我有两个类SHCalculator并SphericalLightProbe在单独的文件中。我完全剥离了它们以呈现我得到的错误，所以这些是四个文件：
SHCalculator.h
#pragma once
namespace SphericalHarmonics
{
class SHCalculator
{
private:
public:
void Test();
SphericalLightProbe Test2();
};
}
SHCalculator.cpp
#include "pch.h"
#include "SphericalLightProbe.h"
#include "SHCalculator.h"
namespace SphericalHarmonics
{
void SHCalculator::Test()
{
SphericalLightProbe sp(2, 3.4f);
for (int i = 0; i < sp.coeffs.size(); i++)
{
std::cout << sp.coeffs[i] << std::endl;
}
}
SphericalLightProbe SHCalculator::Test2()
{
SphericalLightProbe sp(2, 4.3f);
for (int i = 0; i < sp.coeffs.size(); i++)
{
std::cout << sp.coeffs[i] << std::endl;
}
return sp;
}
}
SphericalLightProbe.h
#pragma once
namespace SphericalHarmonics
{
class SphericalLightProbe
{
private:
public:
SphericalLightProbe() { }
SphericalLightProbe(int numCoeffs);
SphericalLightProbe(int numCoeffs, float value);
std::vector<Eigen::Vector3f> coeffs;
};
}
SphericalLightProbe.cpp
#include "pch.h"
#include "SphericalLightProbe.h"
namespace SphericalHarmonics
{
SphericalLightProbe::SphericalLightProbe(int numCoeffs)
{
coeffs.resize(numCoeffs);
}
SphericalLightProbe::SphericalLightProbe(int numCoeffs, float value)
{
coeffs.resize(numCoeffs, Eigen::Vector3f(value, value, value));
}
}
这给了我一堆错误：
C2238 unexpected token(s) preceding ';'
C2059 syntax error: '('
Message see declaration of 'SphericalHarmonics::SHCalculator'
E0020 identifier "SphericalLightProbe" is undefined
C3646 'Test2': unknown override specifier
C2039 'Test2': is not a member of 'SphericalHarmonics::SHCalculator'
如果我Test2()通过注释删除它，所有错误都会消失。我试图理解为什么。
您缺少SHCalculator.h标题中的包含内容；
尝试类似：
#pragma once
#include "SphericalLightProbe.h"
namespace SphericalHarmonics
{
class SHCalculator
{
private:
public:
void Test();
SphericalLightProbe Test2();
};
}
请注意，如果您的
SHCalculator.cpp文件包含上述内容，#include "SphericalLightProbe.h"则不需要重复的行。
但是，如果您出于任何原因想避免包含，请改用前向声明，例如：
#pragma once
namespace SphericalHarmonics {
class SphericalLightProbe;
// ...
} // namespace SphericalHarmonics
请注意，前向声明通常不会强制您切换到指针（如
SphericalLightProbe *）。
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