TenSimPlot.m

function TenSimPlot(Q,p,U,V,outer,fac,fac1)
% By Thomas Bewley, UCSD and JPL (summer/fall 2019)

% INPUTS
% Q=Q_(dim x q)=locations of free nodes
% p=constant parameters (see list below)
% U=U_(dim x q)=OPTIONAL argument, external force vector at each free node
% V=U_(dim x p)=OPTIONAL argument, reaction force vector at each fixed node
% fac =OPTIONAL argument, 
% fac1=OPTIONAL argument,

% PARAMETERS USED IN THIS FUNCTION THAT ARE PASSED IN WITH p:
C=p.C;         % C_(m x p)=connectivity matrix
P=p.P;         % P_(dim x p)=locations of fixed nodes
b=p.b_statics; % number of bars (including solid bodies modelled as bars)
s=p.s;         % number of strings
structure=p.structure; 

[dim,q]=size(Q); pp=size(P,2); N=[Q P]; [M,I]=max(C'); [M,J]=min(C'); hold on

if dim==2
    for k=1:b,     plot([N(1,I(k)) N(1,J(k))],[N(2,I(k)) N(2,J(k))],'r-','LineWidth',2), end
    for k=b+1:b+s, plot([N(1,I(k)) N(1,J(k))],[N(2,I(k)) N(2,J(k))],'b-','LineWidth',2), end
else
    for k=1:b,     plot3([N(1,I(k)) N(1,J(k))],[N(2,I(k)) N(2,J(k))],[N(3,I(k)) N(3,J(k))],'r-','LineWidth',2), end
    for k=b+1:b+s, plot3([N(1,I(k)) N(1,J(k))],[N(2,I(k)) N(2,J(k))],[N(3,I(k)) N(3,J(k))],'k-','LineWidth',2), end
    view(p.az,p.el)
end
axis equal, % set(gca,'YTickLabel',[]); set(gca,'XTickLabel',[]); set(gca,'ZTickLabel',[]);

range(1)=max(N(:,1))-min(N(:,1)); range(2)=max(N(:,2))-min(N(:,2));
t=(0:1/3:1)'*2*pi; x=sin(t); y=cos(t);
if dim==2
    y=y-1;
else
    X=[0 x(1) x(2) x(3)]';  range(3)=max(N(:,3))-min(N(:,3));
    Y=[0 y(1) y(2) y(3)]';  h=sqrt(6)/3;
    Z=[0 -h -h -h]';        T=[1 2 3; 1 2 4; 2 3 4; 1 3 4];
end
s=max(range)*.02;
% for i=1:p   % Draw a symbol below each ground point.
%    if dim==2, fill(s*x+P(1,i),s*y+P(2,i),'r')         % An equilateral triangle
%    else trisurf(T,s*X+P(1,i),s*Y+P(2,i),s*Z+P(3,i),0) % A tetrahedron
%    end
% end
if nargin<5, outer=false; end, if nargin<6, fac=1; end, if nargin<7, fac1=1; end
if nargin>2
    for i=1:q, force_mag(i)=norm(U(:,i)); end, s=fac*s*10/max(force_mag);
    for i=1:q, if dim==3
            if outer
                mArrow3(Q(:,i)-s*U(:,i),Q(:,i),'facealpha',0.5,'color','magenta','tipWidth',s*fac1);
            else
                mArrow3(Q(:,i),Q(:,i)+s*U(:,i),'facealpha',0.5,'color','magenta','tipWidth',s*fac1);
            end
        else
            if outer
                h=quiver(Q(1,i)-s*U(1,i),Q(2,i)-s*U(2,i),s*U(1,i),s*U(2,i),0);
            else
                h=quiver(Q(1,i),Q(2,i),s*U(1,i),s*U(2,i),0);
            end
            set(h,'MaxHeadSize',10000,'linewidth',2,'color','m')
        end, end
end
if nargin>3
    for i=1:pp, if dim==3,
            mArrow3(P(:,i),P(:,i)+s*V(:,i),'facealpha',0.5,'color','blue','tipWidth',s*fac1);
        else
            h=quiver(P(1,i),P(2,i),s*V(1,i),s*V(2,i),0);
            set(h,'MaxHeadSize',10000,'linewidth',2,'color','b')
        end, , end
end
grid on;
set(gcf,'Renderer','painters');
end % function TenSimPlot
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