turns-00056.parquet:39612
e8f0f185955063052c535c19degenerate_repetitionAbsentFinal dense release
USER
can you optimise my line drawing..
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-- OSGL v1.4b - Open-Source-Graphical-Library
-- Copyright © 2023-2024 Gunshot Sound Studios (@saaawdust)
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------------------------------------------------------------
local OSGL = script.Parent.Parent
local draw = OSGL.draw
local pixel = require(draw.pixel)
local types = require(OSGL.types)
return function(object: types.DrawableObject, startX: number, startY: number, stopX: number, stopY: number, thickness: number, color: types.Color)
thickness = thickness or 1
color = color or color.BLACK
local sizeX, sizeY = object.sizeX, object.sizeY
local dx = stopX - startX
local dy = stopY - startY
local steps = math.max(math.abs(dx), math.abs(dy))
local xIncrement = dx / steps
local yIncrement = dy / steps
local x = startX
local y = startY
local function drawThickPoint(px: number, py: number, thickness: number)
local halfThickness = thickness / 2
for offsetX = -halfThickness, halfThickness do
for offsetY = -halfThickness, halfThickness do
local pixelX = math.floor(px + offsetX + 0.5)
local pixelY = math.floor(py + offsetY + 0.5)
if pixelX >= 0 and pixelX < sizeX and pixelY >= 0 and pixelY < sizeY then
pixel(object, pixelX, pixelY, color)
end
end
end
end
for _ = 0, steps do
drawThickPoint(x, y, thickness)
x += xIncrement
y += yIncrement
end
endASSISTANT
Your line drawing function appears to be efficient in its basic structure, but there are a few optimizations and improvements we can make to ensure better performance and potentially cleaner code. Here are some modifications you might consider implementing:
### Optimized Line Drawing Function
```lua
local OSGL = script.Parent.Parent
local draw = OSGL.draw
local pixel = require(draw.pixel)
local types = require(OSGL.types)
return function(object: types.DrawableObject, startX: number, startY: number, stopX: number, stopY: number, thickness: number, color: types.Color)
thickness = thickness or 1
color = color or types.color.BLACK -- Fixed a small bug
local sizeX, sizeY = object.sizeX, object.sizeY
local dx = stopX - startX
local dy = stopY - startY
local steps = math.max(math.abs(dx), math.abs(dy))
-- Calculating increments
local xIncrement = dx / steps
local yIncrement = dy / steps
-- Drawing thickness offset pre-computation
local halfThickness = math.floor(thickness / 2)
local drawOffsets = {}
for offsetX = -halfThickness, halfThickness do
for offsetY = -halfThickness, halfThickness do
table.insert(drawOffsets, {offsetX, offsetY})
end
end
local function drawThickPoint(px: number, py: number)
for _, offset in ipairs(drawOffsets) do
local pixelX = math.floor(px + offset[1] + 0.5)
local pixelY = math.floor(py + offset[2] + 0.5)
if pixelX >= 0 and pixelX < sizeX and pixelY >= 0 and pixelY < sizeY then
pixel(object, pixelX, pixelY, color)
end
end
end
-- Drawing
local x, y = startX, startY
for step = 0, steps do
drawThickPoint(x, y)
x += xIncrement
y += yIncrement
end
end
```
### Key Optimizations:
1. **Thickness Handling:**
- Pre-compute the offsets for thickness. This avoids recalculating the offsets in every call of `drawThickPoint`.
2. **Condition Check:**
- The condition to check if the pixel coordinates are in the drawable area remains unchanged. It ensures no unnecessary drawing is performed outside the bounds.
3. **Local Variable Usage:**
- Variables like `halfThickness` were computed once rather than being computed in every loop iteration.
4. **Avoiding Unnecessary Computation:**
- The offset table (`drawOffsets`) is created once, and the much smaller nested loop only calculates pixel positions once, which reduces redundant calculations.
### Additional Considerations:
- If performance becomes critical with a large thickness value or extensive draw calls, consider looking into more efficient line drawing algorithms such as Bresenham's algorithm adapted for thickness. This is particularly useful for low-level graphic operations where performance might be a bottleneck.
- Depending on the frequency of calls to this function and the typical values of thickness and coordinates, you may also benefit from further profiling or experimenting with different drawing strategies.