我正在为3D世界编写一个代码来进行2D投影,当我尝试在向量中推回坐标时,它给出了这个错误,即没有匹配的函数来调用std :: vector。
#include <X11/Xlib.h>
#include "draw.h"
#include "points.h"
#include "unistd.h"
#include <math.h>
#include <vector>
void draw(Display* d, Window w, GC gc)
{
std::vector<float> xpoints;
xpoints.push_back (-1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0);
std::vector<float> ypoints;
ypoints.push_back (1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0);
std::vector<float> zpoints;
zpoints.push_back (-1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0);
for (;;)
{
XClearWindow(d, w);
for (unsigned int c = 0; c < xpoints.size(); c++)
{
XDrawLine(d, w, gc, xpoints.at(c), ypoints.at(c), xpoints.at(c+1), ypoints.at(c+1));
}
XFlush(d);
usleep(16666);
}
}
答案 0 :(得分:3)
您无法使用push_back
一次推送多个值:
xpoints.push_back (-1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0);
如果您使用c++11
,则应直接初始化矢量:
std::vector<float> xpoints{-1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0};
答案 1 :(得分:0)
只需包含矢量标题:
#include <vector>