計(jì)算機(jī)圖形學(xué)報(bào)告

1、計(jì)算機(jī)圖形學(xué)項(xiàng)目名稱：動(dòng)態(tài)鐘表學(xué)生姓名：學(xué)生學(xué)號：完成日期：目 錄一、項(xiàng)目描述3 1.1任務(wù)描述3 1.2效果圖3二、原理分析4三、算法設(shè)計(jì)4四、部分源代碼5五、項(xiàng)目總結(jié)7一、項(xiàng)目描述1.1任務(wù)描述制作與系統(tǒng)時(shí)間同步的鐘表,并且時(shí)鐘可以在窗口中移動(dòng)當(dāng)碰到邊界時(shí)會(huì)反彈1.2效果圖程序一打開如上圖，點(diǎn)擊按鈕以后出現(xiàn)鐘表的初始圖案隨著時(shí)間的變化時(shí)鐘移動(dòng)到下圖位置二、原理分析1. 運(yùn)用getcurrenttime（）函數(shù)讀取系統(tǒng)時(shí)間，提取出時(shí)、分、秒確定相應(yīng)的角度來繪制鐘表的時(shí)針、分針、秒針2. 引入圓心xf，yf的坐標(biāo)和xsudu，ysudu兩個(gè)方向的速度，運(yùn)用公式xf+=xsudu;yf+=ysu

2、du;實(shí)現(xiàn)坐標(biāo)與速度的轉(zhuǎn)換，然后在ontimer（）調(diào)用公式來讓整個(gè)時(shí)鐘運(yùn)動(dòng)3創(chuàng)建bianjie（）函數(shù)來判斷鐘表是否碰到了窗口的邊界三、算法設(shè)計(jì)創(chuàng)建drawobject模塊實(shí)現(xiàn)鐘表的繪制，然后在doublebuffer雙緩沖模塊中調(diào)用drawobject函數(shù)，最后在ontimer函數(shù)中調(diào)用doublebuffer函數(shù)四、部分源代碼一、繪制鐘表代碼void cliumingview:drawobject(cdc *pdc)cpen ph,pm,ps,*oldpen;/定義時(shí)分秒三個(gè)畫筆ph.createpen(ps_solid,3,rgb(0,0,0);pm.createpen(ps_soli

3、d,3,rgb(0,0,0);ps.createpen(ps_solid,1,rgb(255,0,0); cbrush brush,*oldbrush;brush.createsolidbrush(rgb(255,0,0);oldbrush=pdc-selectobject(&brush);pdc-rectangle(xf-250,yf+250,xf+250,yf-250);/繪制紅色矩形框pdc-selectobject(oldbrush);pdc-selectobject(&ph);pdc-ellipse(xf-200,yf+200,xf+200,yf-200);/繪制鐘表的輪廓pdc-t

4、extout(xf-5,yf+195,12);pdc-moveto(xf,yf+180);pdc-lineto(xf,yf+150);pdc-textout(xf+180,yf+5,3);pdc-moveto(xf+175,yf);pdc-lineto(xf+145,yf);pdc-textout(xf-3,yf-180,6);pdc-moveto(xf,yf-175);pdc-lineto(xf,yf-145);pdc-textout(xf-195,yf+5,9);pdc-moveto(xf-185,yf);pdc-lineto(xf-155,yf);for(int i=0;imoveto(

5、xf+(double)150*sin(thta),yf+(double)150*cos(thta); pdc-lineto(xf+(double)180*sin(thta),yf+(double)180*cos(thta);for(int j=0;jselectobject(&ps);pdc-moveto(xf+(double)170*sin(beta),yf+(double)170*cos(beta); pdc-lineto(xf+(double)180*sin(beta),yf+(double)180*cos(beta); double h,m,s;/定義時(shí)分秒的角度s=count*(pi

6、/30);ctime t = ctime:getcurrenttime(); count=t.getsecond();pdc-moveto(xf,yf);/繪制秒針oldpen=pdc-selectobject(&ps);pdc-lineto(xf+(double)sin(s)*185,yf+(double)cos(s)*185);m=t.getminute()*(pi/30);/繪制分針pdc-selectobject(&pm);pdc-moveto(xf,yf);pdc-lineto(xf+(double)sin(m)*195,yf+(double)cos(m)*195);h=t.geth

7、our();/繪制時(shí)針if(h12)h=h-12;h=h*(pi/6)+t.getminute()*pi/360;pdc-selectobject(&ph);pdc-moveto(xf,yf);pdc-lineto(xf+(double)sin(h)*160,yf+(double)cos(h)*160);pdc-selectobject(oldpen);cstring str;/電子表表示時(shí)間 str.format(%d:%d:%d,t.gethour(),t.getminute(),t.getsecond();pdc-textout(xf-220,yf+150,str);二、邊界碰撞模塊代碼void cliumingview:bianjie()crect rect;getclientrect(&rect);if(xf-250=rect.top)/上ysudu=-ysudu;if(yf-250=rect.right)/右xsudu=-xsudu;五、項(xiàng)目總結(jié)1.編寫目的 這份項(xiàng)目開發(fā)用做對整個(gè)cg學(xué)習(xí)的實(shí)際練兵并且作為結(jié)課的最終任務(wù)。2背景a項(xiàng)目名稱：動(dòng)態(tài)鐘表b任務(wù)提出者和開發(fā)者：劉銘3.參考文獻(xiàn)計(jì)算機(jī)圖形學(xué)基礎(chǔ)教程孔令德visual c+應(yīng)用教程鄭阿奇、丁有和4.進(jìn)度原計(jì)劃進(jìn)度：7天