Xojo Conferences
 MBS Oct 2019 Cologne DE

Platforms to show: All Mac Windows Linux Cross-Platform

FAQ.How to draw a nice antialiased line?
```Sub drawLine(xs as Integer, ys as Integer, xe as Integer, ye as Integer, face as RGBSurface, lineColor as color)  dim intX, intY, count, n, xDiff, yDiff as Integer  dim v, v1, floatX, floatY, xx, yy, xStep, yStep as Double  dim c as color    const st=1.0    xDiff=xe-xs  yDiff=ye-ys  count=max(abs(xDiff), abs(yDiff))  xStep=xDiff/count  yStep=yDiff/count  xx=xs  yy=ys  for n=1 to count    intX=xx    intY=yy    floatX=xx-intX    floatY=yy-intY        v=(1-floatX)*(1-floatY)*st    v1=1-v    c=face.pixel(intX, intY)    face.pixel(intX, intY)=rgb(v*lineColor.red+v1*c.red, v*lineColor.green+v1*c.green, v*lineColor.blue+v1*c.blue)    v=floatX*(1-floatY)*st    v1=1-v    c=face.pixel(intX+1, intY)    face.pixel(intX+1, intY)=rgb(v*lineColor.red+v1*c.red, v*lineColor.green+v1*c.green, v*lineColor.blue+v1*c.blue)    v=(1-floatX)*floatY*st    v1=1-v    c=face.pixel(intX, intY+1)    face.pixel(intX, intY+1)=rgb(v*lineColor.red+v1*c.red, v*lineColor.green+v1*c.green, v*lineColor.blue+v1*c.blue)    v=floatX*floatY*st    v1=1-v    c=face.pixel(intX+1, intY+1)    face.pixel(intX+1, intY+1)=rgb(v*lineColor.red+v1*c.red, v*lineColor.green+v1*c.green, v*lineColor.blue+v1*c.blue)        xx=xx+xStep    yy=yy+yStep  next  End Sub