計算機(jī)圖形學(xué)第三次實驗報告

精選優(yōu)質(zhì)文檔-----傾情為你奉上精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)專心---專注---專業(yè)精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)計算機(jī)圖形學(xué)第三次實驗報告姓名所使用的語言Java學(xué)號完成日期16/12/3實驗任務(wù)11、已知第55頁Bresenham可以繪制1/4圓，請利用旋轉(zhuǎn)變換繪制完整圓importjava.applet.*;importjava.awt.*;importjava.awt.geom.*;importjavax.swing.*; publicclassBresenhamextendsApplet {publicvoidpaint(Graphicsg) {Graphics2Dg2=(Graphics2D)g; g2.setPaint(Color.red); intr=100,x,y,e,x1,y1; doublexx,yy; x=0;y=r;e=1-r; while(x<y) {g.setColor(Color.RED); if(e<0) {e=e+2*x+3;x++;} else {e=e+2*(x-y)+5;x++;y=y-1;} g.fillRect(x+200,y+200,1,1); xx=0.7071*x+0.7071*y;yy=-0.7071*x+0.7071*y; x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); x1=y;y1=-x;g.fillRect(x1+200,y1+200,1,1); x1=-y;y1=x;g.fillRect(x1+200,y1+200,1,1); xx=0.7071*x-0.7071*y;yy=0.7071*x+0.7071*y; x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); xx=-0.707*x+0.707*y;yy=-0.707*x-0.707*y; x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); x1=-x;y1=-y;g.fillRect(x1+200,y1+200,1,1); xx=-0.707*x-0.707*y;yy=0.707*x-0.707*y; x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); } } }2、已知第57頁中點算法可以繪制1/4橢圓，請利用旋轉(zhuǎn)變換繪制完整橢圓importjava.applet.*;importjava.awt.*;importjava.awt.geom.*;importjavax.swing.*;publicclassmid_circleextendsApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g; g2.setPaint(Color.red);intr=100,x,y,e,x1,y1;doublexx,yy;x=0;y=r;e=2*(1-r);while(x<y){g.setColor(Color.RED);if(e<0){e=e+2*x+3;x++;}Else{e=e+2*(x-y)+5;x++;y=y-1;}g.fillRect(x+200,y+200,1,1);xx=0.7071*x+0.7071*y;yy=-0.7071*x+0.7071*y;x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1);x1=y;y1=-x;g.fillRect(x1+200,y1+200,1,1);x1=-y;y1=x;g.fillRect(x1+200,y1+200,1,1); xx=0.7071*x-0.7071*y;yy=0.7071*x+0.7071*y;x1=(int)(xx;y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1);xx=-0.707*x+0.707*y;yy=-0.707*x-0.707*y;x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); x1=-x;y1=-y;g.fillRect(x1+200,y1+200,1,1);xx=-0.707*x-0.707*y;yy=0.707*x-0.707*y; x1=(int)(xx);y1=(int)(yy);g.fillRect(x1+200,y1+200,1,1); } } }實驗任務(wù)2:將一矩形平移x=200,y=200,并將x縮小1/5的程序importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjava.awt.geom.Rectangle2D;importjavax.swing.JApplet;publicclassaextendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g;intx[]={20,220,220,20,20},y[]={100,100,200,200,100};g2.drawPolyline(x,y,5);for(inti=0;i<x.length;i++){x[i]=x[i]+200;y[i]=y[i]+200;g2.setColor(Color.RED);}for(inti=0;i<x.length;i++){ x[i]=x[i]/5; g2.setColor(Color.blue);} g2.drawPolyline(x,y,5); } }實驗任務(wù)3:將一矩形完成以下變換矩陣工作importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjavax.swing.JApplet;publicclassjihebianhuanextendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g; intx[]={40,100,100,40,40},y[]={80,80,140,140,80};g2.drawPolyline(x,y,5);for(inti=0;i<x.length;i=i+5){x[i]=x[i]/2-y[i]+200;x[i+1]=x[i+1]/2-y[i+1]+200;x[i+2]=x[i+2]/2-y[i+2]+200;x[i+3]=x[i+3]/2-y[i+3]+200;x[i+4]=x[i+4]/2-y[i+4]+200;y[i]=x[i]*2/3+y[i]*2+200;y[i+1]=x[i+1]*2/3+y[i+1]*2+200;y[i+2]=x[i+2]*2/3+y[i+2]*2+200;y[i+3]=x[i+3]*2/3+y[i+3]*2+200;y[i+4]=x[i+4]*2/3+y[i+4]*2+200;g2.setColor(Color.RED);}g2.drawPolyline(x,y,5);}}實驗任務(wù)4:給出任意三角形進(jìn)行幾何變換importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjavax.swing.JApplet;publicclasssanjiaoxingextendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g;intx[]={15,60,30,15},y[]={30,30,60,30};g2.drawPolyline(x,y,4);for(inti=0;i<x.length;i=i+4){x[i]=x[i]*2-y[i]+20;x[i+1]=x[i+1]*2-y[i+1]+20;x[i+2]=x[i+2]*2-y[i+2]+20;x[i+3]=x[i+3]*2-y[i+3]+20;y[i]=x[i]/3+y[i]*2-10;y[i+1]=x[i+1]/3+y[i+1]*2-10;y[i+2]=x[i+2]/3+y[i+2]*2-10;y[i+3]=x[i+3]/3+y[i+3]*2-10;g2.setColor(Color.RED);}g2.drawPolyline(x,y,4);}}實驗任務(wù)5:完成下面幾何變換為一單位正方形,對由(0,0)和(1,1)兩點構(gòu)成的對角線方向?qū)嵤┍壤儞Q(1,2).importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjavax.swing.JApplet;publicclasszhengfangxingextendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g;intx[]={100,200,200,100,100},y[]={100,100,200,200,100};g2.drawPolyline(x,y,5);for(inti=0;i<x.length;i=i+5){x[i]=(int)(x[i]*0.707-y[i]*0.707)+100;x[i+1]=(int)(x[i+1]*0.707-y[i+1]*0.707)+100;x[i+2]=(int)(x[i+2]*0.707-y[i+2]*0.707)+100;x[i+3]=(int)(x[i+3]*0.707-y[i+3]*0.707)+100;x[i+4]=(int)(x[i+4]*0.707-y[i+4]*0.707)+100;y[i]=(int)(x[i]*0.707+y[i]*0.707)+100;y[i+1]=(int)(x[i+1]*0.707+y[i+1]*0.707)+100;y[i+2]=(int)(x[i+2]*0.707+y[i+2]*0.707)+100;y[i+3]=(int)(x[i+3]*0.707+y[i+3]*0.707)+100;y[i+4]=(int)(x[i+4]*0.707+y[i+4]*0.707)+100;g2.setColor(Color.RED);}g2.drawPolyline(x,y,5);}}實驗任務(wù)6:對于四邊形ABCD頂點坐標(biāo)為A(0,0),B(20,0),C(20,15),D(0,15)1)沿x軸方向縮小一半，y軸增長一倍繪圖；importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjavax.swing.JApplet;publicclassjuxing1extendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g;intx[]={100,200,200,100,100},y[]={100,100,150,150,100};g2.drawPolyline(x,y,5);g2.drawPolyline(x,y,5);}2)將四邊形ABCD沿x軸平移100,y軸平移100,然后旋轉(zhuǎn)450繪圖;importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjavax.swing.JApplet;publicclassjuxing2extendsJApplet{publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g;intx[]={100,200,200,100,100},y[]={100,100,150,150,100};g2.drawPolyline(x,y,5);for(inti=0;i<x.length;i=i+5){x[i]=(int)(x[i]*0.707-y[i]*0.707)+100;x[i+1]=(int)(x[i+1]*0.707-y[i+1]*0.707)+100;x[i+2]=(int)(x[i+2]*0.707-y[i+2]*0.707)+100;x[i+3]=(int)(x[i+3]*0.707-y[i+3]*0.707)+100;x[i+4]=(int)(x[i+4]*0.707-y[i+4]*0.707)+100;y[i]=(int)(x[i]*0.707+y[i]*0.707)+100;y[i+1]=(int)(x[i+1]*0.707+y[i+1]*0.707)+100;y[i+2]=(int)(x[i+2]*0.707+y[i+2]*0.707)+100;y[i+3]=(int)(x[i+3]*0.707+y[i+3]*0.707)+100;y[i+4]=(int)(x[i+4]*0.707+y[i+4]*0.707)+100;g2.setColor(Color.blue);}g2.drawPolyline(x,y,5);}}將四邊形ABCD沿y軸平移100,然后將四邊形沿y=60作軸對稱并繪圖。