Screen第三板函数的用法：
% Open or clo a window or texture:
周佳奇[windowPtr,rect]=Screen('OpenWindow',windowPtrOrScreenNumber [,color] [,rect] [,pixelSize] [,numberOfBuffers] [,stereomode] [,multisample][,imagingmode]);
[windowPtr,rect]=Screen('OpenOffscreenWindow',windowPtrOrScreenNumber [,color] [,rect] [,pixelSize] [,specialFlags] [,multiSample]);
textureIndex=Screen('MakeTexture', WindowIndex, imageMatrix [, optimizeForDrawAngle=0] [, specialFlags=0] [, floatprecision=0] [, textureOrientation=0] [, textureShader=0]);
Screen('Clo', [windowOrTextureIndex or list of textureIndices/offscreenWindowIndices]);
Screen('CloAll');
% Draw lines and solids like QuickDraw and DirectX (OS 9 and Windows):
currentbuffer = Screen('SelectStereoDrawBuffer', windowPtr [, bufferid] [, param1]);
Screen('DrawLine', windowPtr [,color], fromH, fromV, toH, toV [,penWidth]);
Screen('DrawArc',windowPtr,[color],[rect],startAngle,arcAngle)
Screen('FrameArc',windowPtr,[color],[rect],startAngle,arcAngle[,penWidth] [,penHeight] [,penMode])
秦始皇陵墓Screen('FillArc',windowPtr,[color],[rect],startAngle,arcAngle)
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Screen('FillRect', windowPtr [,color] [,rect] );
Screen('FrameRect', windowPtr [,color] [,rect] [,penWidth]);
孕妇上火怎么办Screen('FillOval', windowPtr [,color] [,rect] [,perfectUpToMaxDiameter]);
Screen('FrameOval', windowPtr [,color] [,rect] [,penWidth] [,penHeight] [,penMode]);
Screen('FramePoly', windowPtr [,color], pointList [,penWidth]);
Screen('FillPoly', windowPtr [,color], pointList [, isConvex]);
% New OpenGL functions for OS X:
Screen('glPoint', windowPtr, color, x, y [,size]);
Screen('gluDisk', windowPtr, color, x, y [,size]);
Screen('DrawDots', windowPtr, xy [,size] [,color] [,center] [,dot_type]);
Screen('DrawLines', windowPtr, xy [,width] [,colors] [,center] [,smooth]);
[sourceFactorOld, destinationFactorOld, colorMaskOld]=Screen('BlendFunction', windowIndex, [sourceFactorNew], [destinationFactorNew], [colorMaskNew]);
% Draw Text in windows
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textModes = Screen('TextModes');
oldCopyMode=Screen('TextMode', windowPtr [,textMode]);
oldTextSize=Screen('TextSize', windowPtr [,textSize]);
oldStyle=Screen('TextStyle', windowPtr [,style]);
[oldFontName,oldFontNumber]=Screen(windowPtr,'TextFont' [,fontNameOrNumber]);
[normBoundsRect, offtBoundsRect]= Screen('TextBounds', windowPtr, text [,x] [,y] [,yPositionIsBaline] [,swapTextDirection]);
[newX,newY]=Screen('DrawText', windowPtr, text [,x] [,y] [,color] [,backgroundColor] [,yPositionIsBaline] [,swapTextDirection]);
oldTextColor=Screen('TextColor', windowPtr [,colorVector]);
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oldTextBackgroundColor=Screen('TextBackgroundColor', windowPtr [,colorVector]);
% Copy an image, very quickly, between textures, offscreen windows and onscreen windows.
[resident [texidresident]] = Screen('PreloadTextures', windowPtr [, texids]);
Screen('DrawTexture', windowPointer, texturePointer [,sourceRect] [,destinationRect] [,rotationAngle] [, filterMode] [, globalAlpha] [, modulateColor] [, textureShader] [, specialFlags] [, auxParameters]);
Screen('DrawTextures', windowPointer, texturePointer(s) [, sourceRect(s)] [, destinationRect(s)] [, rotationAngle(s)] [, filterMode(s)] [, globalAlpha(s)] [, modulateColor(s)] [, textureShader] [, specialFlags] [, auxParameters]);
Screen('CopyWindow', srcWindowPtr, dstWindowPtr, [srcRect], [dstRect], [copyMode])
% Copy an image, slowly, between matrices and windows :
imageArray=Screen('GetImage', windowPtr [,rect] [,bufferName] [,floatprecision=0] [,nrchannels=3])
Screen('PutImage', windowPtr, imageArray [,rect]);
% Synchronize with the window's screen (on-screen only):
[VBLTimestamp StimulusOntTime FlipTimestamp Misd Beampos] = Screen('Flip', windowPtr [, when] [, dontclear] [, dontsync] [, multiflip]);
Screen('AsyncFlipBegin', windowPtr [, when] [, dontclear] [, dontsync] [, multiflip]);
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[VBLTimestamp StimulusOntTime FlipTimestamp Misd Beampos] = Screen('AsyncFlipEnd', windowPtr);
[VBLTimestamp StimulusOntTime FlipTimestamp Misd Beampos] = Screen('AsyncFlipCheckEnd', windowPtr);
[VBLTimestamp StimulusOntTime swapCertainTime] = Screen('WaitUntilAsyncFlipCertain', windowPtr);
[telapd] = Screen('DrawingFinished', windowPtr [, dontclear] [, sync]);
