C++编程绘图.docx

1、C+编程绘图VC+编程绘图161编写在屏幕上绘制桁架示意图的程序，不注尺寸，大致安放在屏幕中央。在void CMy161View:OnDraw(CDC* pDC)中添加如下程序代码： int i; POINT pp13=-160,0,-160,-40,-80,0,-80,-80,0,0,80,-80,80,0,160,-40,160,0,240,0,0,-120,-240,0,240,0; CRect rc; GetClientRect(&rc); int x0,y0; x0=(int)rc.right/2;y0=(int)rc.bottom/2; pDC-SetViewportOrg(x0,

2、y0); pDC-MoveTo(pp0); for(i=0;iLineTo(ppi); pDC-MoveTo(pp10); pDC-LineTo(pp4);图形输出如下：16-2：15个不同颜色和半径的圆彼此相切于公共点（300，100），最小圆的半径为10，其余各圆的半径按级差10递增。分析圆心的变化规律，并绘制该图的程序。在void CMy162View:OnDraw(CDC* pDC)中添加如下程序代码：CPen *pPen,*pOldPen; CPoint p1(290,100),p2(310,120); int i; int rgb15=RGB(0,0,0),RGB(0,0,255)

3、,RGB(0,0,128),RGB(0,255,0),RGB(0,128,0),RGB(0,255,255),RGB(0,128,128),RGB(255,0,0),RGB(128,0,0),RGB(255,0,255),RGB(128,0,128),RGB(255,255,0),RGB(128,128,0),RGB(128,128,128),RGB(192,192,192); for(i=0;iSelectObject(pPen); pDC-SelectStockObject(NULL_BRUSH); pDC-Ellipse(CRect(p1,p2); p1.Offset(-10,0); p

4、2.Offset(10,20); pDC-SelectObject(pOldPen); delete pPen; 输出图形如下：16-3：编写绘制五角星的程序，10个顶点的坐标按等分大，小圆周通过计算得到，R1=100，R2=38.2在void CMy163View:OnDraw(CDC* pDC)中添加如下程序代码： double x11=0,y11=0; int i,j; CRect rc; GetClientRect(&rc); pDC-SetViewportOrg(rc.right/2,rc.bottom/2); for (i=1;i=9;i+=2) xi=100*cos(1.5708

5、+(i-1)*2*3.141592654/10); yi=-100*sin(1.5708+(i-1)*2*3.141592654/10); x11=x1;y11=y1; for (j=2;jMoveTo (int)x1,(int)y1); for (i=1;iLineTo (int)xi,(int)yi); for(i=1;iMoveTo (int)xi,(int)yi); pDC-LineTo (int)xj,(int)yj); 并在程序的预处理部分添加函数头#include math.h。程序图形输出如下： 16-4：编程绘制钢结构构件断面图程序,不注尺寸.在void CMy164View

6、:OnDraw(CDC* pDC)中添加如下程序代码： int x0,y0,i; CRect rc; GetClientRect(&rc); x0=(int)rc.right/2; y0=(int)rc.bottom/2; pDC-SetViewportOrg(x0,y0); POINT pp6=-5,0,-5,-100,5,-100,5,0,85,0,-85,0; pDC-MoveTo(pp0); for(i=0;iLineTo(ppi); CRect r1(-85,-10,-65,10); CRect r2(65,-10,85,10); CRect r3(-15,-80,5,-60); C

7、Rect r4(-5,-80,15,-60); POINT p8=-75,-10,-15,-70,-5,-80,5,-80,15,-70,75,-10,-15,-10,15,-10; pDC-MoveTo(p0); pDC-Arc(r1,p0,pp5); pDC-MoveTo(pp4); pDC-Arc(r2,pp4,p5); pDC-MoveTo(p2); pDC-Arc(r3,p2,p1); pDC-MoveTo(p4); pDC-Arc(r4,p4,p3); pDC-MoveTo(p0); pDC-LineTo(p6); pDC-LineTo(p1); pDC-MoveTo(p4); p

8、DC-LineTo(p7); pDC-LineTo(p5);图形输出如下： 16-5：编写月亮门的程序在void CMy165View:OnDraw(CDC* pDC)中添加如下程序代码：CRect rc; GetClientRect(&rc); int x0,y0; x0=(int)rc.right/2; y0=(int)rc.bottom/2; pDC-SetViewportOrg(x0,y0); int i; POINT p6=-82.91561976,-125,-280,-125,-280,100,280,100,280,-125,82.91561976,-125; pDC-MoveT

9、o(p0); for(i=0;iLineTo(pi); CRect r1(-150,-150,150,150); pDC-MoveTo(p5); pDC-Arc(r1,p5,p0); POINT pp4=-60,80,-60,100,60,100,60,80; pDC-MoveTo(pp0); for(i=0;iLineTo(ppi); CRect r2(-100,-100,100,100); pDC-MoveTo(pp3); pDC-Arc(r2,pp3,pp0);图形输出如下： 16-6：由同心的半圆和椭圆弧组成,设R=70,椭圆长半径为140短半径为50在void CMy166View:

10、OnDraw(CDC* pDC)中添加如下程序代码： CRect rc;GetClientRect(&rc);pDC-SetViewportOrg(rc.right/2,rc.bottom/2);int a,b;a=140;b=50;pDC-Arc(-70,70,70,-70,70,0,-70,0);int i;double dt,xf,yf,phi,x,y,theta;dt=.01745;x=xp(0);y=yp(0);pDC-MoveTo(x,y);for(i=1;i=360;i+) phi=i*dt; xf=a*cos(phi);yf=b*sin(phi); if(yf0&sqrt(xf

11、*xf+yf*yf)SelectStockObject(NULL_PEN); else pDC-SelectStockObject(BLACK_PEN); x=xp(phi); y=yp(phi);pDC-LineTo(x,y);并在程序预处理理部分添加函数头和宏定义：#include math.h#define xp(phi) a*cos(phi)#define yp(phi) b*sin(phi)图形输出如下： 16-7：编程绘制球面及其上均匀分布的经线和纬线的正面投影.在void CMy167View:OnDraw(CDC* pDC)中添加如下程序代码：CRect rc; GetClie

12、ntRect(&rc); int x0,y0,i; x0=(int)rc.right/2; y0=(int)rc.bottom/2; pDC-SetViewportOrg(x0,y0); double x1,y1; x1=100*pow(3,.5)/2;y1=100; int x2,y2; x2=(int)x1;y2=(int)y1; pDC-Ellipse(-100,-100,100,100); pDC-Ellipse(-x2,-y2,x2,y2); pDC-Ellipse(-50,-100,50,100); POINT p12=0,100,-50,x2,-x2,50,-100,0,-x2,

13、-50,-50,-x2,0,-100,50,x2,x2,50,100,0,x2,-50,50,-x2; for(i=0;iMoveTo(pi); pDC-LineTo(pi+6);并在图形的预处理部分添加函数头#include math.h图形输出如下： 16-8：在void CMy168View:OnDraw(CDC* pDC)中添加如下程序代码：int x0,y0,x,y,s1=120; double r,theta; CRect rc; GetClientRect (&rc); x0=rc.right/2;y0=rc.bottom/2; pDC-SetMapMode(MM_LOMETRI

14、C); pDC-SetViewportOrg(int)x0,(int)y0); for(theta=0;thetaMoveTo(0,0); pDC-LineTo(x,y); 并在程序的预处理部分添加函数头和宏定义：#includemath.h#define R(theta) cos(1.5*theta)*s1图形输出如下： 16-9：对百叶窗正面图的程序进行改造.在void CMy169View:OnDraw(CDC* pDC)中添加如下程序代码：int i; double dt=0.01745,x,y,x0,y0,a,b,xc,yc,phi,x1,y1,a1,b1; phi=45*dt; C

15、Rect rc; GetClientRect (&rc); x0=rc.right/2;y0=rc.bottom/2; pDC-SetViewportOrg(int)x0,(int)y0); xc=0;yc=0; pDC-Ellipse(-150,-150,150,150); pDC-Ellipse(-140,-140,140,140); for(i=0;iMoveTo(x,y); pDC-LineTo(a,b); for(i=0;iMoveTo(x,y); pDC-LineTo(a,b); 并在程序的预处理部分添加函数头和宏定义：#includemath.h#define xp(x,y) c

16、os(phi)*x+sin(phi)*y+xc#define yp(x,y) cos(phi)*y-sin(phi)*x+yc程序图形输出如下： 16-10：错切系数为0.4,试编写根据左图画成右图的程序.在void CMy1610View:OnDraw(CDC* pDC)中添加如下程序代码：int i; double s1=1.5,x,x0,y0; CRect rc; GetClientRect (&rc); x0=rc.right/2;y0=rc.bottom/2; pDC-MoveTo(fnx(0),fny(0,0); pDC-LineTo(fnx(200),fny(200,0); pD

17、C-MoveTo(fnx(0),fny(0,65); pDC-LineTo(fnx(200),fny(200,65); for(i=1;iMoveTo(fnx(x),fny(x,65); pDC-LineTo(fnx(x),fny(x,-25); for(i=1;iMoveTo(fnx(x),fny(x,65); pDC-LineTo(fnx(x),fny(x,0);并在程预处理部分添加函数头和宏定义：#includemath.h#define fnx(x) (int)(x0+(x)*s1)#define fny(x,y) (int)(y0-(y+0.4*x)*s1)程序图形输出如下： 16-

18、11：编写绘制图形程序.在void CMy1611View:OnDraw(CDC* pDC)中添加如下程序代码：int j; double dt=0.01745,s1=1.0,x,y,x0,y0,a,b,c,s,xc,yc,phi,theta,i; CRect rc; GetClientRect (&rc); x0=rc.right/2;y0=rc.bottom/2; a=100;b=40;xc=0;yc=0; for(i=0;iMoveTo(fnx(x),fny(y); for(j=1;jLineTo(fnx(x),fny(y);并在程序的预处理部分添加函数头和宏定义：#includemat

19、h.h#define fnx(x) (int)(x0+(x)*s1)#define fny(y) (int)(y0-(y)*s1)#define xp(phi) cos(phi)*a*c-sin(phi)*b*s+xc#define yp(phi) cos(phi)*a*s+sin(phi)*b*c+yc程序输出图形如下： 16-12：编程绘制大门在预处理部分添加宏定义：#define fnx(x) (int)(x0+(x)*s*s1)#define fny(x) (int)(y0-(x)*s1)添加变量：int i,x0,y0,s; double s1;添加函数：draw( );在自定义函数

20、部分添加程序代码如下：int i; CClientDC dc(this); dc.MoveTo(fnx(0),fny(50); dc.LineTo(fnx(300),fny(50); dc.Rectangle(fnx(165),fny(50),fnx(215),fny(250); dc.Rectangle(fnx(155),fny(250),fnx(225),fny(260); dc.Arc(fnx(190-25),fny(260-25),fnx(190+25),fny(260+25),x0+300,fny(260),x0-300,fny(260); dc.MoveTo(fnx(215),fny(55); dc.LineTo(fnx(300),fny(55); dc.MoveTo(fnx(215),fny(190); dc.LineTo(fnx(300),fny(190); dc.MoveTo(fnx(215),fny(195); dc.LineTo(fnx(300),fny(195); for(i=1;iTextOut(x,y,w); s=1;s1=.5; draw(); s=-s; draw();程序图形输出如下：