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DefineClass.XSmoothHeightBrush = {
__parents = { "XEditorBrushTool" },
properties = {
editor = "number", slider = true, persisted_setting = true, auto_select_all = true,
{ id = "Strength", default = 50, scale = "%", min = 10, max = 100, step = 10 },
{ id = "RegardWalkables", name = "Limit to walkables", editor = "bool", default = false },
},
ToolSection = "Height",
ToolTitle = "Smooth height",
Description = {
"Removes jagged edges and softens terrain features."
},
ActionSortKey = "12",
ActionIcon = "CommonAssets/UI/Editor/Tools/Smooth.tga",
ActionShortcut = "S",
blurred_grid = false,
mask_grid = false,
}
function XSmoothHeightBrush:Init()
local w, h = terrain.HeightMapSize()
self.blurred_grid = NewComputeGrid(w, h, "F")
self.mask_grid = NewComputeGrid(w, h, "F")
self:InitBlurredGrid()
end
function XSmoothHeightBrush:Done()
editor.ClearOriginalHeightGrid()
self.blurred_grid:free()
self.mask_grid:free()
end
function XSmoothHeightBrush:InitBlurredGrid()
editor.StoreOriginalHeightGrid(false) -- false = don't use for GetTerrainCursor
editor.CopyFromOriginalHeight(self.blurred_grid)
local blur_size = MulDivRound(self:GetStrength(), self:GetSize(), guim * const.HeightTileSize * 3)
AsyncBlurGrid(self.blurred_grid, Max(blur_size, 1))
end
-- called via Msg when height is changed via this brush, or via undo
function XSmoothHeightBrush:UpdateBlurredGrid(bbox)
bbox = terrain.ClampBox(GrowBox(bbox, 512 * guim)) -- TODO: make updating the blurred grid in the changed area only not produce sharp changes at the edges
local grid_box = bbox / const.HeightTileSize
-- copy the changed area back into blurred grid, and blur only that area to update it
local height_part = editor.GetGrid("height", bbox)
self.blurred_grid:copyrect(height_part, grid_box - grid_box:min(), grid_box:min())
height_part:free()
local blur_size = MulDivRound(self:GetStrength(), self:GetSize(), guim * const.HeightTileSize * 3)
AsyncBlurGrid(self.blurred_grid, grid_box, Max(blur_size, 1)) -- update the blurred version of the terrain grid in the edited box
end
function OnMsg.EditorHeightChangedFinal(bbox)
local brush = XEditorGetCurrentTool()
if IsKindOf(brush, "XSmoothHeightBrush") then
brush:UpdateBlurredGrid(bbox)
end
end
function XSmoothHeightBrush:OnEditorSetProperty(prop_id, old_value, ged)
if prop_id == "Strength" or prop_id == "Size" then
self:InitBlurredGrid()
end
end
function XSmoothHeightBrush:StartDraw(pt)
XEditorUndo:BeginOp{ height = true , name = "Changed height" }
editor.StoreOriginalHeightGrid(false) -- false = don't use for GetTerrainCursor
self.mask_grid:clear()
end
function XSmoothHeightBrush:Draw(pt1, pt2)
local _, outer_radius = self:GetCursorRadius()
local bbox = editor.DrawMaskSegment(self.mask_grid, pt1, pt2, self:GetSize() / 4, self:GetSize(), "max", self:GetStrength() * 1.0 / 100.0)
editor.SetHeightWithMask(self.blurred_grid, self.mask_grid, bbox)
if self:GetRegardWalkables() then
editor.ClampHeightToWalkables(bbox)
end
Msg("EditorHeightChanged", false, bbox)
end
function XSmoothHeightBrush:EndDraw(pt1, pt2, invalid_box)
local bbox = editor.GetSegmentBoundingBox(pt1, pt2, self:GetSize(), self:IsCursorSquare())
Msg("EditorHeightChanged", true, bbox)
XEditorUndo:EndOp(nil, invalid_box)
end
function XSmoothHeightBrush:OnShortcut(shortcut, source, ...)
if XEditorBrushTool.OnShortcut(self, shortcut, source, ...) then
return "break"
end
local key = string.gsub(shortcut, "^Shift%-", "") -- ignore Shift, use it to decrease step size
local divisor = terminal.IsKeyPressed(const.vkShift) and 10 or 1
if key == "+" or key == "Numpad +" then
self:SetStrength(self:GetStrength() + 10)
return "break"
elseif key == "-" or key == "Numpad -" then
self:SetStrength(self:GetStrength() - 10)
return "break"
end
end
function XSmoothHeightBrush:GetCursorHeight()
return self:GetStrength() / 3 * guim
end
function XSmoothHeightBrush:GetCursorRadius()
return self:GetSize() / 2, self:GetSize() / 2
end
function XSmoothHeightBrush:GetAffectedRadius()
return self:GetSize()
end
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