main.cpp File Reference

Main entry point for the Solar System simulation application. More...

#include <iostream>
#include <cmath>
#include <GL/glut.h>
#include "stb_image.h"
#include "textures.h"
#include "planet_radii.h"
#include "orbit_radii.h"
#include "planet_speeds.h"
#include "texture_loader.cpp"
#include "mouse_handler.cpp"
#include "keyboard_handler.cpp"

Macros
#define	GL_SILENCE_DEPRECATION

Functions
void	printCommandMenu ()
	Prints the command menu for user instructions.
void	init ()
	Initializes OpenGL settings and loads textures.
void	drawTexturedSphere (GLuint texture, float radius)
	Draws a textured sphere with the given texture and radius.
void	drawOrbit (float radius)
	Draws an orbit with the given radius.
void	drawSun (bool withLighting)
	Draws the sun with optional lighting.
void	drawSaturnRing (float innerRadius, float outerRadius)
	Draws Saturn's rings.
void	drawPlanet (GLuint texture, float orbitRadius, float orbitSpeed, float planetRadius, const char *name, bool hasRing=false, float innerRingRadius=0.0f, float outerRingRadius=0.0f)
	Draws a planet with the specified parameters.
void	display ()
	Displays the current frame.
void	reshape (int w, int h)
	Handles window resizing events.
void	update (int value)
	Updates the simulation state.
int	main (int argc, char **argv)
	Main entry point for the application.

Variables
GLuint	sunTexture
GLuint	mercuryTexture
GLuint	venusTexture
GLuint	earthTexture
GLuint	marsTexture
GLuint	jupiterTexture
GLuint	saturnTexture
GLuint	saturnRingTexture
GLuint	uranusTexture
GLuint	neptuneTexture
float	rotationAngle = 0.0

Detailed Description

Main entry point for the Solar System simulation application.

This file contains the main function and the core rendering logic for the Solar System simulation, including initialization, drawing, and updating the scene. It also handles user input via keyboard and mouse.

Macro Definition Documentation

GL_SILENCE_DEPRECATION

#define GL_SILENCE_DEPRECATION

Function Documentation

display()

void display

(

)

Displays the current frame.

This function clears the color and depth buffers, sets up the camera view, and draws all celestial bodies based on the current state. It also handles the selection of individual planets or the entire solar system.

drawOrbit()

void drawOrbit

(

float

radius

)

Draws an orbit with the given radius.

Parameters

radius

The radius of the orbit.

This function draws a circular orbit using line loops, representing the path on which a planet revolves around a star.

drawPlanet()

void drawPlanet	(	GLuint	texture,
		float	orbitRadius,
		float	orbitSpeed,
		float	planetRadius,
		const char *	name,
		bool	hasRing = false,
		float	innerRingRadius = 0.0f,
		float	outerRingRadius = 0.0f )

Draws a planet with the specified parameters.

Parameters

texture	The texture to apply to the planet.
orbitRadius	The radius of the planet's orbit around the sun.
orbitSpeed	The speed of the planet's orbit.
planetRadius	The radius of the planet.
name	The name of the planet (for logging purposes).
hasRing	If true, a ring is drawn around the planet (default is false).
innerRingRadius	The inner radius of the ring (default is 0.0f).
outerRingRadius	The outer radius of the ring (default is 0.0f).

This function draws a planet with the specified texture and radius, and optionally draws a ring around the planet if specified.

drawSaturnRing()

void drawSaturnRing	(	float	innerRadius,
		float	outerRadius )

Draws Saturn's rings.

Parameters

innerRadius	The inner radius of the rings.
outerRadius	The outer radius of the rings.

This function draws Saturn's rings as a series of textured disks. The transparency and spacing of the disks create the appearance of rings.

drawSun()

void drawSun

(

bool

withLighting

)

Draws the sun with optional lighting.

Parameters

withLighting

If true, lighting effects are enabled; otherwise, they are disabled.

This function draws the sun using the sun texture. It also applies a rotation based on the current rotation angle. Lighting effects are applied if specified.

drawTexturedSphere()

void drawTexturedSphere	(	GLuint	texture,
		float	radius )

Draws a textured sphere with the given texture and radius.

Parameters

texture	The texture to apply to the sphere.
radius	The radius of the sphere.

This function draws a textured sphere using the specified texture and radius, representing a celestial body.

init()

void init

(

)

Initializes OpenGL settings and loads textures.

This function sets up OpenGL settings, such as enabling texture mapping and depth testing. It also loads textures for all celestial bodies and prints the command menu.

main()

int main	(	int	argc,
		char **	argv )

Main entry point for the application.

Parameters

argc	The number of command-line arguments.
argv	The command-line arguments.

Returns

0 on successful execution.

This function initializes GLUT, sets up the window, and registers callback functions for display, reshape, keyboard, and mouse events. It then enters the GLUT main loop.

printCommandMenu()

void printCommandMenu

(

)

Prints the command menu for user instructions.

This function prints a menu of commands to the console, providing users with information on how to control the simulation using keyboard and mouse inputs.

reshape()

void reshape	(	int	w,
		int	h )

Handles window resizing events.

Parameters

w	The new width of the window.
h	The new height of the window.

This function adjusts the viewport and projection matrix when the window is resized to ensure the correct aspect ratio and perspective.

update()

void update

(

int

value

)

Updates the simulation state.

Parameters

value

Unused parameter for timer function.

This function updates the rotation angle for animation and schedules the next update call. It also checks if the simulation is paused or running.

Variable Documentation

earthTexture

GLuint earthTexture

jupiterTexture

GLuint jupiterTexture

marsTexture

GLuint marsTexture

mercuryTexture

GLuint mercuryTexture

neptuneTexture

GLuint neptuneTexture

rotationAngle

float rotationAngle = 0.0

saturnRingTexture

GLuint saturnRingTexture

saturnTexture

GLuint saturnTexture

sunTexture

GLuint sunTexture

uranusTexture

GLuint uranusTexture

venusTexture

GLuint venusTexture