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GC拓展模块调整，圆角正多边形成为绘图函数

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This commit is contained in:
MrZ626
2021-08-08 03:08:35 +08:00
parent 30308eb308
commit 2a0b26f2fd
1 changed files with 52 additions and 60 deletions
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112
Zframework/gcExtend.lua
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@@ -32,6 +32,55 @@ function GC.shadedPrint(str,x,y,mode,d,clr1,clr2)
setColor(clr2 or COLOR.Z) setColor(clr2 or COLOR.Z)
printf(str,x,y,w,mode) printf(str,x,y,w,mode)
end end
function GC.regularPolygon(mode,x,y,R,segments,r,phase)
local X,Y={},{}
local ang=phase or 0
local angStep=6.283185307179586/segments
for i=1,segments do
X[i]=x+R*math.cos(ang)
Y[i]=y+R*math.sin(ang)
ang=ang+angStep
end
X[segments+1]=x+R*math.cos(ang)
Y[segments+1]=y+R*math.sin(ang)
local halfAng=6.283185307179586/segments/2
local erasedLen=r*math.tan(halfAng)
if mode=='line'then
erasedLen=erasedLen+1--Fix 1px cover
for i=1,segments do
--Line
local x1,y1,x2,y2=X[i],Y[i],X[i+1],Y[i+1]
local dir=math.atan2(y2-y1,x2-x1)
gc.line(x1+erasedLen*math.cos(dir),y1+erasedLen*math.sin(dir),x2-erasedLen*math.cos(dir),y2-erasedLen*math.sin(dir))
--Arc
ang=ang+angStep
local R2=R-r/math.cos(halfAng)
local arcCX,arcCY=x+R2*math.cos(ang),y+R2*math.sin(ang)
gc.arc('line','open',arcCX,arcCY,r,ang-halfAng,ang+halfAng)
end
elseif mode=='fill'then
local L={}
for i=1,segments do
--Line
local x1,y1,x2,y2=X[i],Y[i],X[i+1],Y[i+1]
local dir=math.atan2(y2-y1,x2-x1)
table.insert(L,x1+erasedLen*math.cos(dir))
table.insert(L,y1+erasedLen*math.sin(dir))
table.insert(L,x2-erasedLen*math.cos(dir))
table.insert(L,y2-erasedLen*math.sin(dir))
--Arc
ang=ang+angStep
local R2=R-r/math.cos(halfAng)
local arcCX,arcCY=x+R2*math.cos(ang),y+R2*math.sin(ang)
gc.arc('fill','open',arcCX,arcCY,r,ang-halfAng,ang+halfAng)
end
gc.polygon('fill',L)
else
error("Draw mode should be 'line' or 'fill'")
end
end
do--function GC.DO(L) do--function GC.DO(L)
local cmds={ local cmds={
origin="origin", origin="origin",
@@ -62,67 +111,7 @@ do--function GC.DO(L)
fElps=function(...)gc.ellipse('fill',...)end, fElps=function(...)gc.ellipse('fill',...)end,
dElps=function(...)gc.ellipse('line',...)end, dElps=function(...)gc.ellipse('line',...)end,
fPoly=function(...)gc.polygon('fill',...)end, fPoly=function(...)gc.polygon('fill',...)end,
dPoly=function(...)gc.polygon('line',...)end, dPoly=function(...)gc.polygon('line',...)end,
fRPol=function(x,y,R,segments,r,phase)
local X,Y={},{}
local ang=phase or 0
local angStep=6.283185307179586/segments
for i=1,segments do
X[i]=x+R*math.cos(ang)
Y[i]=y+R*math.sin(ang)
ang=ang+angStep
end
X[segments+1]=x+R*math.cos(ang)
Y[segments+1]=y+R*math.sin(ang)
local L={}
local halfAng=6.283185307179586/segments/2
local erasedLen=r*math.tan(halfAng)
for i=1,segments do
--Line
local x1,y1,x2,y2=X[i],Y[i],X[i+1],Y[i+1]
local dir=math.atan2(y2-y1,x2-x1)
table.insert(L,x1+erasedLen*math.cos(dir))
table.insert(L,y1+erasedLen*math.sin(dir))
table.insert(L,x2-erasedLen*math.cos(dir))
table.insert(L,y2-erasedLen*math.sin(dir))
--Arc
ang=ang+angStep
local R2=R-r/math.cos(halfAng)
local arcCX,arcCY=x+R2*math.cos(ang),y+R2*math.sin(ang)
gc.arc('fill','open',arcCX,arcCY,r,ang-halfAng,ang+halfAng)
end
gc.polygon('fill',L)
end,
dRPol=function(x,y,R,segments,r,phase)
local X,Y={},{}
local ang=phase or 0
local angStep=6.283185307179586/segments
for i=1,segments do
X[i]=x+R*math.cos(ang)
Y[i]=y+R*math.sin(ang)
ang=ang+angStep
end
X[segments+1]=x+R*math.cos(ang)
Y[segments+1]=y+R*math.sin(ang)
local halfAng=6.283185307179586/segments/2
local erasedLen=r*math.tan(halfAng)
for i=1,segments do
--Line
local x1,y1,x2,y2=X[i],Y[i],X[i+1],Y[i+1]
local dir=math.atan2(y2-y1,x2-x1)
gc.line(x1+erasedLen*math.cos(dir),y1+erasedLen*math.sin(dir),x2-erasedLen*math.cos(dir),y2-erasedLen*math.sin(dir))
--Arc
ang=ang+angStep
local R2=R-r/math.cos(halfAng)
local arcCX,arcCY=x+R2*math.cos(ang),y+R2*math.sin(ang)
gc.arc('line','open',arcCX,arcCY,r,ang-halfAng,ang+halfAng)
end
end,
dPie=function(...)gc.arc('line',...)end, dPie=function(...)gc.arc('line',...)end,
dArc=function(...)gc.arc('line','open',...)end, dArc=function(...)gc.arc('line','open',...)end,
@@ -130,6 +119,9 @@ do--function GC.DO(L)
fPie=function(...)gc.arc('fill',...)end, fPie=function(...)gc.arc('fill',...)end,
fArc=function(...)gc.arc('fill','open',...)end, fArc=function(...)gc.arc('fill','open',...)end,
fBow=function(...)gc.arc('fill','closed',...)end, fBow=function(...)gc.arc('fill','closed',...)end,
fRPol=function(...)GC.regularPolygon('fill',...)end,
dRPol=function(...)GC.regularPolygon('line',...)end,
} }
local sizeLimit=gc.getSystemLimits().texturesize local sizeLimit=gc.getSystemLimits().texturesize
function GC.DO(L) function GC.DO(L)