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Newcomers DBPro Corner / A Dotty Tip

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Easily Confused

Years of Service

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Joined: 22nd Oct 2002

Location: U.K. Earth. (turn right at Venus)

Posted: 23rd Jan 2003 00:46

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I don't class myself a new to DBPro, but I pass this tip on to those who are.

If you have been experimenting with the 2D drawing functions you may have discoverd that the Dot command is a little slow. There is a faster way, if you are not using things like Lock/Unlock Pixels and memblocks.

Cheat with the Box command.

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.

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Easily Confused

Years of Service

User Offline

Joined: 22nd Oct 2002

Location: U.K. Earth. (turn right at Venus)

Posted: 23rd Jan 2003 00:47

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+ Code Snippet

sync on : sync rate 60
set text opaque
print "This test will draw 10000 dots first using the Dot"
print "command then the Box command. Press any key to start."
sync : wait key

rem --- the dot method
cls
t = timer()
for i = 1 to 10000
  x = rnd(639)
  y = rnd(479)

  dot x,y

next i

resultA = timer() - t
print "10000 Dots drawn in ";resultA;" milliseconds."
print "Press any key."
sync : wait key

rem --- the box method
cls
t = timer()
for i = 1 to 10000
  x = rnd(639)
  y = rnd(479)

  box x,y,x+1,y+1

next i

resultB = timer() - t
print "10000 Boxes drawn in ";resultB;" milliseconds."
print "Box method is ";(resultA / resultB);" times faster!!"
print "Press any key to exit."
sync : wait key
end

For me, the Box method is about 25+ times faster.

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.

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Newcomers DBPro Corner / A Dotty Tip