How to shift and re plot 4 rectangles ?
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I have a rectangle xrect = [x1 x2 x3 x4 x1]; yrect = [y1 y2 y3 y4 y1];
I have plotted the rectangle, but I need to shift it by 10, to make for different rectangle in different positions, so that each new rectangle centroid will be the corner of the xrect,yrect original rectangle.
Some code I have:
shift = 10;
xyrect = [xrect; yrect];
shiftsRec = [xyrect(1)-[shift,0]; xyrect(2) + [shift,0]; xyrect(3) - [0,shift]; xyrect(4) + [0,shift]];
for i=1:4
temp = shiftsRec(i,:);
newRect(i) = [xyrect * temp];
plot(newRectangles);
end
采纳的回答
Aquatris
2018-7-2
Is this what you are trying to achieve?
x1 = -10;x2 = 10;x3 = 10;x4 = -10; y1 = -15; y2 = -15;y3 = 15;y4 = 15;
xrect = [x1 x2 x3 x4 x1] ; yrect = [y1 y2 y3 y4 y1] ; % original rectangle centered at [0,0]
shift = 5;
scale2 = 0.5; % change the size of the additional rectangle, originals' size is 1
scale3 = 0.2; % change the size of the additional rectangle, originals' size is 1
scale4 = 0.8; % change the size of the additional rectangle, originals' size is 1
scale5 = 0.3; % change the size of the additional rectangle, originals' size is 1
xrect2 = x1 + xrect*scale2; yrect2 = y1 + yrect*scale2;
xrect3 = x2 + xrect*scale3; yrect3 = y2 + yrect*scale3;
xrect4 = x3 + xrect*scale4; yrect4 = y3 + yrect*scale4;
xrect5 = x4 + xrect*scale5; yrect5 = y4 + yrect*scale5;
plot(xrect,yrect,xrect2,yrect2,xrect3,yrect3,xrect4,yrect4,xrect5,yrect5),axis([-60 60 -60 60])
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