Points in Figures: Rectangles, Circles, and Triangles
Given a list of figures (rectangles, circles, and triangles) and a list of points in the
x-y plane, determine for each point which figures (if any) contain the
point.
Input Specification
There will be n (≤ 10) figure descriptions, one per line. The first
character will designate the type of figure (“r
”,
“c
”, “t
” for rectangle, circle, or
triangle, respectively). This character will be followed by values which describe that figure:
-
For a rectangle, there will be four real values designating the x-y
coordinates of the upper left and lower right corners.
-
For a circle, there will be three real values, designating the x-y
coordinates of the center and the radius.
-
For a triangle, there will be six real values designating the x-y
coordinates of the vertices.
The end of the list will be signalled by a line containing an asterisk in column one.
The remaining lines will contain the x-y coordinates, one per line, of the
points to be tested. The end of this list will be indicated by a point with coordinates
9999.9 9999.9; these values should not be included in the output.
Points coinciding with a figure border are not considered inside.
Output Specification
For each point to be tested, write a message of the form
Point i is contained in figure j
for each figure that contains that point. If the point is not contained in any figure, write
a message of the form
Point i is not contained in any figure
Points and figures should be numbered in the order in which they appear in the input.
Sample Input
r 8.5 17.0 25.5 -8.5
c 20.2 7.3 5.8
t -1.0 -1.0 10.1 2.2 .4 1.4
r 0.0 10.3 5.5 0.0
c -5.0 -5.0 3.7
t 20.3 9.8 10.0 -3.2 17.5 -7.7
r 2.5 12.5 12.5 2.5
c 5.0 15.0 7.2
t -10.0 -10.0 10.0 25.0 30.0 -10.0
*
2.0 2.0
4.7 5.3
6.9 11.2
20.0 20.0
17.6 3.2
-5.2 -7.8
9999.9 9999.9
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Output for Sample Input
Point 1 is contained in figure 4
Point 1 is contained in figure 9
Point 2 is contained in figure 4
Point 2 is contained in figure 7
Point 2 is contained in figure 9
Point 3 is contained in figure 7
Point 3 is contained in figure 8
Point 3 is contained in figure 9
Point 4 is not contained in any figure
Point 5 is contained in figure 1
Point 5 is contained in figure 2
Point 5 is contained in figure 6
Point 5 is contained in figure 9
Point 6 is contained in figure 5
Point 6 is contained in figure 9
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Diagram of sample input figures and points