Drawing a rectangle with special specifications
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how can i draw a 172*172 that first edge is black (intensity=0) and second edge 10% brighter and the third edge 10% brighter than second and the last edge 10% brighter than third edge...
thank you for your answers
回答（1 个）
Henric Rydén
2014-5-16
编辑：Henric Rydén
2014-5-16
figure;
axes('XLim', [-50 200],'YLim', [-50 200]);
line([0 172],[172 172],'LineWidth',5,'Color',[0 0 0])
line([172 172],[172 0],'LineWidth',5,'Color',[.1 .1 .1])
line([172 0],[0 0],'LineWidth',5,'Color',[.2 .2 .2])
line([0 0],[0 172],'LineWidth',5,'Color',[.3 .3 .3])
3 个评论
Stephen
2014-5-16
Star Strider
2014-5-16
To compensate for line thickness, change it to:
figure;
axes('XLim', [-50 200],'YLim', [-50 200]);
line([-2 174],[172 172],'LineWidth',5,'Color',[0 0 0])
line([172 172],[174 -2],'LineWidth',5,'Color',[.1 .1 .1])
line([174 -2],[0 0],'LineWidth',5,'Color',[.2 .2 .2])
line([0 0],[-2 174],'LineWidth',5,'Color',[.3 .3 .3])
Henric Rydén
2014-5-19
If you need nicer corners you should use patch instead of line. The syntax is similar, but you give coordinates of faces and vertices. You can also set transparency of patch objects.
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2014-5-19
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