88 lines
1.7 KiB
C++
88 lines
1.7 KiB
C++
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#include <iostream>
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#include <cmath>
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#include "AnsiConsole.h"
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struct Position{
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int x;
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int y;
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Position(int x_=0, int y_=0){ x=x_;y=y_;}
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};
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class Point{
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protected:
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Position _position;
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public:
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Point(int x=0, int y=0);
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void draw();
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};
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Point::Point(int x, int y){
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_position = Position(x,y);
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}
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void Point::draw(){
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ansiConsole.printText(_position.x,_position.y,"*", Colors::RED);
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}
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class Circle{
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protected:
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Position _position;
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int _radius;
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public:
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Circle(int x=0, int y=0, int radius=0);
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void draw();
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};
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Circle::Circle(int x, int y, int radius){
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_position = Position(x,y);
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_radius=radius;
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}
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void Circle::draw(){
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/* see https://de.wikibooks.org/wiki/Formelsammlung_Mathematik:_Geometrie
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* Höhensatz des Euklid
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* */
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int x_start = _position.x - _radius/2;
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int x_stop = _position.x + _radius/2;
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for(int i=x_start; i<=x_stop; i++){
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double x_relative = double(i) - double(x_start);
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double h = sqrt(x_relative*(x_stop-x_start-x_relative));
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ansiConsole.printText(_position.x + int(x_relative)- _radius/2,
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_position.y +h,"#",
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Colors::GREEN);
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ansiConsole.printText(_position.x + int(x_relative)- _radius/2,
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_position.y -h,"#",
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Colors::GREEN);
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}
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}
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int main(int argc, char **argv)
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{
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// x=1 and y=1 is the upper left corner
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// x and y are more like column and row
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ansiConsole.printText(5,5,"Hello, World!");
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Point* p = new Point(10,10);
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p->draw();
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Point* p2 = new Point(2,10);
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p2->draw();
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Circle* c = new Circle(30, 15, 10);
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c->draw();
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Point* p3= new Point(30,15);
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p3->draw();
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delete p;
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delete p2;
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delete p3;
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delete c;
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return 0;
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}
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