File: triangle.e

package info (click to toggle)
smarteiffel 1.1-11
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 12,288 kB
  • ctags: 40,785
  • sloc: ansic: 35,791; lisp: 4,036; sh: 1,783; java: 895; ruby: 613; python: 209; makefile: 115; csh: 78; cpp: 50
file content (49 lines) | stat: -rw-r--r-- 639 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
class TRIANGLE
-- Description of TRIANGLEs objects.
   
creation make
   
feature
   
   p1: POINT
	 -- First point.
   p2: POINT
	 -- Second point.
   p3: POINT
	 -- Third point.
   
   translate(dx, dy: DOUBLE) is
	 -- To translate the `Current' TRIANGLE.
      do
	 p1.translate(dx,dy)
	 p2.translate(dx,dy)
	 p3.translate(dx,dy)
      end
   
feature {NONE}   
   
   make(a, b, c: POINT) is
	 -- To create a new TRIANGLE.
      require
	 a /= Void
	 b /= Void
	 c /= Void
      do
	 p1 := a
	 p2 := b
	 p3 := c
      ensure
	 p1 = a
	 p2 = b
	 p3 = c
      end
   
invariant
   
   p1 /= Void
   
   p2 /= Void

   p3 /= Void
   
end