public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
commonUI.OnPaint(terrain, editContext);
if (commonUI.allowPaint)
{
Texture brushTexture = editContext.brushTexture;
using (IBrushRenderUnderCursor brushRender = new BrushRenderUIGroupUnderCursor(commonUI, "Twist", brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
{
float finalTwistAmount = m_TwistAmount * -0.001f; //scale to a reasonable value and negate so default mode is clockwise
if (Event.current.shift)
{
finalTwistAmount *= -1.0f;
}
Material mat = GetPaintMaterial();
Vector4 brushParams = new Vector4(commonUI.brushStrength, 0.0f, finalTwistAmount, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
//twist splat map
if (m_AffectMaterials)
{
for (int i = 0; i < terrain.terrainData.terrainLayers.Length; i++)
{
TerrainLayer layer = terrain.terrainData.terrainLayers[i];
PaintContext paintContext = brushRender.AcquireTexture(true, brushXform.GetBrushXYBounds(), layer);
var brushMask = RTUtils.GetTempHandle(paintContext.sourceRenderTexture.width, paintContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, paintContext.sourceRenderTexture, brushMask, mat);
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
brushRender.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
brushRender.RenderBrush(paintContext, mat, 0);
brushRender.Release(paintContext);
RTUtils.Release(brushMask);
}
}
//twist height map
if (m_AffectHeight)
{
PaintContext paintContext = brushRender.AcquireHeightmap(true, brushXform.GetBrushXYBounds(), 1);
var brushMask = RTUtils.GetTempHandle(paintContext.sourceRenderTexture.width, paintContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, paintContext.sourceRenderTexture, brushMask, mat);
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
ApplyBrushInternal(brushRender, paintContext, commonUI.brushStrength, finalTwistAmount, brushTexture, brushXform);
brushRender.Release(paintContext);
RTUtils.Release(brushMask);
}
}
}
}
return(false);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
#if UNITY_2019_1_OR_NEWER
if (m_EyedropperSelected && m_LayerList != null)
{
Texture2D[] splatmaps = terrain.terrainData.alphamapTextures;
int splatOffset = 0;
foreach (Texture2D splatmap in splatmaps)
{
Color pixel = splatmap.GetPixelBilinear(editContext.uv.x, editContext.uv.y);
if (pixel.r > .5f)
{
SelectEyedroppedLayer(terrain, splatOffset);
break;
}
else if (pixel.g > .5f)
{
SelectEyedroppedLayer(terrain, 1 + splatOffset);
break;
}
else if (pixel.b > .5f)
{
SelectEyedroppedLayer(terrain, 2 + splatOffset);
break;
}
else if (pixel.a > .5f)
{
SelectEyedroppedLayer(terrain, 3 + splatOffset);
break;
}
splatOffset += 4;
}
return(true);
}
#endif
commonUI.OnPaint(terrain, editContext);
if (commonUI.allowPaint)
{
Texture brushTexture = editContext.brushTexture;
using (IBrushRenderUnderCursor brushRender = new BrushRenderUIGroupUnderCursor(commonUI, "PaintTextureTool", brushTexture))
{
if (brushRender.CalculateBrushTransform(out BrushTransform brushTransform))
{
Rect brushRect = brushTransform.GetBrushXYBounds();
PaintContext paintContext = brushRender.AcquireTexture(true, brushRect, m_SelectedTerrainLayer);
if (paintContext != null)
{
PaintContext heightContext = brushRender.AcquireHeightmap(false, brushRect);
// Evaluate the brush mask filter stack
Material mat = GetPaintMaterial();
var brushMask = RTUtils.GetTempHandle(heightContext.sourceRenderTexture.width, heightContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, heightContext.sourceRenderTexture, brushMask, mat);
// apply brush
float targetAlpha = m_TargetStrength;
float s = commonUI.InvertStrength ? -commonUI.brushStrength : commonUI.brushStrength;
Vector4 brushParams = new Vector4(s, targetAlpha, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
brushRender.SetupTerrainToolMaterialProperties(paintContext, brushTransform, mat);
brushRender.RenderBrush(paintContext, mat, 0);
RTUtils.Release(brushMask);
}
}
}
}
return(true);
}