I am writing a code for 3D world to 2D projection and as i try to push back coordinates in my vectors it gives me this error that there is no matching function to call to 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);
}
}
You cannot push multiple values at once using push_back
:
xpoints.push_back (-1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0);
If you are using c++11
you should directly initialize your vector:
std::vector<float> xpoints{-1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0};
只需包含矢量标头:
#include <vector>
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