101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
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#include <cmath>
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#include <iostream>
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using namespace std;
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class Triangle {
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public:
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double a, b, c;
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Triangle(double an, double bn, double cn) : a(an), b(bn), c(cn) {
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if (!Triangle::exst_tr()) {
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this->a = 3;
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this->b = 4;
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this->c = 5;
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}
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}
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bool exst_tr();
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void show();
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double perimetr();
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double square();
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bool is_similar(Triangle & t2);
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double get_a();
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double get_b();
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double get_c();
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};
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bool Triangle::exst_tr() {
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return Triangle::perimetr() - max(max(this->a, this->b), this->c) * 2 > 0;
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}
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void Triangle::show() {
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cout << "A = " << this->a << ", B = " << this->b << ", C = " << this->c << endl;
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}
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double Triangle::perimetr() {
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return this->a + this->b + this->c;
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}
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double Triangle::square() {
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double p = Triangle::perimetr() / 2;
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return sqrt(p * (p - this->a) * (p - this->b) * (p - this->c));
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}
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bool Triangle::is_similar(Triangle & t2) {
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double max_t1 = max(max(this->a, this->b), this->c);
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double max_t2 = max(max(t2.a, t2.b), t2.c);
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double min_t1 = min(min(this->a, this->b), this->c);
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double min_t2 = min(min(t2.a, t2.b), t2.c);
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double mid_t1 = Triangle::perimetr() - max_t1 - min_t1;
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double mid_t2 = t2.perimetr() - max_t2 - min_t2;
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return max_t1 / max_t2 == min_t1 / min_t2 && max_t1 / max_t2 == mid_t1 / mid_t2;
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}
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double Triangle::get_a() {
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return this->a;
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}
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double Triangle::get_b() {
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return this->b;
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}
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double Triangle::get_c() {
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return this->c;
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}
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class Circle {
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public:
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float r;
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float x, y;
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Circle(float rn, float xn, float yn) : r(rn), x(xn), y(yn) {};
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void set_circle(float r, float x, float y);
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float square();
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bool triangle_around(Triangle & t);
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bool triangle_in(Triangle & t);
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bool check_circle(Circle & c);
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};
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void Circle::set_circle(float r, float x, float y) {
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this->r = r;
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this->x = x;
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this->y = y;
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}
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float Circle::square() {
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return 3.14 * pow(r, 2);
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}
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bool Circle::triangle_around(Triangle & t) {
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return t.square() == (t.a * t.b * t.c) / (4 * this->r);
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}
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bool Circle::triangle_in(Triangle & t) {
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return t.square() == t.perimetr() / (2 * this->r);
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}
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bool Circle::check_circle(Circle & c) {
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float center_distance = sqrt(pow(abs(this->x - c.x), 2) + pow(abs(this->y - c.y), 2));
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return center_distance < (c.r + this->r) && center_distance > abs(c.r - this->r);
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}
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