i have to draw an incircle in a triangle.
6 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
i have to draw an incircle of a triangle, for that i have made an traingle... but now, how to plot an incicle in it.
clc
clear
p1=[2 0 0];
p2=[0 2 0];
p3=[0 0 2];
% Plot triangle using 'patch'
figure('color','w')
h=patch('Faces',1:3,'Vertices',[p1;p2;p3]);
set(h,'FaceColor','r','EdgeColor','k','LineWidth',2,'FaceAlpha',0.5)
axis equal vis3d
view([100 100])
xlabel('x','FontSize',20)
ylabel('y','FontSize',20)
zlabel('z','FontSize',20)
0 comentarios
Respuestas (1)
Swatantra Mahato
el 20 de Nov. de 2020
Hi Saurabh,
Assuming you have calculated the incentre and inradius for the incircle, you can plot the incircle by using the parametric equations for a circle in 3D space and using the "plot3" function.
An example workflow is shown below (here "r" is the inradius and "in" is the vector representing the incentre)
V=[2,2,2]; %the normal to the plane of the triangle
V=V/norm(V); % unit vector for the normal
A=(p1-in)/norm(p1-in); % a unit vector on the plane passing through center of the circle
B=cross(A,V); % a vector perpendicular to A and in the plane of the triangle. A and B act as the axes
th=0:0.01:2*pi;
x=in(1)+r*cos(th)*A(1)+r*sin(th)*B(1);
y=in(2)+r*cos(th)*A(2)+r*sin(th)*B(2);
z=in(3)+r*cos(th)*A(3)+r*sin(th)*B(3);
hold on
l=plot3(x,y,z)
Hope this helps
0 comentarios
Ver también
Categorías
Más información sobre Computational Geometry en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!