public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
{
commonUI.OnSceneGUI2D(terrain, editContext);
if (!editContext.hitValidTerrain && !commonUI.isInUse)
{
return;
}
// update brush UI group
commonUI.OnSceneGUI(terrain, editContext);
if (Event.current.type != EventType.Repaint)
{
return;
}
if (commonUI.isRaycastHitUnderCursorValid)
{
using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "PaintHoles", editContext.brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
PaintContext paintContext = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(paintContext.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(paintContext, texelCtx, brushXform, previewMaterial);
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 0);
texelCtx.Cleanup();
}
}
}
}
public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
{
commonUI.OnSceneGUI2D(terrain, editContext);
if (!editContext.hitValidTerrain && !commonUI.isInUse)
{
return;
}
commonUI.OnSceneGUI(terrain, editContext);
Event evt = Event.current;
if (evt.control && (evt.type == EventType.ScrollWheel))
{
const float k_mouseWheelToHeightRatio = -0.004f;
stampToolProperties.stampHeight += Event.current.delta.y * k_mouseWheelToHeightRatio * editContext.raycastHit.distance;
evt.Use();
editContext.Repaint();
SaveSetting();
}
// We're only doing painting operations, early out if it's not a repaint
if (evt.type != EventType.Repaint)
{
return;
}
if (commonUI.isRaycastHitUnderCursorValid)
{
Texture brushTexture = editContext.brushTexture;
using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "Stamp", brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
PaintContext paintContext = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(paintContext.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(paintContext, texelCtx, brushXform, previewMaterial);
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 0);
// draw result preview
{
ApplyBrushInternal(brushRender, paintContext, commonUI.brushStrength, brushTexture, brushXform, terrain);
// restore old render target
RenderTexture.active = paintContext.oldRenderTexture;
previewMaterial.SetTexture("_HeightmapOrig", paintContext.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, TerrainBrushPreviewMode.DestinationRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 1);
}
TerrainPaintUtility.ReleaseContextResources(paintContext);
texelCtx.Cleanup();
}
}
}
}
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 brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "ThermalErosion", editContext.brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
PaintContext ctx = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
var texelCtx = Utility.CollectTexelValidity(ctx.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(ctx, texelCtx, brushXform, previewMaterial);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 0);
texelCtx.Cleanup();
}
}
}
public override void OnRenderBrushPreview(Terrain terrain, IOnSceneGUI editContext)
{
// We're only doing painting operations, early out if it's not a repaint
if (Event.current.type != EventType.Repaint)
{
return;
}
if (editContext.hitValidTerrain)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.raycastHit.textureCoord, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Material material = TerrainPaintUtilityEditor.GetDefaultBrushPreviewMaterial();
TerrainPaintUtilityEditor.DrawBrushPreview(
paintContext, TerrainBrushPreviewMode.SourceRenderTexture, editContext.brushTexture, brushXform, material, 0);
// draw result preview
{
ApplyBrushInternal(paintContext, editContext.brushStrength, editContext.brushTexture, brushXform);
// restore old render target
RenderTexture.active = paintContext.oldRenderTexture;
material.SetTexture("_HeightmapOrig", paintContext.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(
paintContext, TerrainBrushPreviewMode.DestinationRenderTexture, editContext.brushTexture, brushXform, material, 1);
}
TerrainPaintUtility.ReleaseContextResources(paintContext);
}
}
private void RemoveTrees(Terrain terrain, IOnPaint editContext, bool clearSelectedOnly)
{
PaintTreesDetailsContext ctx = PaintTreesDetailsContext.Create(terrain, editContext.uv);
for (int i = 0; i < ctx.neighborTerrains.Length; ++i)
{
Terrain ctxTerrain = ctx.neighborTerrains[i];
if (ctxTerrain != null)
{
Vector2 ctxUV = ctx.neighborUvs[i];
float radius = 0.5f * brushSize / ctxTerrain.terrainData.size.x;
int treePrototype = kInvalidTree;
if (clearSelectedOnly && selectedTree != kInvalidTree)
{
treePrototype = PaintTreesUtils.FindTreePrototype(ctxTerrain, m_TargetTerrain, selectedTree);
}
if (!clearSelectedOnly || treePrototype != kInvalidTree)
{
TerrainPaintUtilityEditor.UpdateTerrainDataUndo(ctxTerrain.terrainData, "Terrain - Remove Trees");
ctxTerrain.RemoveTrees(ctxUV, radius, treePrototype);
}
}
}
}
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;
}
if (commonUI.isRaycastHitUnderCursorValid)
{
Texture brushTexture = editContext.brushTexture;
using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "Twist", editContext.brushTexture))
{
//draw brush circle
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
PaintContext ctx = brushRender.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);
// draw result preview
{
float finalTwistAmount = m_TwistAmount * -0.002f; //scale to a reasonable value and negate so default mode is clockwise
if (Event.current.shift)
{
finalTwistAmount *= -1.0f;
}
ApplyBrushInternal(brushRender, ctx, commonUI.brushStrength, finalTwistAmount, brushTexture, brushXform);
// 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();
}
}
}
}
public override void OnRenderBrushPreview(Terrain terrain, IOnSceneGUI editContext)
{
if (m_MouseOnPatchIndex == -1 && editContext.hitValidTerrain && Event.current.type == EventType.Repaint)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.raycastHit.textureCoord, editContext.brushSize, 0.0f);
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture, editContext.brushTexture, brushXform, TerrainPaintUtilityEditor.GetDefaultBrushPreviewMaterial(), 0);
TerrainPaintUtility.ReleaseContextResources(ctx);
}
}
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);
}
}
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;
}
if (commonUI.isRaycastHitUnderCursorValid)
{
using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "PaintHeight", editContext.brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
PaintContext paintContext = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(paintContext.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(paintContext, texelCtx, brushXform, previewMaterial);
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 0);
// draw result preview
{
float s = Event.current.control ? -commonUI.brushStrength : commonUI.brushStrength;
ApplyBrushInternal(terrain, brushRender, paintContext, s, editContext.brushTexture, brushXform);
// restore old render target
RenderTexture.active = paintContext.oldRenderTexture;
previewMaterial.SetTexture("_HeightmapOrig", paintContext.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, TerrainBrushPreviewMode.DestinationRenderTexture,
editContext.brushTexture, brushXform, previewMaterial, 1);
texelCtx.Cleanup();
}
}
}
}
}
private void DrawBrushPreviews(Terrain terrain, IOnSceneGUI editContext)
{
Vector2 sampleUV;
BrushTransform sampleXform;
PaintContext sampleContext = null;
Material previewMat = Utility.GetDefaultPreviewMaterial();
// draw sample location brush and create context data to be used when drawing target brush previews
if (m_SampleLocation.terrain != null)
{
sampleUV = TerrainUVFromBrushLocation(m_SampleLocation.terrain, m_SampleLocation.pos);
sampleXform = TerrainPaintUtility.CalculateBrushTransform(m_SampleLocation.terrain, sampleUV, commonUI.brushSize, commonUI.brushRotation);
sampleContext = TerrainPaintUtility.BeginPaintHeightmap(m_SampleLocation.terrain, sampleXform.GetBrushXYBounds());
var texelCtx = Utility.CollectTexelValidity(sampleContext.originTerrain, sampleXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(sampleContext, texelCtx, sampleXform, previewMat);
TerrainPaintUtilityEditor.DrawBrushPreview(sampleContext, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, sampleXform, previewMat, 0);
texelCtx.Cleanup();
}
// draw brush preview and mesh preview for current mouse position
if (commonUI.isRaycastHitUnderCursorValid)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, commonUI.raycastHitUnderCursor.textureCoord, commonUI.brushSize, commonUI.brushRotation);
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
var texelCtx = Utility.CollectTexelValidity(ctx.originTerrain, brushXform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(ctx, texelCtx, brushXform, previewMat);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture,
editContext.brushTexture, brushXform, previewMat, 0);
if (sampleContext != null && cloneToolProperties.m_PaintHeightmap)
{
ApplyHeightmap(sampleContext, ctx, brushXform, terrain, editContext.brushTexture, commonUI.brushStrength);
RenderTexture.active = ctx.oldRenderTexture;
previewMat.SetTexture("_HeightmapOrig", ctx.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.DestinationRenderTexture,
editContext.brushTexture, brushXform, previewMat, 1);
}
// Restores RenderTexture.active
ctx.Cleanup();
texelCtx.Cleanup();
}
// Restores RenderTexture.active
sampleContext?.Cleanup();
}
public override void OnRenderBrushPreview(Terrain terrain, IOnSceneGUI editContext)
{
// We're only doing painting operations, early out if it's not a repaint
if (Event.current.type != EventType.Repaint)
{
return;
}
if (editContext.hitValidTerrain)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.raycastHit.textureCoord, editContext.brushSize, 0.0f);
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture, editContext.brushTexture, brushXform, TerrainPaintUtilityEditor.GetDefaultBrushPreviewMaterial(), 0);
TerrainPaintUtility.ReleaseContextResources(ctx);
}
}
public void RenderBrushPreview(PaintContext paintContext, TerrainBrushPreviewMode previewTexture, BrushTransform brushTransform, Material material, int pass)
{
TerrainPaintUtilityEditor.DrawBrushPreview(paintContext, previewTexture, brushTexture, brushTransform, material, pass);
}
private void PlaceTrees(Terrain terrain, IOnPaint editContext)
{
if (m_TargetTerrain == null ||
selectedTree == kInvalidTree ||
selectedTree >= m_TargetTerrain.terrainData.treePrototypes.Length)
{
return;
}
PaintTreesDetailsContext ctx = PaintTreesDetailsContext.Create(terrain, editContext.uv);
int placedTreeCount = 0;
int treePrototype = PaintTreesUtils.FindTreePrototype(terrain, m_TargetTerrain, selectedTree);
if (treePrototype == kInvalidTree)
{
treePrototype = PaintTreesUtils.CopyTreePrototype(terrain, m_TargetTerrain, selectedTree);
}
if (PaintTreesUtils.ValidateTreePrototype(terrain, treePrototype))
{
// When painting single tree
// And just clicking we always place it, so you can do overlapping trees
Vector3 position = new Vector3(editContext.uv.x, 0, editContext.uv.y);
bool checkTreeDistance = Event.current.type == EventType.MouseDrag || brushSize > 1;
if (!checkTreeDistance || TerrainInspectorUtil.CheckTreeDistance(terrain.terrainData, position, treePrototype, spacing))
{
TerrainPaintUtilityEditor.UpdateTerrainDataUndo(terrain.terrainData, "Terrain - Place Trees");
var instanceHeight = GetTreeHeight();
PaintTreesUtils.PlaceTree(terrain, treePrototype, position, GetTreeColor(), instanceHeight, GetTreeWidth(instanceHeight), GetTreeRotation());
++placedTreeCount;
}
}
for (int i = 0; i < ctx.neighborTerrains.Length; ++i)
{
Terrain ctxTerrain = ctx.neighborTerrains[i];
if (ctxTerrain != null)
{
Vector2 ctxUV = ctx.neighborUvs[i];
treePrototype = PaintTreesUtils.FindTreePrototype(ctxTerrain, m_TargetTerrain, selectedTree);
if (treePrototype == kInvalidTree)
{
treePrototype = PaintTreesUtils.CopyTreePrototype(ctxTerrain, m_TargetTerrain, selectedTree);
}
if (PaintTreesUtils.ValidateTreePrototype(ctxTerrain, treePrototype))
{
Vector3 size = TerrainInspectorUtil.GetPrototypeExtent(ctxTerrain.terrainData, treePrototype);
size.y = 0;
float treeCountOneAxis = brushSize / (size.magnitude * spacing * .5f);
int treeCount = (int)((treeCountOneAxis * treeCountOneAxis) * .5f);
treeCount = Mathf.Clamp(treeCount, 0, 100);
// Plant a bunch of trees
for (int j = ctxTerrain == terrain ? 1 : 0; j < treeCount && placedTreeCount < treeCount; ++j)
{
Vector2 randomOffset = 0.5f * Random.insideUnitCircle;
randomOffset.x *= brushSize / ctxTerrain.terrainData.size.x;
randomOffset.y *= brushSize / ctxTerrain.terrainData.size.z;
Vector3 position = new Vector3(ctxUV.x + randomOffset.x, 0, ctxUV.y + randomOffset.y);
if (position.x >= 0 && position.x <= 1 && position.z >= 0 && position.z <= 1 &&
TerrainInspectorUtil.CheckTreeDistance(ctxTerrain.terrainData, position, treePrototype, spacing * .5f))
{
TerrainPaintUtilityEditor.UpdateTerrainDataUndo(ctxTerrain.terrainData, "Terrain - Place Trees");
var instanceHeight = GetTreeHeight();
PaintTreesUtils.PlaceTree(ctxTerrain, treePrototype, position, GetTreeColor(), instanceHeight, GetTreeWidth(instanceHeight), GetTreeRotation());
++placedTreeCount;
}
}
}
}
}
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (m_TargetTerrain == null ||
selectedDetail == kInvalidDetail ||
selectedDetail >= m_TargetTerrain.terrainData.detailPrototypes.Length)
{
return(false);
}
Texture2D brush = editContext.brushTexture as Texture2D;
if (brush == null)
{
Debug.LogError("Brush texture is not a Texture2D.");
return(false);
}
if (m_BrushRep == null)
{
m_BrushRep = new BrushRep();
}
PaintTreesDetailsContext ctx = PaintTreesDetailsContext.Create(terrain, editContext.uv);
for (int t = 0; t < ctx.terrains.Length; ++t)
{
Terrain ctxTerrain = ctx.terrains[t];
if (ctxTerrain != null)
{
int detailPrototype = PaintDetailsUtils.FindDetailPrototype(ctxTerrain, m_TargetTerrain, selectedDetail);
if (detailPrototype == kInvalidDetail)
{
detailPrototype = PaintDetailsUtils.CopyDetailPrototype(ctxTerrain, m_TargetTerrain, selectedDetail);
}
TerrainData terrainData = ctxTerrain.terrainData;
TerrainPaintUtilityEditor.UpdateTerrainDataUndo(terrainData, "Terrain - Detail Edit");
int size = (int)Mathf.Max(1.0f, editContext.brushSize * ((float)terrainData.detailResolution / terrainData.size.x));
m_BrushRep.CreateFromBrush(brush, size);
Vector2 ctxUV = ctx.uvs[t];
int xCenter = Mathf.FloorToInt(ctxUV.x * terrainData.detailWidth);
int yCenter = Mathf.FloorToInt(ctxUV.y * terrainData.detailHeight);
int intRadius = Mathf.RoundToInt(size) / 2;
int intFraction = Mathf.RoundToInt(size) % 2;
int xmin = xCenter - intRadius;
int ymin = yCenter - intRadius;
int xmax = xCenter + intRadius + intFraction;
int ymax = yCenter + intRadius + intFraction;
if (xmin >= terrainData.detailWidth || ymin >= terrainData.detailHeight || xmax <= 0 || ymax <= 0)
{
continue;
}
xmin = Mathf.Clamp(xmin, 0, terrainData.detailWidth - 1);
ymin = Mathf.Clamp(ymin, 0, terrainData.detailHeight - 1);
xmax = Mathf.Clamp(xmax, 0, terrainData.detailWidth);
ymax = Mathf.Clamp(ymax, 0, terrainData.detailHeight);
int width = xmax - xmin;
int height = ymax - ymin;
float targetStrength = m_DetailsStrength;
if (Event.current.shift || Event.current.control)
{
targetStrength = -targetStrength;
}
int[] layers = { detailPrototype };
if (targetStrength < 0.0F && !Event.current.control)
{
layers = terrainData.GetSupportedLayers(xmin, ymin, width, height);
}
for (int i = 0; i < layers.Length; i++)
{
int[,] alphamap = terrainData.GetDetailLayer(xmin, ymin, width, height, layers[i]);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int xBrushOffset = (xmin + x) - (xCenter - intRadius + intFraction);
int yBrushOffset = (ymin + y) - (yCenter - intRadius + intFraction);
float opa = detailOpacity * m_BrushRep.GetStrengthInt(xBrushOffset, yBrushOffset);
float targetValue = Mathf.Lerp(alphamap[y, x], targetStrength * terrainData.maxDetailScatterPerRes, opa);
alphamap[y, x] = Mathf.Min(Mathf.RoundToInt(targetValue - .5f + Random.value), terrainData.maxDetailScatterPerRes);
}
}
terrainData.SetDetailLayer(xmin, ymin, layers[i], alphamap);
}
}
}
return(false);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (m_TargetTerrain == null ||
selectedDetail == kInvalidDetail ||
selectedDetail >= m_TargetTerrain.terrainData.detailPrototypes.Length)
{
return(false);
}
Texture2D brush = editContext.brushTexture as Texture2D;
if (brush == null)
{
Debug.LogError("Brush texture is not a Texture2D.");
return(false);
}
if (m_BrushRep == null)
{
m_BrushRep = new DetailBrushRepresentation();
}
PaintTreesDetailsContext ctx = PaintTreesDetailsContext.Create(terrain, editContext.uv);
for (int t = 0; t < ctx.neighborTerrains.Length; ++t)
{
Terrain ctxTerrain = ctx.neighborTerrains[t];
if (ctxTerrain != null)
{
int detailPrototype = PaintDetailsToolUtility.FindDetailPrototype(ctxTerrain, m_TargetTerrain, selectedDetail);
if (detailPrototype == kInvalidDetail)
{
detailPrototype = PaintDetailsToolUtility.CopyDetailPrototype(ctxTerrain, m_TargetTerrain, selectedDetail);
}
TerrainData terrainData = ctxTerrain.terrainData;
TerrainPaintUtilityEditor.UpdateTerrainDataUndo(terrainData, "Terrain - Detail Edit");
int size = (int)Mathf.Max(1.0f, editContext.brushSize * ((float)terrainData.detailResolution / terrainData.size.x));
m_BrushRep.Update(brush, size);
float targetStrength = m_DetailsStrength;
if (Event.current.shift || Event.current.control)
{
targetStrength = -targetStrength;
}
DetailBrushBounds brushBounds = new DetailBrushBounds(terrainData, ctx, size, t);
int[] layers = { detailPrototype };
if (targetStrength < 0.0F && !Event.current.control)
{
layers = terrainData.GetSupportedLayers(brushBounds.min, brushBounds.bounds.size);
}
for (int i = 0; i < layers.Length; i++)
{
int[,] alphamap = terrainData.GetDetailLayer(brushBounds.min, brushBounds.bounds.size, layers[i]);
for (int y = 0; y < brushBounds.bounds.height; y++)
{
for (int x = 0; x < brushBounds.bounds.width; x++)
{
Vector2Int brushOffset = brushBounds.GetBrushOffset(x, y);
float opa = detailOpacity * m_BrushRep.GetStrength(brushOffset.x, brushOffset.y);
float targetValue = Mathf.Lerp(alphamap[y, x], targetStrength * terrainData.maxDetailScatterPerRes, opa);
alphamap[y, x] = Mathf.Min(Mathf.RoundToInt(targetValue - .5f + Random.value), terrainData.maxDetailScatterPerRes);
}
}
terrainData.SetDetailLayer(brushBounds.min, layers[i], alphamap);
}
}
}
return(false);
}
public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
{
commonUI.OnSceneGUI2D(terrain, editContext);
#if UNITY_2019_1_OR_NEWER
// Don't paint if eyedropper is selected
if (m_EyedropperSelected)
{
EditorGUIUtility.AddCursorRect(new Rect(0, 0, Screen.width, Screen.height), MouseCursor.CustomCursor);
editContext.Repaint();
return;
}
#endif
// We're only doing painting operations, early out if it's not a repaint
if (!editContext.hitValidTerrain && !commonUI.isInUse)
{
return;
}
// update brush UI group
commonUI.OnSceneGUI(terrain, editContext);
// Don't render preview if this isn't a repaint. losing performance if we do
if (Event.current.type != EventType.Repaint)
{
return;
}
Texture brushTexture = editContext.brushTexture;
using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "PaintTextureTool", brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushTransform)) //cute.
{
RenderTexture tmpRT = RenderTexture.active;
Rect brushBounds = brushTransform.GetBrushXYBounds();
PaintContext heightmapContext = brushRender.AcquireHeightmap(false, brushBounds, 1);
Material brushMaterial = GetBrushPreviewMaterial();
brushMaterial.SetFloat("_BrushStrength", commonUI.brushStrength);
var defaultPreviewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(heightmapContext.originTerrain, brushTransform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(heightmapContext, texelCtx, brushTransform, defaultPreviewMaterial);
if (commonUI.brushMaskFilterStack.filters.Count > 0)
{
// Evaluate the brush mask filter stack
var brushMask = RTUtils.GetTempHandle(heightmapContext.sourceRenderTexture.width, heightmapContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
commonUI.GetBrushMask(heightmapContext.sourceRenderTexture, brushMask);
RenderTexture.active = tmpRT;
Utility.SetupMaterialForPaintingWithTexelValidityContext(heightmapContext, texelCtx, brushTransform, brushMaterial);
brushMaterial.SetTexture("_FilterTex", brushMask);
TerrainPaintUtilityEditor.DrawBrushPreview(heightmapContext, TerrainBrushPreviewMode.SourceRenderTexture, editContext.brushTexture, brushTransform, brushMaterial, 0);
RTUtils.Release(brushMask);
}
brushRender.RenderBrushPreview(heightmapContext, TerrainBrushPreviewMode.SourceRenderTexture, brushTransform, defaultPreviewMaterial, 0);
texelCtx.Cleanup();
}
}
}
public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
{
Init();
// m_rtCollection.OnSceneGUI( EditorWindow.GetWindow<SceneView>().position.height / 4 );
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 && !m_editTransform && !debugOrtho)
{
return;
}
// update brush UI group
commonUI.OnSceneGUI(terrain, editContext);
bool justPressedEditKey = m_editTransform && !m_prevEditTransform;
bool justReleaseEditKey = m_prevEditTransform && !m_editTransform;
m_prevEditTransform = m_editTransform;
if (justPressedEditKey)
{
(commonUI as MeshBrushUIGroup).LockTerrainUnderCursor(true);
m_baseHandlePos = commonUI.raycastHitUnderCursor.point;
m_handleHeightOffsetWS = 0;
}
else if (justReleaseEditKey)
{
(commonUI as MeshBrushUIGroup).UnlockTerrainUnderCursor();
m_handleHeightOffsetWS = 0;
}
// don't render mesh previews, etc. if the mesh field has not been populated yet
if (activeMesh == null)
{
return;
}
// dont render preview if this isnt a repaint. losing performance if we do
if (Event.current.type == EventType.Repaint)
{
Terrain currTerrain = commonUI.terrainUnderCursor;
Vector2 uv = commonUI.raycastHitUnderCursor.textureCoord;
float brushSize = commonUI.brushSize;
float brushRotation = commonUI.brushRotation;
if (commonUI.isRaycastHitUnderCursorValid)
{
BrushTransform brushTransform = TerrainPaintUtility.CalculateBrushTransform(currTerrain, uv, brushSize, brushRotation);
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap(commonUI.terrainUnderCursor, brushTransform.GetBrushXYBounds(), 1);
Material previewMaterial = Utility.GetDefaultPreviewMaterial();
var texelCtx = Utility.CollectTexelValidity(ctx.originTerrain, brushTransform.GetBrushXYBounds());
Utility.SetupMaterialForPaintingWithTexelValidityContext(ctx, texelCtx, brushTransform, previewMaterial);
// don't draw the brush mask preview
// but draw the resulting mesh stamp preview
{
ApplyBrushInternal(terrain, ctx, brushTransform);
RenderTexture.active = ctx.oldRenderTexture;
previewMaterial.SetTexture("_HeightmapOrig", ctx.sourceRenderTexture);
TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.DestinationRenderTexture,
editContext.brushTexture, brushTransform, previewMaterial, 1);
TerrainPaintUtility.ReleaseContextResources(ctx);
m_rtCollection.ReleaseRTHandles();
}
texelCtx.Cleanup();
}
}
if (m_editTransform)
{
EditorGUI.BeginChangeCheck();
{
Vector3 prevHandlePosWS = m_baseHandlePos + Vector3.up * m_handleHeightOffsetWS;
// draw transform handles
float handleSize = HandleUtility.GetHandleSize(prevHandlePosWS);
Quaternion brushRotation = Quaternion.AngleAxis(commonUI.brushRotation, Vector3.up);
Matrix4x4 brushRotMat = Matrix4x4.Rotate(brushRotation);
Matrix4x4 toolRotMat = Matrix4x4.Rotate(toolSettings.rotation);
Quaternion handleRot = MeshUtils.QuaternionFromMatrix(brushRotMat * toolRotMat);
Quaternion newRot = Handles.RotationHandle(handleRot, prevHandlePosWS);
toolSettings.rotation = MeshUtils.QuaternionFromMatrix(brushRotMat.inverse * Matrix4x4.Rotate(newRot));
toolSettings.scale = Handles.ScaleHandle(toolSettings.scale, prevHandlePosWS, handleRot, handleSize * 1.5f);
Vector3 currHandlePosWS = Handles.Slider(prevHandlePosWS, Vector3.up, handleSize, Handles.ArrowHandleCap, 1f);
float deltaHeight = (currHandlePosWS.y - prevHandlePosWS.y);
m_handleHeightOffsetWS += deltaHeight;
toolSettings.stampHeight += deltaHeight;
}
if (EditorGUI.EndChangeCheck())
{
SaveSettings();
editContext.Repaint();
}
}
}