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modified a sample (paint.rb) to avoid some errors

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ser1zw 2011-05-07 08:41:47 +09:00
parent 206ae1ba97
commit 9555aa34a6
1 changed files with 8 additions and 9 deletions
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17
examples/paint.rb
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@ -6,10 +6,10 @@ require "opencv"
include OpenCV include OpenCV
window = GUI::Window.new("free canvas") window = GUI::Window.new("free canvas")
canvas = CvMat.new(500, 500, 0, 3).fill!(0xFF) # create white canvas canvas = CvMat.new(500, 500, CV_8U, 3).fill!(CvColor::White) # create white canvas
window.show canvas window.show canvas
colors = CvColor::constants.collect{|i| i.to_s } colors = CvColor::constants.collect{ |i| i.to_s }
usage =<<USAGE usage =<<USAGE
[mouse] [mouse]
@ -22,15 +22,14 @@ esc - exit
USAGE USAGE
puts usage puts usage
point = nil
# drawing option # drawing option
opt = { opt = {
:color => CvColor::Black, :color => CvColor::Black,
:tickness => 1 :tickness => 1
} }
window.on_mouse{|m| point = nil
window.on_mouse{ |m|
case m.event case m.event
when :move when :move
if m.left_button? if m.left_button?
@ -50,22 +49,22 @@ window.on_mouse{|m|
color_name = '' color_name = ''
while key = GUI.wait_key while key = GUI.wait_key
next if key < 0 next if key < 0 or key > 255
case key.chr case key.chr
when "\e" # [esc] - exit when "\e" # [esc] - exit
exit exit
when '1'..'9' when '1'..'9'
puts "change thickness to #{key.chr.to_i}." puts "change thickness to #{key.chr.to_i}."
opt[:thickness] = key.chr.to_i opt[:thickness] = key.chr.to_i
else when /[A-Za-z]/
color_name << key.chr color_name << key.chr
choice = colors.find_all{|i| i =~ /\A#{color_name}/i} choice = colors.find_all{ |i| i =~ /\A#{color_name}/i }
if choice.size == 1 if choice.size == 1
color,= choice color,= choice
puts "change color to #{color}." puts "change color to #{color}."
opt[:color] = CvColor::const_get(color) opt[:color] = CvColor::const_get(color)
end end
color_name = '' if choice.length < 2 color_name = '' if choice.size < 2
end end
end end