Question

我创建了以下代码，用于映射弹跳球的轨迹。我正在尝试创建一个沿着轨迹移动的点。代码有效，但动画无法播放。

请记住，我是一名本科生，代码并不优雅。（如果您有改进我的代码的提示或让我朝着新的方向前进，请不要害怕建议。）

如何让动画工作？

    syms xdis(t1) ydis(t1) ydis1(t1) xdis1(t1) xdis2(t1) ydis2(t1) xdis3(t1)...
    ydis3(t1) xdis4(t1) ydis4(t1) xdis5(t1) ydis5(t1) xdis6(t1) ydis6(t1)

dt = 0.05; 
tmax = 6; 
t = 0:dt:tmax ;

height=10;
velocity=12;
angle=0;
g=-9.8;
xpos = 0 ;                     
ypos = height;                 
xvel = velocity*cosd(angle);    
yvel = velocity*sind(angle);
xdis(t1)= xvel*t1+xpos;
ydis(t1)=yvel*t1+0.5*g*t1^2+ypos;

troot1=solve(ydis(t1)==0,t1);
troot11=vpa(troot1(1));
troot12=vpa(troot1(2));


dydis(t1)=diff(ydis(t1),t1);
p=solve(dydis(t1)==0,t1);
h=vpa(ydis(p));


i1=vpa(dydis(troot11));

yvel1=0.7*i1;
ypos1=0;
ydis1(t1)=yvel1*t1+0.5*g*t1^2;
xdis1(t1)=xvel*t1+xdis(vpa(troot12));

troot2=solve(ydis1(t1)==0,t1);
troot21=(troot2(1));
troot22=(troot2(2));

dydis1(t1)=diff(ydis1(t1),t1);
p1=solve(dydis1(t1)==0,t1);
i2=vpa(dydis1(troot21));
yvel2=0.7*i2;

ydis2(t1)=yvel2*t1+0.5*g*t1^2+ypos1;
xdis2(t1)=xvel*t1+vpa(xdis1(troot22));

troot3=solve(ydis2(t1)==0,t1);
troot31=troot3(1);
troot32=troot3(2);

dydis2(t1)=diff(ydis2(t1),t1);
p2=solve(dydis2(t1)==0,t1);
i3=vpa(dydis2(troot31));
yvel3=0.7*i3;

ydis3(t1)=yvel3*t1+0.5*g*t1^2+ypos1;
xdis3(t1)=xvel*t1+vpa(xdis2(troot32));

troot4=solve(ydis3(t1)==0,t1);
troot41=troot4(1);
troot42=troot4(2);

dydis3(t1)=diff(ydis3(t1),t1);
p2=solve(dydis3(t1)==0,t1);
i4=vpa(dydis3(troot41));
yvel4=0.7*i4

ydis4(t1)=yvel4*t1+0.5*g*t1^2+ypos1;
xdis4(t1)=xvel*t1+vpa(xdis3(troot42));

troot5=solve(ydis4(t1)==0,t1);
troot51=troot5(1);
troot52=troot5(2);

dydis4(t1)=diff(ydis4(t1),t1);
p2=solve(dydis4(t1)==0,t1);
i5=vpa(dydis4(troot51));
yvel5=0.7*i5;

ydis5(t1)=yvel5*t1+0.5*g*t1^2+ypos1;
xdis5(t1)=xvel*t1+vpa(xdis4(troot52));

troot6=solve(ydis5(t1)==0,t1);
troot61=troot6(1);
troot62=troot6(2);



o=troot12-0; %% xdis(1) ydis(1)
o1=troot22-troot21; %% xdis1 ydis1
o2=troot32-troot31; %% xdis2 ydis2
o3=troot42-troot41; %% xdis3 ydis3
o4=troot52-troot51; %% xdis4 xdis4
o5=troot62-troot61;

int1=o;
int2=o+o1;
int3=o+o1+o2;
int4=o+o1+o2+o3;
int5=o+o1+o2+o3+o4;
int6=o+o1+o2+o3+o4+o5;


kt=0.05;
kmax=6;
k=0;
while k<kmax
    if 0<=k && k<=int1
    s1(k/0.05+1)=vpa(xdis(k));
    s2(k/0.05+1)=vpa(ydis(k));
    elseif int1<k && k<=int2
    s1(k/0.05+1)=vpa(xdis1(k-int1));
    s2(k/0.05+1)=vpa(ydis1(k-int1));
    elseif int2<k && k<=int3
    s1(k/0.05+1)=vpa(xdis2(k-int2));
    s2(k/0.05+1)=vpa(ydis2(k-int2));
    elseif int3<k && k<=int4
    s1(k/0.05+1)=vpa(xdis3(k-int3));
    s2(k/0.05+1)=vpa(ydis3(k-int3));
    elseif int4<k && k<=int5
    s1(k/0.05+1)=vpa(xdis4(k-int4));
    s2(k/0.05+1)=vpa(ydis4(k-int4));
    elseif int5<k && k<=int6
    s1(k/0.05+1)=vpa(xdis5(k-int5));
    s2(k/0.05+1)=vpa(ydis5(k-int5));
    end
    k=k+kt;
end


figure(1)
for t=1:1:length(s2)
plots{t}=plot(s1(t),s2(t),'ro','MarkerSize',10);
axis([0 xvel*6 0 h])
pause(0.001)
end

Answer 1

如果要在函数syntax

中使用它，则需要将符号变量

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转换为double

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1 个答案: