Unity/C#-更改画笔的大小以绘制地形



我正在为unity编写一个运行时地形编辑器,但遇到了问题。起初,我只想用文字描绘地形。我找到了这个代码,它运行良好:

脚本:TerrainPainter

void Paint(Vector3 point)
{
mapX = (int)(((point.x - terrainPosition.x) / terrainData.size.x) * heightmapWidth);
mapY = (int)(((point.z - terrainPosition.z) / terrainData.size.z) * heigtmapHeight);
splatmapData[mapY, mapX, 0] = element[0, 0, 0] = 0;
splatmapData[mapY, mapX, 1] = element[0, 0, 1] = 1;
terrain.terrainData.SetAlphamaps(mapX, mapY, element);
}

但现在我想用不同的尺寸/厚度来画画。我有另一个脚本,名为Terrainmodifier,我用它来升高和降低地形。我有以下几行要筹集:

脚本:Terrainmodifier

public void RaiseTerrain(Terrain terrain, Vector3 location, float effectIncrement)
{
int offset = areaOfEffectSize / 2;
//--1--
Vector3 tempCoord = (location - terrain.GetPosition());
Vector3 coord;
coord = new Vector3(
(tempCoord.x / GetTerrainSize().x),
(tempCoord.y / GetTerrainSize().y),
(tempCoord.z / GetTerrainSize().z)
);
Vector3 locationInTerrain = new Vector3(coord.x * terrainHeightMapWidth, 0, coord.z * terrainHeightMapHeight);
// End --1--
// --2--
int terX = (int)locationInTerrain.x - offset;
int terZ = (int)locationInTerrain.z - offset;
// End --2--
// --3--
float[,] heights = targetTerrainData.GetHeights(terX, terZ, areaOfEffectSize, areaOfEffectSize);
for (int xx = 0; xx < areaOfEffectSize; xx++)
{
for (int yy = 0; yy < areaOfEffectSize; yy++)
{
heights[xx, yy] += (effectIncrement * Time.smoothDeltaTime);
}
}
targetTerrainData.SetHeights(terX, terZ, heights);
}

所以我想我可以用它作为辅助并转移它。所以我使用了GetAlphamaps((而不是GetHeights(([/strong>,并添加了变量areaOfEffectSize

脚本:TerrainPainter

void Paint(Vector3 point)
{
// --1--
mapX = (int)(((point.x - terrainPosition.x) / terrainData.size.x) * heightmapWidth);
mapY = (int)(((point.z - terrainPosition.z) / terrainData.size.z) * heigtmapHeight);
// End --1--
// --2--
int terX = (int)mapX - (areaOfEffectSize / 2);
int terY = (int)mapY - (areaOfEffectSize / 2);
// End --2--
// --3--
splatmapData = terrainData.GetAlphamaps(terX, terY, areaOfEffectSize, areaOfEffectSize);
for(int xx = 0; xx < areaOfEffectSize; xx++)
{
for (int yy = 0; yy < areaOfEffectSize; yy++)
{
splatmapData[yy, xx, 1] = element[0, 0, 1] = 1;
}
}
terrain.terrainData.SetAlphamaps(terX, terY, element);
}

希望有人能帮我找出错误。如何更改"画笔"的大小?

编辑:我在代码中写了注释,以查看传输的/相关的行。

哦,伙计们,我犯了一个愚蠢的错误。通过将splatmapData传递到SetAlphamaps-中解决了这个问题-因此,解决方案是:

[..]

for (int xx = 0; xx < areaOfEffectSize; xx++)
{
for (int yy = 0; yy < areaOfEffectSize; yy++)
{
splatmapData[yy, xx, 0] = 0;
splatmapData[yy, xx, 1] = 1;
}
}
terrain.terrainData.SetAlphamaps(terX, terY, splatmapData);

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