已知中心，长，宽，角度，画一倾斜矩形

qfwaterlily

中心、长、宽均已知，如何画与x轴呈一定角度的倾斜矩形？？？:@Q

VibrationMaster

width=30;
length=4;
xc=20;yc=30;
RotationgAngle=60; % in degree

% Computing the Relative Position After Rotation
RotationgAngle=RotationgAngle/180*pi;
RotateMatrix=[cos(RotationgAngle),sin(RotationgAngle);-sin(RotationgAngle),cos(RotationgAngle)];
PostRT=RotateMatrix*[width/2,length/2]';
PostRB=RotateMatrix*[width/2,-length/2]';

PostXY=[PostRT,PostRB,-PostRT,-PostRB,PostRT]+repmat([xc,yc]',[1,5]);
plot(PostXY(1,:),PostXY(2,:))
axis image

qfwaterlily

问题解决了，非常感谢！

ChaChing

感觉上应该是
RotateMatrix=[cos(RotationgAngle),-sin(RotationgAngle);sin(RotationgAngle),cos(RotationgAngle)];