaintRulesParametersHeight", paintRulesParametersHeight);
mat.SetVector("_PaintRulesParametersAngle", paintRulesParametersAngle);
mat.SetVector("_PaintRulesInversionAndUsage", paintRulesInversionAndUsage);
mat.SetTexture("_Heightmap", gatheredHeightmap);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
RenderTexture.ReleaseTemporary(gatheredHeightmap);
return(true);
}
private bool PaintTexture(Terrain terrain, IOnPaint editContext, Vector2 currUV)
{
// the brush size is relative to the main brush size
float brushSize = editContext.brushSize * paintBrushSize / 100f;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, currUV, brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), m_SelectedInnerTerrainLayer);
if (paintContext == null)
{
return(false);
}
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
float brushStrength = paintBrushStrength / 100f; // editContext.brushStrength
// apply brush
Vector4 brushParams = new Vector4(brushStrength, targetAlpha, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintTexture);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
return(true);
}
public bool OnPaint(Terrain terrain, IOnPaint editContext, float brushSize, float brushRotation, float brushStrength, Vector2 uv)
{
if (Event.current != null && Event.current.shift)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, uv, brushSize, brushRotation);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds());
Material mat = GetMaterial(); //TerrainPaintUtility.GetBuiltinPaintMaterial();
float m_direction = 0.0f; //TODO: UI for this
Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
Vector4 smoothWeights = new Vector4(
Mathf.Clamp01(1.0f - Mathf.Abs(m_direction)), // centered
Mathf.Clamp01(-m_direction), // min
Mathf.Clamp01(m_direction), // max
kernelSize); // blur kernel size
mat.SetVector("_SmoothWeights", smoothWeights);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
RenderTexture temp = RenderTexture.GetTemporary(paintContext.destinationRenderTexture.descriptor);
Graphics.Blit(paintContext.sourceRenderTexture, temp, mat, 0);
Graphics.Blit(temp, paintContext.destinationRenderTexture, mat, 1);
RenderTexture.ReleaseTemporary(temp);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Smooth Height");
return(true);
}
return(false);
}
private bool Bridge(Terrain terrain, IOnPaint editContext, Vector2 currUV, float pct, Vector3 stroke, Vector3 startPoint)
{
float heightOffset = heightProfile.Evaluate(pct) / terrain.terrainData.size.y;
float strengthScale = strengthProfile.Evaluate(pct);
float widthScale = widthProfile.Evaluate(pct);
float finalHeight = (startPoint + pct * stroke).z + heightOffset;
int finalBrushSize = (int)(widthScale * (float)editContext.brushSize);
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, currUV, finalBrushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds());
Material mat = GetMaterial();
Vector4 brushParams = new Vector4();
mat.SetTexture("_BrushTex", editContext.brushTexture);
brushParams.x = editContext.brushStrength * strengthScale;
brushParams.y = 0.5f * finalHeight;
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Bridge");
return(true);
}
private bool Smudge(Terrain terrain, IOnPaint editContext, Vector2 currUV, Vector2 prevUV)
{
// the brush size is relative to the main brush size
float brushSize = editContext.brushSize * ridgeErodeBrushSize / 100f;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, currUV, brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Vector2 smudgeDir = editContext.uv - prevUV;
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetMaterial();
float brushStrength = ridgeErodeBrushStrength / 100f; // editContext.brushStrength;
Vector4 brushParams = new Vector4(brushStrength, erosionStrength, mixStrength, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Ridge Erode");
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
float finalPinchAmount = m_PinchAmount * 0.005f; //scale to a reasonable value and negate so default mode is clockwise
if (Event.current.shift)
{
finalPinchAmount *= -1.0f;
}
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
Vector4 brushParams = new Vector4(editContext.brushStrength, 0.0f, finalPinchAmount, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Pinch Height");
return(false);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
Vector2 uv = editContext.uv;
if (Event.current.shift)
{
height = terrain.terrainData.GetInterpolatedHeight(uv.x, uv.y) / terrain.terrainData.size.y;
return(true);
}
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
int currentMode = (int)mode;
if (Event.current.control)
{
currentMode *= -1;
}
float modeValue = Mathf.Clamp01(currentMode);
Vector4 brushParams = new Vector4(editContext.brushStrength, 0.5f * height, modeValue, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Directional Flatten Height");
return(false);
}
/// <summary>
/// This is the handler that is called when one of the gizmo is moved.
/// </summary>
/// <param name="gizmo">
/// The gizmo that was dragged.
/// </param>
/// <param name="handleId">
/// The id of the handle that is being dragged.
/// </param>
private void OnGizmoDragUpdate(Gizmo gizmo, int handleId)
{
// This is where we want to adjust the position of the TerrainData heights for mesh control points
// and change the terrain height. First, we need to check the drag
// channel. The drag channel informs us about the kind of drag that is
// being applied (offset, rotation or scale). Tt will most
// likely always be offset, but it's safer to always check.
if (gizmo.ActiveDragChannel == GizmoDragChannel.Offset)
{
#if FALSE
Vector3 pos = transform.position;
Vector2 pos2 = new Vector2(pos.x, pos.z);
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(theTerrain, pos2, gcount, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(theTerrain, brushXform.GetBrushXYBounds(), 1);
//float finalPinchAmount = m_PinchAmount * 0.005f; //scale to a reasonable value and negate so default mode is clockwise
//if (Event.current.shift)
//{
// finalPinchAmount *= -1.0f;
//}
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
Vector4 brushParams = new Vector4(1.0f, 0.0f, 1.0f /*finalPinchAmount*/, 0.0f);
mat.SetFloatArray("_Brush", grid);
mat.SetFloat("_BrushSize", gcount);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, null);
#endif
// We are offsetting the gizmo. Good. Now we need to apply the drag offset to the TerrainData (or mesh control point)
// associated with the gizmo.
// Note: pseudo code to adjust TerrainData heights.
// The gizmo positions and terrain heights don't match up after a gizmo move - this pseudo code is just meant to show the concept.
// Depending on what we come up with, I feel a terrain mesh with vertice control points might be the best method?
// Get the amount of height change from the gizmo move.
switch (interpolation)
{
case Interpolation.Bilinear: UpdateTerrainBilinear(gizmo); break;
case Interpolation.Bicubic: UpdateTerrainBicubic(gizmo); break;
}
// ideally use a mesh instead of TerrainData and change control points? e.g. controlPoint.Position += dragOffset;
// The control point could be moved using the amount of drag that was applied to the gizmo.
// As I mentioned, the the Ogre application I did, the terrain was a mesh generated by creating a spline from control points
// and tessellated into a mesh so the result from the spline was a fairly smooth mesh.
// I'm open to the best method we can come up with that is easy for the user to adjust terrain with and also allow importing
// of control points from 2D CAD data to build the mesh.
}
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform, Material mat)
{
Vector4 brushParams = new Vector4(brushStrength, m_FeatureSize, m_BevelAmountInterior, 0.0f);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
}
private void ApplyHeightmap(PaintContext sampleContext, PaintContext targetContext, BrushTransform targetXform,
Terrain targetTerrain, Texture brushTexture, float brushStrength)
{
Material paintMat = GetPaintMaterial();
Vector4 brushParams = new Vector4(brushStrength, m_StampingOffsetFromClone * 0.5f, targetTerrain.terrainData.size.y, 0f);
paintMat.SetTexture("_BrushTex", brushTexture);
paintMat.SetVector("_BrushParams", brushParams);
paintMat.SetTexture("_CloneTex", sampleContext.sourceRenderTexture);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(targetContext, targetXform, paintMat);
Graphics.Blit(targetContext.sourceRenderTexture, targetContext.destinationRenderTexture, paintMat, (int)ShaderPasses.CloneHeightmap);
}
public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
{
commonUI.OnSceneGUI2D(terrain, editContext);
// only do the rest if user mouse hits valid terrain or they are using the
// brush parameter hotkeys to resize, etc
if (!editContext.hitValidTerrain && !commonUI.isInUse)
{
return;
}
// update brush UI group
commonUI.OnSceneGUI(terrain, editContext);
// dont render preview if this isnt a repaint. losing performance if we do
if (Event.current.type != EventType.Repaint)
{
return;
}
using (IBrushRenderPreviewUnderCursor brushPreview =
new BrushRenderPreviewUIGroupUnderCursor(commonUI, "NoiseHeightTool", editContext.brushTexture))
{
float brushSize = commonUI.brushSize;
float brushStrength = Event.current.control ? -commonUI.brushStrength : commonUI.brushStrength;
Vector3 brushPosWS = commonUI.raycastHitUnderCursor.point;
brushPreview.CalculateBrushTransform(out var brushXform);
PaintContext ctx = brushPreview.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(ctx.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(ctx, texelCtx, brushXform, previewMaterial);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 0);
ApplyBrushInternal(terrain, ctx, brushXform, brushPosWS, commonUI.brushRotation,
brushStrength, brushSize, editContext.brushTexture);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(ctx, brushXform, previewMaterial);
// restore old render target
RenderTexture.active = ctx.oldRenderTexture;
previewMaterial.SetTexture("_HeightmapOrig", ctx.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.DestinationRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 1);
texelCtx.Cleanup();
TerrainPaintUtility.ReleaseContextResources(ctx);
}
}
/// <summary>Terraces the HeightMap.</summary>
/// <param name="featureSize">The height of each terrace.</param>
/// <param name="interiorCornerWeight">The weight of the terrace effect.</param>
public static void TerraceErodeHeightmap(float featureSize, float interiorCornerWeight)
{
Material mat = new Material((Shader)AssetDatabase.LoadAssetAtPath("Packages/com.unity.terrain-tools/Shaders/TerraceErosion.shader", typeof(Shader)));
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(Land, heightmapCentre, Land.terrainData.size.x, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(Land, brushXform.GetBrushXYBounds());
Vector4 brushParams = new Vector4(1.0f, featureSize, interiorCornerWeight, 0.0f);
mat.SetTexture("_BrushTex", terrainFilterTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Filter - TerraceErosion");
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
Vector4 brushParams = new Vector4(0.01f * brushStrength, 0.0f, m_StampHeight, 0.0f);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.StampHeight);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (Event.current.type == EventType.MouseDown)
{
m_PrevBrushPos = editContext.uv;
return(false);
}
if (Event.current.type == EventType.MouseDrag && m_PreviousEvent == EventType.MouseDrag)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Vector2 smudgeDir = editContext.uv - m_PrevBrushPos;
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
Vector4 brushParams = new Vector4(editContext.brushStrength, smudgeDir.x, smudgeDir.y, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Masked Smudge");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
m_PrevBrushPos = editContext.uv;
}
m_PreviousEvent = Event.current.type;
return(false);
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform, Terrain terrain)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float brushTargetHeight = Mathf.Clamp01((m_TargetHeight - paintContext.heightWorldSpaceMin) / paintContext.heightWorldSpaceSize);
Vector4 brushParams = new Vector4(brushStrength * 0.01f, PaintContext.kNormalizedHeightScale * brushTargetHeight, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.SetHeights);
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform, Terrain terrain)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float terrainHeight = Mathf.Clamp01((m_HeightWorldSpace - terrain.transform.position.y) / terrain.terrainData.size.y);
Vector4 brushParams = new Vector4(brushStrength * 0.01f, 0.5f * terrainHeight, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.SetHeights);
}
/// <summary>Smooths the terrain.</summary>
/// <param name="filterStrength">The strength of the smoothing.</param>
/// <param name="blurDirection">The direction the smoothing should preference. Between -1f - 1f.</param>
public static void SmoothHeightmap(float filterStrength, float blurDirection)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(Land, heightmapCentre, Land.terrainData.size.x, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(Land, brushXform.GetBrushXYBounds());
Vector4 brushParams = new Vector4(filterStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", terrainFilterTexture);
mat.SetVector("_BrushParams", brushParams);
Vector4 smoothWeights = new Vector4(Mathf.Clamp01(1.0f - Mathf.Abs(blurDirection)), Mathf.Clamp01(-blurDirection), Mathf.Clamp01(blurDirection), 0.0f);
mat.SetVector("_SmoothWeights", smoothWeights);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.SmoothHeights);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Filter - Smooth Heights");
}
private bool DoPaint(Terrain terrain, float brushStrength, Texture brushTexture, BrushTransform brushXform)
{
Rect rect = brushXform.GetBrushXYBounds();
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
if (paintContext == null)
{
return(false);
}
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
Vector4 brushParams = new Vector4(brushStrength, 0.0f, m_FeatureSize, 0);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Masked Smooth Sharpen");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
Rect rect = brushXform.GetBrushXYBounds();
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, rect, 1);
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
// apply brush
Vector4 brushParams = new Vector4(
editContext.brushStrength,
m_ErosionStrength,
m_MixStrength,
0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Masked Ridge Erode");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
return(false);
}
private void ApplyHeightmap(PaintContext sampleContext, PaintContext targetContext, BrushTransform targetXform,
Terrain targetTerrain, Texture brushTexture, float brushStrength)
{
Material paintMat = GetPaintMaterial();
Vector4 brushParams = new Vector4(brushStrength, cloneToolProperties.m_StampingOffsetFromClone * 0.5f, targetTerrain.terrainData.size.y, 0f);
paintMat.SetTexture("_BrushTex", brushTexture);
paintMat.SetVector("_BrushParams", brushParams);
paintMat.SetTexture("_CloneTex", sampleContext.sourceRenderTexture);
paintMat.SetVector("_SampleUVScaleOffset", ComputeSampleUVScaleOffset(sampleContext, targetContext));
var brushMask = RTUtils.GetTempHandle(sampleContext.sourceRenderTexture.width, sampleContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, sampleContext.sourceRenderTexture, brushMask, paintMat);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(targetContext, targetXform, paintMat);
Graphics.Blit(targetContext.sourceRenderTexture, targetContext.destinationRenderTexture, paintMat, (int)ShaderPasses.CloneHeightmap);
RTUtils.Release(brushMask);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
Vector4 brushParams = new Vector4(editContext.brushStrength, 0.0f, m_FeatureSize, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Flatten Slope Height");
return(false);
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
Vector4 smoothWeights = new Vector4(
Mathf.Clamp01(1.0f - Mathf.Abs(m_direction)), // centered
Mathf.Clamp01(-m_direction), // min
Mathf.Clamp01(m_direction), // max
0.0f); // unused
mat.SetVector("_SmoothWeights", smoothWeights);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.SmoothHeights);
}
private void ApplyBrushInternal(PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform, Terrain terrain, bool negate)
{
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float height = m_StampHeightTerrainSpace / terrain.terrainData.size.y;
if (negate)
{
height = -height;
}
Vector4 brushParams = new Vector4(brushStrength, 0.0f, height, m_MaxBlendAdd);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.StampHeight);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintSurfaceMask(terrain, brushXform.GetBrushXYBounds());
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float brushStrength = Event.current.shift ? editContext.brushStrength : -editContext.brushStrength;
Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintSurfaceMask);
TerrainPaintUtility.EndPaintSurfaceMask(paintContext, "Terrain Paint - Paint Surface Mask");
return(true);
}
private void ApplyHeightmap(PaintContext sampleContext, PaintContext targetContext, BrushTransform targetXform,
Terrain targetTerrain, Texture brushTexture, float brushStrength)
{
Material paintMat = GetPaintMaterial();
Vector4 brushParams = new Vector4(brushStrength, cloneToolProperties.m_StampingOffsetFromClone * 0.5f, targetTerrain.terrainData.size.y, 0f);
paintMat.SetTexture("_BrushTex", brushTexture);
paintMat.SetVector("_BrushParams", brushParams);
paintMat.SetTexture("_CloneTex", sampleContext.sourceRenderTexture);
FilterContext fc = new FilterContext(targetTerrain, commonUI.raycastHitUnderCursor.point, commonUI.brushSize, commonUI.brushRotation);
fc.renderTextureCollection.GatherRenderTextures(targetContext.sourceRenderTexture.width, targetContext.sourceRenderTexture.height);
RenderTexture filterMaskRT = commonUI.GetBrushMask(fc, targetContext.sourceRenderTexture);
paintMat.SetTexture("_FilterTex", filterMaskRT);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(targetContext, targetXform, paintMat);
Graphics.Blit(targetContext.sourceRenderTexture, targetContext.destinationRenderTexture, paintMat, (int)ShaderPasses.CloneHeightmap);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Material mat = GetPaintMaterial();
// apply brush
Vector4 brushParams = new Vector4(
editContext.brushStrength,
m_ErosionStrength,
m_MixStrength,
0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Ridge Erode");
return(false);
}