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DevNoteJP
更新履歴
rbofについてswigの使い方がよく分からなかった作者が、この際だからRubyの拡張ライブラリの勉強を、とはじめてのC++を駆使して見よう見まねで書いたopenFrameworksの愚直なラッパーです。以下、留意点になります。
導入現在アルファ版のため、バイナリをダウンロードできるようにはなっていません。お手数ですがチェックアウトして下さい: $ svn checkout http://rbof.googlecode.com/svn/trunk/ rbof-read-only ライブラリを利用するには、あなたが作成するRubyコードで以下のようにします。 require 'rbof' その際、ロードパスにあらかじめ以下の3つのファイルを設置しておいて下さい。
コード例openFrameworksをRubyから使ったときの雰囲気をお伝えします。実行してみたい方は是非チェックアウトして下さい！ フォントの使用: require 'rbof'
class App < OF::SimpleApp
include OF
def setup
noFill
background 0, 0, 0
setVerticalSync true
@font = TrueTypeFont.new
font_size = 32
@font.loadFont "verdana.ttf", font_size
@font.setLineHeight font_size * 1.25
end
def draw
setColor 0xffffff
drawBitmapString "click to view the bounding box", 20, 40
str = millis_to_print
@font.drawString str, 20, 100
# draw the bounding box
if @pressed
setColor 0xff0000
box = @font.getStringBoundingBox str, 20, 100
rect box.x, box.y, box.width, box.height
end
end
def millis_to_print
result = getElapsedTimeMillis.to_s
%w[
zero one two three four
five six seven eight nine
].each_with_index do |s, i|
result.gsub!(/#{i}/) {"#{s}\n"}
end
result
end
def mousePressed(x, y, button)
@pressed = true
end
def mouseReleased
@pressed = false
end
end
OF.setupOpenGL 400, 400, OF::WINDOW
OF.runApp App.new画像ファイルのロード、表示、保存: require 'rbof'
class App < OF::SimpleApp
include OF
def setup
setVerticalSync true
@trans_img = Image.new
@trans_img.loadImage "transparency.png"
@noise_img = Image.new
@noise_w, @noise_h = 100, 100
@noise_img.allocate @noise_w, @noise_h, IMAGE_GRAYSCALE
@pixels = Array.new @noise_w * @noise_h
@msg = "click to capture screen"
end
def update
@pixels.map! {rand 255}
@noise_img.setFromPixels @pixels, @noise_w, @noise_h, IMAGE_GRAYSCALE
end
def draw
w, h = getWidth, getHeight
@noise_img.draw 0, 0, w, h
drawBitmapString @msg, 20, 40
translate 0.5 * w, 0.5 * h, 0
pushMatrix
rotate getFrameNum * 2, 0, 1, 0
enableAlphaBlending
@trans_img.draw(
-0.5 * @trans_img.width + 50,
-0.5 * @trans_img.height
)
disableAlphaBlending
popMatrix
end
def mousePressed(x, y, button)
save_img = Image.new
save_img.grabScreen 0, 0, getWidth, getHeight
file_name = "snapshot.png"
save_img.saveImage file_name
@msg = "done! see #{toDataPath file_name}"
end
end
OF.setupOpenGL 400, 400, OF::WINDOW
OF.runApp App.newサウンドファイルの再生: require 'rbof'
class App < OF::SimpleApp
include OF
def setup
background 0, 0, 0
setVerticalSync true
@sound = SoundPlayer.new
@sound.loadSound "1085.mp3"
@sound.setLoop true
@sound.play
end
def update
@sound.setSpeed 2 * (1 - mouseY.to_f / getHeight)
@sound.setPan mouseX.to_f / getWidth
end
def draw
setColor 0xffffff
drawBitmapString "move your mouse", 20, 40
setColor 0xffff00
w = 5
soundGetSpectrum(81).each_with_index do |v, i|
rect i * w, 200, w, -v * 800
rect i * w, 200, w, v * 800
end
end
end
OF.setupOpenGL 400, 400, OF::WINDOW
OF.runApp App.newカメラ入力からピクセルを取得: require 'rbof'
class App < OF::SimpleApp
include OF
def setup
setBackgroundAuto false
setVerticalSync true
@cam = VideoGrabber.new
@cam.initGrabber 320, 240
@pixels = Array.new 320 * 240 * 3
end
def update
@cam.grabFrame
end
def draw
if @cam.isFrameNew
background 255, 255, 255
draw_dots
draw_src
end
end
def draw_dots
setColor 0
pushMatrix
translate 320, 0, 0
pixels = @cam.getPixels
4.step 320, 8 do |i|
4.step 240, 8 do |j|
v = pixels[(j * 320 + i) * 3]
v = 1 - v / 255.0
circle i, j, 10 * v
end
end
popMatrix
end
def draw_src
setColor 0xffffff
@cam.draw 0, 0
end
def keyPressed(key)
@cam.videoSettings if key.chr == 's'
end
end
OF.setupOpenGL 640, 240, OF::WINDOW
OF.runApp App.newダイナミックサウンド: require 'rbof'
class App < OF::SimpleApp
include OF
def setup
background 0, 0, 0
setColor 0xFFFFFF
@phase = 0
@phase_adder = 0
@phase_adder_target = 0
buff_size = 1024
@audio = Array.new buff_size, 0
soundStreamSetup 1, 0, self, 44100, buff_size, 4
end
def draw
drawBitmapString "move your mouse or click to make a noise", 20, 40
400.times do |i|
line i, 200, i, 200 + @audio[i] * 500.0
end
end
def mouseMoved(x, y)
height = 1 - y.to_f / getHeight
freq = 2000.0 * height
@phase_adder_target = (freq / 44100) * TWO_PI
end
def mousePressed(x, y, button)
@pressed = true
end
def mouseReleased
@pressed = false
end
def audioRequested(buff, size, channels)
volume = 0.1
if @pressed
buff.map! {randomf * volume}
else
@phase_adder = 0.95 * @phase_adder + 0.05 * @phase_adder_target
buff.length.times do |i|
@phase += @phase_adder
buff[i] = Math.sin(@phase) * volume
end
end
@audio = buff
end
end
OF.setupOpenGL 400, 400, OF::WINDOW
OF.runApp App.newopenFrameworksとの命名の違いOFというモジュールの中に全て定義されているので、名前に接頭辞 "of" や "OF" を付けていません。 本家のドキュメントと以下の一覧から対応を探して下さい。 Constants: CLOSE FOUR_PI FULLSCREEN GAME_MODE GL_ALPHA GL_BLUE GL_COLOR_INDEX GL_DEPTH_COMPONENT GL_GREEN GL_LUMINANCE GL_LUMINANCE_ALPHA GL_RED GL_RGB GL_RGBA GL_STENCIL_INDEX HALF_PI IMAGE_COLOR IMAGE_COLOR_ALPHA IMAGE_GRAYSCALE IMAGE_UNDEFINED KEY_BACKSPACE KEY_DEL KEY_DOWN KEY_END KEY_F1 KEY_F10 KEY_F11 KEY_F12 KEY_F2 KEY_F3 KEY_F4 KEY_F5 KEY_F6 KEY_F7 KEY_F8 KEY_F9 KEY_HOME KEY_INSERT KEY_LEFT KEY_MODIFIER KEY_PAGE_DOWN KEY_PAGE_UP KEY_RETURN KEY_RIGHT KEY_UP LOOP_NONE LOOP_NORMAL LOOP_PALINDROME M_TWO_PI PI POLY_WINDING_ABS_GEQ_TWO POLY_WINDING_NEGATIVE POLY_WINDING_NONZERO POLY_WINDING_ODD POLY_WINDING_POSITIVE RECTMODE_CENTER RECTMODE_CORNER TWO_PI WINDOW Module functions: bClearBg background beginShape bezier bezierVertex bgColor circle curve curveVertex disableAlphaBlending disableSmoothing drawBitmapString ellipse enableAlphaBlending enableSmoothing endShape fill getDay getElapsedTimeMillis getElapsedTimef getFrameNum getFrameRate getHeight getHours getMinutes getMonth getRectMode getScreenHeight getScreenWidth getSeconds getVersionInfo getWeekDay getWidth getWindowMode getWindowPositionX getWindowPositionY getYear hideCursor launchBrowser line nextContour nextPow2 noFill popMatrix pushMatrix random randomf randomuf rect rotate runApp scale seedRandom setBackgroundAuto setCircleResolution setColor setFrameRate setFullscreen setPolyMode setRectMode setVerticalSync setWindowPosition setWindowShape setWindowTitle setupOpenGL setupScreen showCursor sleepMillis soundGetSpectrum soundSetVolume soundStopAll soundStreamClose soundStreamListDevices soundStreamSetup soundStreamStart soundStreamStop toDataPath toString toggleFullscreen translate triangle vertex Image methods: allocate bpp clear draw getPixels grabScreen height loadImage resize saveImage setFromPixels setImageType setUseTexture type width Rectangle methods: height width x y Serial methods: bVerbose close enumerateDevices readByte readBytes setVerbose setup writeByte writeBytes SimpleApp methods: audioReceived audioRequested draw exit keyPressed keyReleased mouseDragged mouseMoved mousePressed mouseReleased mouseX mouseY setup update SoundPlayer methods: getIsPlaying getPan getPosition getSpeed loadSound play setLoop setMultiPlay setPan setPaused setPosition setSpeed setVolume stop unloadSound Texture methods: allocate clear draw loadData loadScreenData TrueTypeFont methods: bAntiAlised bFullCharacterSet bLoadedOk drawString getLineHeight getStringBoundingBox loadFont nCharacters setLineHeight stringHeight stringWidth VideoGrabber methods: close draw getPixels grabFrame height initGrabber isFrameNew listDevices setDeviceID setUseTexture setVerbose videoSettings width VideoPlayer methods: bLoaded closeMovie draw getDuration getPixels getPosition getSpeed height idleMovie isFrameNew loadMovie play setLoopState setPaused setPosition setSpeed setUseTexture setVolume speed stop width ruby_caseを有効にする以下のようにrequireするファイルを切り替えることで、Rubyらしいメソッド名に変更できます。ruby_caseとcamelCaseの併用はできませんので、ご注意下さい。 # to use method names like ruby, do this:
require 'rbof_rubycase'
# for example:
# getFrameRate => frame_rate
# bLoaded => loaded?
# setVerticalSync => vertical_sync=
class App < OF::SimpleApp
include OF
def setup
no_fill
background 0, 0, 0
self.vertical_sync = true
end
def draw
color 0xffffff
draw_bitmap_string "click to see all ruby_case", 20, 40
end
def mouse_pressed(x, y, button)
load 'runme.rb'
end
end
OF.setup_open_gl 400, 400, OF::WINDOW
OF.run_app App.newあくまで予定
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