Unity/C# - 更改绘制地形的笔刷大小

Unity/C# - Change size of brush for painting terrain

我正在为统一的运行时地形编辑器编写代码,但卡住了。 起初我只想用纹理绘制地形。我找到了这段代码并且运行良好:

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方式作画sizes/thickness。我有另一个脚本,名为 Terrainmodifier,我用它来升高和降低地形。我有这条线用于提高:

脚本:地形修改器

    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);
}

所以我想我可以用这个作为辅助并转移它。所以我用 GetAlphamaps() 而不是 GetHeights() 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sb能帮我找出错误。如何更改 "brush" 的大小?

编辑:我在代码中写了注释以查看 transfered/related 行。

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

[..]

        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);