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#pragma once
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <vector>
#include <stdio.h> //includes FILE typedef
#include <string>
namespace Helpers
{
GLuint LoadShaders(const std::string &vertex_file_path, const std::string &fragment_file_path);
GLuint LoadComputeShader(const std::string &compute_file_path, unsigned int localSizeX, unsigned int localSizeY, unsigned int localSizeZ);
bool DoesFileExist(const std::string& path);
void WriteOutputPNG(const std::string& path, const std::vector<uint32_t>& data, unsigned int width, unsigned int bufferHeight, double gamma, double colorScale);
/** Wraps around a C file descriptor. Libpng could be taught to use C++ streams, but I'm too lazy and rather wrap this ugly thing up, so it gets cleaned... */
class ScopedCFileDescriptor
{
public:
ScopedCFileDescriptor(const char *path, const char *mode);
~ScopedCFileDescriptor();
FILE * Get() const;
bool IsValid() const;
private:
FILE * Descriptor;
};
struct RenderSettings
{
unsigned int imageWidth = 1024;
unsigned int imageHeight = 576;
unsigned int windowWidth = 1024;
unsigned int windowHeight = 576;
unsigned int orbitLengthSkip = 0;
unsigned int orbitLengthRed = 10;
unsigned int orbitLengthGreen = 100;
unsigned int orbitLengthBlue = 1000;
unsigned int localWorkgroupSizeX = 16;
unsigned int localWorkgroupSizeY = 16;
unsigned int localWorkgroupSizeZ = 1;
unsigned int globalWorkGroupSizeX = 64;
unsigned int globalWorkGroupSizeY = 64;
unsigned int globalWorkGroupSizeZ = 1;
unsigned int targetFrameRate = 60;
std::string pngFilename = "";
double pngGamma = 1.0;
double pngColorScale = 2.0;
unsigned int ignoreMaxBufferSize = 0;
unsigned int printDebugOutput = 0;
bool CheckValidity();
bool ParseCommandLine(int argc, char * argv[]);
};
template<typename ValueType, typename TimeType>
class PIDController
{
public:
PIDController(ValueType prop, ValueType diff, ValueType integral) : propFactor(prop), diffFactor(diff), intFactor(integral) {}
ValueType Update(TimeType dT, ValueType Error)
{
errorSum += Error * dT;
const auto differential{(Error - lastError)/dT};
lastError = Error;
return Error * propFactor + errorSum * intFactor + differential * diffFactor;
}
protected:
ValueType propFactor{};
ValueType diffFactor{};
ValueType intFactor{};
private:
ValueType errorSum{};
ValueType lastError{};
};
}
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