可視化1

1、南京信息工程大學(xué)實(shí)驗(yàn)（實(shí)習(xí)）報(bào)告實(shí)驗(yàn)（實(shí)習(xí)）名稱圖形程序設(shè)計(jì)及其應(yīng)用實(shí)驗(yàn)（實(shí)習(xí)）日期一、實(shí)驗(yàn)?zāi)康囊弧?shí)驗(yàn)?zāi)康?熟悉圖形設(shè)備接口的概念及其應(yīng)用。二、實(shí)驗(yàn)內(nèi)容二、實(shí)驗(yàn)內(nèi)容及步驟及步驟實(shí)驗(yàn)任務(wù)1.熟悉基于圖形應(yīng)用的程序設(shè)計(jì)；2.掌握刷新技術(shù)及其應(yīng)用；3.掌握映射模式的應(yīng)用；4.掌握繪圖工具的使用。實(shí)驗(yàn)內(nèi)容編寫一個(gè)程序，在屏幕上出現(xiàn)一個(gè)圓心沿正弦曲線軌跡移動(dòng)的實(shí)心圓，且每隔四分之一周期，圓的填充色和圓的周邊顏色都發(fā)生變化，同時(shí)圓的半徑在四分之一

2、周期之內(nèi)由正弦曲線幅值的0.2倍至0.6倍線性增長。程序代碼：程序代碼：#include#include#include#include#definePi3.1415926longWINAPIWndProc(HWNDhWndUINTiMessageUINTwParamLONGlParam)doubledfTheta=0dfRange=100.0longi=0j=0longlCentreX=0lCentreY=0lRadious=(lon

3、g)(0.2dfRange)POINTlpSin[100]intWINAPIWinMain(HINSTANCEhInstanceHINSTANCEhPrevInstLPSTRlpszCmdLineintnCmdShow)HWNDhwndMSGMessageWNDCLASSwndclasswndclass.cbClsExtra=0窗口類無擴(kuò)展wndclass.cbWndExtra=0窗口實(shí)例無擴(kuò)展wndclass.hInstance=hI

4、nstance當(dāng)前實(shí)例句柄wndclass.hCurs=LoadCurs(NULLIDC_ARROW)窗口采用箭頭光標(biāo)wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH)窗口背景為白色wndclass.lpszMenuName=NULL窗口中無菜單wndclass.lpszClassName=“SIN“窗口類名為“窗口“wndclass.hIcon=LoadIcon(NUL

5、LIDI_APPLICATION)窗口的最小化圖標(biāo)為缺省圖標(biāo)wndclass.lpfnWndProc=WndProc定義窗口處理函數(shù)caseWM_PAINT:處理繪圖消息hDC=BeginPaint(hWndSetWindowgEx(hDC200200NULL)設(shè)置映像模式hPen=CreatePen(PS_DASH1RGB(25500))黑色畫筆Object(hDChPen)選擇畫筆Polyline(hDClpSin100)if(i=

6、25)第一個(gè)14周期hPen=CreatePen(PS_DASH1RGB(25500))hBrush=CreateHatchBrush(HS_BDIAGONALRGB(25500))lRadious=(long)(dfRange0.2i%25dfRange0.425)計(jì)算半徑elseif(i=50)hPen=CreatePen(PS_DASH1RGB(02550))hBrush=CreateHatchBrush(HS_BDIAGONAL

7、RGB(02550))lRadious=(long)(dfRange0.2i%25dfRange0.425)計(jì)算半徑elseif(i=75)hPen=CreatePen(PS_DASH1RGB(00255))hBrush=CreateHatchBrush(HS_BDIAGONALRGB(00255))lRadious=(long)(dfRange0.2i%25dfRange0.425)計(jì)算半徑elsehPen=CreatePen(PS_

8、DASH1RGB(2552550))hBrush=CreateHatchBrush(HS_BDIAGONALRGB(2552550))lRadious=(long)(dfRange0.2i%25dfRange0.425)計(jì)算半徑Object(hDChBrush)選擇畫刷Object(hDChPen)lCentreX=lpSin[i].x圓心x坐標(biāo)lCentreY=lpSin[i].y圓心y坐標(biāo)Ellipse(hDClCentreXlRa