demotool/camera.hh

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


/*= T_Camera =================================================================*/

struct T_Camera
{
	glm::vec3 lookAt = glm::vec3( 0 );
	glm::vec3 angles = glm::vec3( 0 );
	float distance = 10;
	float fov = 90;

	// Everything below is updated by update()
	glm::vec3 dir;
	glm::vec3 up;
	glm::vec3 pos;
	float np;

	T_Camera()
		{ update( ); }

	void handleDND(
			ImVec2 const& move ,
			const bool hasCtrl ,
			const bool hasShift ,
			const bool lmb		// Left mouse button
		);
	void handleWheel(
			const float wheel ,
			const bool hasCtrl ,
			const bool hasShift
		);

	void makeUI( );

    private:
	glm::mat3x3 rotMat;
	float rotationMatrix[ 9 ];
	void update( );
};