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camerapath.hpp
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/
camerapath.hpp
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#pragma once
#include "math.hpp"
#include <vector>
namespace kd
{
class CameraPath
{
public:
void add(const Matrix4x4f& m)
{
frames.push_back(m);
}
Matrix4x4f get(float t)
{
int i = int(t * 10.f);
if (i < 0)
return frames[0];
if (i >= frames.size())
return frames[frames.size()-1];
return frames[i];
}
void save(const char* fn)
{
FILE* fp = fopen(fn, "w");
for (int i = 0; i < (int)frames.size(); i++)
{
for (int j = 0; j < 16; j++)
fprintf(fp, " %f", frames[i].data()[j]);
fprintf(fp, "\n");
}
fclose(fp);
}
void load(const char* fn)
{
FILE* fp = fopen(fn, "r");
for (;;)
{
Matrix4x4f m;
int n = fscanf(fp, "%f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f",
&m.data()[0], &m.data()[1], &m.data()[2], &m.data()[3],
&m.data()[4], &m.data()[5], &m.data()[6], &m.data()[7],
&m.data()[8], &m.data()[9], &m.data()[10], &m.data()[11],
&m.data()[12], &m.data()[13], &m.data()[14], &m.data()[15]);
if (n != 16)
break;
frames.push_back(m);
}
fclose(fp);
}
std::vector<Matrix4x4f> frames;
};
}