private void PaintHeight(float hardness)
{
GameObject terrain = m_Editor.terrain.gameObject;
Vector2 size = UEditorTools.GetSizeOfMesh(m_Editor.terrain.mesh, terrain.transform);
float multiple;
if (size.x > size.y)
{
multiple = size.y;
}
else
{
multiple = size.x;
}
Event e = Event.current;
Ray ray = HandleUtility.GUIPointToWorldRay(e.mousePosition);
RaycastHit[] hits = Physics.RaycastAll(ray);
float bs = m_BrushSize;
int fallOff = m_FallOff;
foreach (RaycastHit hit in hits)
{
if (hit.collider.gameObject == terrain)
{
Vector3 relativePoint = terrain.transform.InverseTransformPoint(hit.point);
DeformMesh(m_Editor.terrain.mesh, relativePoint, (float)(hardness * 30 * Time.deltaTime * multiple), bs, fallOff);
}
}
}
void Paint(RaycastHit hit)
{
int texIndex = m_SelectedTex;
float hardness = m_Hardness;
int passIndex = m_SelectedPass;
float brushSize = m_BrushSize;
USubMesh sm = subMesh;
UPass pass = sm[passIndex];
int texW = pass.mixTex.width;
int texH = pass.mixTex.height;
int centerX = Mathf.FloorToInt(hit.textureCoord.x * texW);
int centerY = Mathf.FloorToInt(hit.textureCoord.y * texH);
Vector2 bounds = UEditorTools.GetSizeOfMesh(sm.mesh, m_Editor.terrain.transform);
int pixelSize = 0;
if (texW > texH)
{
pixelSize = (int)((brushSize / bounds.x) * texW);
}
else
{
pixelSize = (int)((brushSize / bounds.y) * texH);
}
int x = Mathf.Clamp(centerX - pixelSize, 0, texW - 1);
int y = Mathf.Clamp(centerY - pixelSize, 0, texH - 1);
int width = Mathf.Clamp(2 * pixelSize, 0, texW - x);
int height = Mathf.Clamp(2 * pixelSize, 0, texH - y);
List <Color[]> srcPixels = new List <Color[]>();
sm.passes.ToList().ForEach(p => srcPixels.Add(p.mixTex.GetPixels(x, y, width, height, 0)));
for (int i = 0, max = srcPixels.Count; i < max; i++)
{
Color[] pixels = srcPixels[i];
for (int h = 0; h < height; h++)
{
for (int w = 0; w < width; w++)
{
Color targetColor;
if (i == passIndex)
{
targetColor = GetColor(texIndex);
}
else
{
targetColor = Color.clear;
}
int ix = (int)(w * 64 / width);
int iy = (int)(h * 64 / height);
int index = (h * width) + w;
float blendFactor = m_Brush.GetStrengthInt(ix, iy) * hardness * 0.1f;
pixels[index] = Color.Lerp(pixels[index], targetColor, blendFactor);
}
}
sm[i].Paint(x, y, width, height, pixels);
}
}
void GetTexSize(ref int width, ref int height)
{
Vector2 size = UEditorTools.GetSizeOfMesh(subMesh.mesh, m_Editor.terrain.transform);
if (size.x < size.y)
{
width = (int)(maxSize * size.x / size.y);
height = maxSize;
}
else if (size.x >= size.y)
{
height = (int)(maxSize * size.y / size.x);
width = maxSize;
}
}