demotool/utilities.hh

#pragma once
#ifndef REAL_BUILD
# include "externals.hh"
#endif

/*= Utilities ================================================================*/

// Disable next ImGui button(s)
void disableButton( );
// Re-enable ImGui buttons
inline void reenableButtons( )
{
	ImGui::PopStyleColor( 3 );
}

/*----------------------------------------------------------------------------*/

#define GL_CHECK( FAIL ) \
	do { \
		auto err_( glGetError( ) ); \
		if ( err_ != GL_NO_ERROR ) FAIL; \
	} while ( 0 )

#define GL_ASSERT( ) \
	GL_CHECK({ \
		fprintf( stderr , "GL error %x in %s:%d\n" , \
				err_ , __FILE__ , __LINE__ ); \
		abort( ); \
	})

/*----------------------------------------------------------------------------*/

// Add some value to an angle, keeping it in [-180;180]
void updateAngle(
		float& initial ,
		const float delta
	);
// Make a rotation matrix from three YPR angles (in degrees)
void anglesToMatrix(
		float const* angles ,
		float* matrix );

/*----------------------------------------------------------------------------*/

// Helpers for finding entries in collections
template< typename T , typename I >
inline auto find(
		T const& collection ,
		I const& item )
{
	return std::find( collection.begin( ) , collection.end( ) , item );
}

template< typename T , typename I >
inline auto find(
		T& collection ,
		I const& item )
{
	return std::find( collection.begin( ) , collection.end( ) , item );
}

template< typename T , typename I >
inline bool Contains(
		T const& collection ,
		I const& item )
{
	return std::find( collection.begin( ) , collection.end( ) , item ) != collection.end( );
}

/*----------------------------------------------------------------------------*/

// Get the absolute path
std::string GetAbsolutePath(
		std::string const& path );

// Get the absolute parent path for a (possibly relative) path
std::string GetParentPath(
		std::string const& path );

/*----------------------------------------------------------------------------*/

namespace ImGui {

	bool MenuItemCheckbox(
			char const* name ,
			bool* checked );

} // namespace ImGui