[英]Triangulation Monotone Polygon in RAD Studio C++ Builder
Error in code in C++ Builder RAD Studio: [bcc32c Error] Unit10.cpp(267): no matching constructor for initialization of 'triangulated_poly'. C++ Builder RAD Studio 中的代码错误:[bcc32c 错误] Unit10.cpp(267):没有匹配的构造函数用于初始化“triangulated_poly”。 What's wrong?
怎么了? Please help, so that everything works.
请帮忙,以便一切正常。 //
//
//---------------------------------------------------------------------------
#include <vcl.h>
#include <vector>
#include <stack>
#pragma hdrstop
#include "Unit10.h"
using namespace std;
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm10 *Form10;
int ii=0;
//---------------------------------------------------------------------------
__fastcall TForm10::TForm10(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
class triangulated_poly :public polygone {
Stack stack;
int stack_length;
point left_vertex;
point right_vertex;
diagonal* diagonals;
flag_vertex* x_vertexes;
public:
triangulated_poly(point* U_points, point* L_points, int UPPER_count, int LOWER_count);
~triangulated_poly();
void x_sort();
void triangulate();
};
triangulated_poly::triangulated_poly(point* U_points, point* L_points, int UPPER_count, int LOWER_count) :polygone(U_points, L_points, UPPER_count, LOWER_count) {
..........
}
triangulated_poly::~triangulated_poly() {
.......
}
void triangulated_poly::triangulate() {
........
}
//---------------------------------------------------------------------------
void __fastcall TForm10::Button1Click(TObject *Sender)
{
HDC hdc=GetDC(Form10->Handle);
for (int i = 0; i < ii; i++)
{
MoveToEx(hdc,s[i].x,s[i].y,NULL);
LineTo(hdc,s[(i+1)%ii].x,s[(i+1)%ii].y);
}
triangulated_poly poly;
poly.triangulate();
}
The line线
triangulated_poly poly;
tries to construct a triangulated_poly
using its default constructor.尝试使用其默认构造函数构造一个
triangulated_poly
。
You never declared a default constructor (ie a constructor that excepts an empty argument list) for triangulated_poly
and there is no implicitly-declared one because you declared at least one constructor yourself.您从未为
triangulated_poly
声明默认构造函数(即,除了空参数列表的构造函数),并且没有隐式声明的构造函数,因为您自己至少声明了一个构造函数。 So the compiler gives you the error that no suitable constructor was found.所以编译器给你一个错误,没有找到合适的构造函数。
Either add a default constructor to triangulated_poly
or construct triangulated_poly
with an argument list matching triangulated_poly
's constructor's parameters:无论是添加一个默认的构造函数来
triangulated_poly
或构建triangulated_poly
与参数列表匹配triangulated_poly
的构造函数的参数:
triangulated_poly poly{/*arguments here*/};
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