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.lua
Expert Cheater
 Reputation: 1
Joined: 13 Sep 2018
Posts: 203
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 Posted: Thu Dec 12, 2019 2:33 am Post subject: How to solve the problem of sawtooth |
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Can you optimize it? I want to remove the sawtooth around the circle
| Code: | if f then f.destroy() end
f=createForm()
function setShape(str,vv)
local vx=str.Width
local vy=str.Height
if bm then bm.destroy() end
bm=createBitmap()
bm.Width=vx
bm.Height=vy
--bm.Canvas.Pen.Color=0x555555
bm.Canvas.Pen.Width=1
bm.Canvas.roundRect(0,0,vx,vy,vv,vv)
str.setShape(bm)
end
for i=1,5 do
p=createPanel(f)
p.setSize(40,40)
p.setPosition(i*45,50)
p.color=i*50
setShape(p,45)
end |
| Description: |
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| Filesize: |
68.29 KB |
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1778 Time(s) |
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atom0s
Moderator
 Reputation: 205
Joined: 25 Jan 2006
Posts: 8587
Location: 127.0.0.1
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| Posted: Thu Dec 12, 2019 4:50 am Post subject: |
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You can partially abuse the newer drawWithMask function to get a bit cleaner:
| Code: |
if f then f.destroy() end
f=createForm()
function setShape(str, vv)
local vx = str.Width;
local vy = str.Height;
if (bm1) then bm1.destroy() end
if (bm2) then bm2.destroy() end
local multAmount = 10;
local multOffset = 5;
bm1 = createBitmap(vx * multAmount, vy * multAmount)
bm1.Canvas.clear();
bm1.Canvas.Pen.Width = 1;
bm1.Canvas.AntialiasingMode = amOn;
bm1.Canvas.roundRect(0 + multOffset, 0 + multOffset, vx * multAmount - multOffset, vy * multAmount - multOffset, vv * multAmount, vv * multAmount);
bm2 = createBitmap(vx, vy)
bm2.Canvas.clear();
bm2.Canvas.Pen.Width = 1;
bm2.Canvas.AntialiasingMode = amOn;
bm2.Canvas.drawWithMask(0, 0, vx, vy, bm1, 0, 0, vx * multAmount, vy * multAmount);
str.setShape(bm2);
end
for i = 1, 5 do
p = createPanel(f);
p.setSize(40, 40);
p.setPosition(i * 45, 50);
p.Color = i * 50;
setShape(p, 100);
end
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Still has non-smooth edges but less noticeable. Doesn't seem like any of the current drawing stuff adheres to the anti-alias settings though.
This uses two bitmaps to draw 1 very large version of the circle, then another to draw it scaled down to get better results.
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.lua
Expert Cheater
Reputation: 1
Joined: 13 Sep 2018
Posts: 203
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| Posted: Thu Dec 12, 2019 5:13 am Post subject: |
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| thank you very much. This code makes the edges smooth. It seems that it can only be used for larger images
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