一个很好玩的MATLAB动画程序

 阿杰去年暑假学习MATLAB用到了很多很有用很有意思的资源，其中就有一个用MATLAB编的很好玩的碰球动画，很好的体现了MATLAB的强大功能。
下面是这个碰球动画的MATLAB的源程序，大家也可以用来耍耍，体验体验！
 
   figure(1);%定义函数
    axis([-5.1,5,-0.05,1.05]);%绘制二维图形
    hold on;%保持当前图形及轴系所有的特性
    axis('off');%覆盖坐标刻度，并填充背景
    %通过填充绘出台阶及两边的挡板
    fill([-5.1,-5,-5,-5.1],[-0.05,-0.05,1.05,1.05],[0,0.5,0]);
    fill([4.12,4.22,4.22,4.12],[-0.05,-0.05,1.05,1.05],[0,0.5,0]);
    fill([-5,-3.2,-3.2,-5],[-0.05,-0.05,0,0],[0,0.5,0]);
    fill([-3.2,-2.8,-2.8,-3.2],[-0.05,-0.05,0.2,0.2],[0,0.5,0]);
    fill([-3.2,-1.4,-1.4,-3.2],[0.2,0.2,0.25,0.25],[0,0.5,0]);
    fill([-1.4,-1,-1,-1.4],[0.2,0.2,0.45,0.45],[0,0.5,0]);
    fill([-1.4,0.4,0.4,-1.4],[0.45,0.45,0.5,0.5],[0,0.5,0]);
    fill([0.4,0.8,0.8,0.4],[0.45,0.45,0.7,0.7],[0,0.5,0]);
    fill([0.4,2.0,2.0,0.4],[0.7,0.7,0.75,0.75],[0,0.5,0]);
    fill([2.0,2.3,2.3,2.0],[-0.05,-0.05,0.75,0.75],[0,0.5,0]);
    fill([2.3,4.12,4.12,2.3],[-0.05,-0.05,0,0],[0,0.5,0]);
    %x1=line([-5,5],[0,0],'color','g','linestyle','-', 'markersize',50)%设置台阶边框线，颜色，擦试方式
    %x2=line([-5,5],[0.25,0.25],'color','g','linestyle','-', 'markersize',50)%设置台阶边框线，颜色，擦试方式
    %line([-5,5],[0.5,0.5],'color','b','linestyle','-', 'markersize',50)%设置球与地面接触面的颜色，擦试方式
    %line([-5,5],[0.75,0.75],'color','b','linestyle','-', 'markersize',50)%设置球与地面接触面的颜色，擦试方式
    head=line(-5,1,'color','r','linestyle','.','erasemode','xor', 'markersize',60);%设置小球颜色，大小，线条和擦试方式
    %body=line(-5,1,'color','b','linestyle','-','erasemode','none'); %描绘轨迹线
    %设置初始条件
    t=-5;
    dt=0.001;
    w=0;
    dw=0.001;
    while 1 %设置球跳到第一台阶的范围和高度
        while t<=-4
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=-w*w+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-1;%设置球弹起的初始位置
        %设置球跳到第二台阶的范围和高度
        while t<=-2.31
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+0.5;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-1;%设置球弹起的初始位置
        %设置球跳到第三台阶的范围和高度
        while t<=-0.62
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+0.75;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-1;%设置球弹起的初始位置
        %设置球跳到第四台阶的范围和高度
        while t<=1.1
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-1;%设置球弹起的初始位置
        %设置球跳到第五台阶的范围和高度
        while t<=2.11
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/4+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=0;%设置球弹起的初始位置
        %设置球弹起的高度
        while t<=4.12
            t=dt+t;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=0;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=2.11
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=0;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=1.11
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/4+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-0.71;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=-0.62
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-0.71;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=-2.31
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+0.75;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-0.71;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=-4
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)/2+0.5;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
        w=-1;%设置球弹起的初始位置
        %设置球弹起的高度
        while t>=-5
            t=t-dt;
            if w<=1
                w=dw+w;
            else
                w=-1;
            end
            y=(-w*w)+1;
            set(head,'xdata',t,'ydata',y);%设置球的运动
            %set(body,'xdata',t,'ydata',y);%描绘轨迹线
            drawnow;
        end %结束程序
    end

下面是程序运行出来的一个截图

 

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