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annotate doodle/tk/test/test1.d @ 100:a274d16ab6ce

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struct initialisers
author David Bryant <bagnose@gmail.com>
date Mon, 18 Oct 2010 18:10:02 +1030
parents 1b4c9ba58673
children 89e8b0d92f36
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1 private {
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2 import doodle.tk.geometry;
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3 import std.stdio;
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4 }
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5
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6 void test1() {
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7 writefln("*** Test1 ***");
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8
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9 Point p1;
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10 Point p2 = p1; // copy construction
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11 assert(p1 == p2); // equality
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12 assert(!(p1 != p2)); // inequality
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13 p2 = p1; // assignment
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14 assert(p1 == p2);
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15
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16 Point p3 = Point(3.0, 5.0); // standard constructor
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17 assert(p3 - p3 == Vector()); // subtraction (point minus point)
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19 Vector v3 = Vector(3.0, 5.0);
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20 assert(p3 - v3 == Point()); // subtraction (point minus vector)
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21
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22 Point p4 = Point(1.0, 10.0);
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23 Point p5 = Point(10.0, 1.0);
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24 assert(minExtents(p4, p5) == Point(1.0, 1.0)); // min extents
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25 assert(maxExtents(p4, p5) == Point(10.0, 10.0)); // max extents
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27 writefln("p1: %s", p1); // toString
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28 }
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29
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30 void test2() {
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31 writefln("*** Test2 ***");
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32
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33 Vector v1;
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34 Vector v2 = v1; // copy construction
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35 assert(v1 == v2); // equality
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36 assert(!(v1 != v2)); // inequality
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37 v2 = v1; // assignment
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38
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39 Vector v3 = Vector(3.0, 4.0); // standard construction
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40 assert(v3 + v3 == Vector(6.0, 8.0)); // addition
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41 assert(v3 - v3 == Vector()); // subtraction
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42 assert(-v3 == Vector(-3.0, -4.0)); // negation
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43 assert(v3.length == 5.0); // length
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44 assert(2.0 * v3 == Vector(6.0, 8.0)); // scalar multiplication
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45 assert(v3 / 2.0 == Vector(1.5, 2.0)); // scalar division
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46
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47 writefln("v1: %s", v1); // toString
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48 }
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49
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50 void test3() {
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51 writefln("*** Test3 ***");
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52
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53 // Horizontal axis
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54 Line l1 = Line(Point(0.0, 0.0), Vector(1.0, 0.0));
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55 // Vertical axis
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56 Line l2 = Line(Point(0.0, 0.0), Vector(0.0, 1.0));
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57
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58 Point p;
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59 bool b = intersection(l1, l2, p);
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60 assert(b);
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61 assert(p == Point(0.0, 0.0));
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62 }
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64 void test4() {
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65 writefln("*** Test4 ***");
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66
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67 Line l1 = Line(Point(-1.0, -1.0), Vector( 1.0, 1.0));
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68 Line l2 = Line(Point( 1.0, -1.0), Vector(-1.0, 1.0));
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70 Point p;
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71 bool b = intersection(l1, l2, p);
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72 assert(b);
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73 assert(p == Point(0.0, 0.0));
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74 }
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76 void test5() {
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77 writefln("*** Test5 ***");
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78
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79 // Here the segments intersect
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80
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81 Segment s1 = Segment(Point(2.0, 2.0), Point(4.0, 4.0));
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82 Segment s2 = Segment(Point(2.0, 4.0), Point(4.0, 2.0));
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83
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84 Point p;
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85 bool b = intersection(s1, s2, p);
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86 assert(b);
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87 writefln("p: %s", p);
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88 assert(p == Point(3.0, 3.0));
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89 }
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91 void test6() {
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92 writefln("*** Test6 ***");
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93
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94 // Here the lines of the segments intersect but the segments don't
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95
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96 Segment s1 = Segment(Point(2.0, 2.0), Point(4.0, 4.0));
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97 Segment s2 = Segment(Point(4.0, 2.0), Point(6.0, 0.0));
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98
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99 Point p;
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100 bool b = intersection(s1, s2, p);
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101 assert(!b);
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102 }
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103
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104 void main(string[] args) {
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105 test1();
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106 test2();
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107 test3();
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108 test4();
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109 test5();
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110 test6();
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111 }