c图形图象函数（c graphic image function）

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1、c图形图象函数（Cgraphicimagefunction）Clanguagegraphicsandimagefunctionlibrarygraphics.h(1)pixelfunction56.putpiel()drawingpixelfunction57.GetPixel()returnsthepixelcolorfunction(two)linearandlinearfunctions58.line()linedrawingfunction59.lineto()linedrawingfunctio

2、n60.linerel()relativelinedrawingfunction61.setlinestyle()setlinearfunction62.(getlinesettings)toobtainlinearfunctionset63.setwritemode()setlinepatternfunction(three)polygonfunction64.rectangle()drawingrectangularfunctions65.bar()drawastripfunction66.bar3d

3、()drawingblockfunction67.drawpoly()drawpolygonfunction(four)circle,arcandcurvefunction68.getaspectratio()toobtainaspectratiofunction69.circle()circularfunction70.arc()drawingarcfunction71.ellipse()drawingellipticarcfunction72.fillellipse()drawingellipticr

4、egionfunction73.pieslice()drawingsectorfunction74.sector()drawingellipticsectorfunctions75.getarccoords()toobtainarccoordinatefunction(five)filledfunctionSetfillstyle(76.)setthefillpatternandcolorfunctionSetfillpattern(77.)tosettheuserpatternfunction78.fl

5、oodfill()filledclosedfieldfunction79.fillpoly()filledpolygonfunction80.(getfillsettings)toobtainthefillfunction81.(getfillpattern)toobtaintheuserpatternsettingfunction(six)imagefunction82.ImageSize()imagestoragesizefunction83.getimage()saveimagefunction84

6、.putimage()outputimagefunctionFour,graphicsandimagefunctionsFormanygraphicsapplications,thestraightlineandthecurveisveryuseful.Butforsomegraphicscanonlyrelyontheoperationofasinglepixelinordertodraw.Ofcourse,ifthereisnopicturepixelfunction,functioncannotop

7、eratethestraightlineandcurve.Moreover,byusingthepixelfunctioninlargescale,thewholegraphcanbesaved,written,erasedandsuperimposedontheoriginalgraphicsonthescreen.(1)pixelfunction56.putpixel()drawingpixelfunctionFunction:function(putpixel)ingraphicsmodeonthe

8、screentodrawapixel.Usage:functioncallsforvoidputpixel(intx,inty,intcolor);Description:theparameterx,yisthecoordinatesofpixels,coloristhecolorofthepixel,itcanbeacolorsymbolname,canalsobeintegercolorvalue.Theheaderfil