C++/SFML Graphing Application-Repeating Texture/Sprite - c++

Question

I was taking up the challenge of creating a program to use for graphing simple math equations using C++ and the SFML 2.3.2. graphics library, and I've got the graph paper texture rendering fine. However, the problem I've had is getting it to repeat itself as I scroll around.
I was using sf::View to get it to pan, and it works well, but as soon as it pans outside the pre-defined size of the sprite it's just a blank background.
I thought of trying to determine when I'm outside the bounds of the sprite, and then expanding the size of the sprite or moving it, but then drawings (such as a graph) won't persist if the sprite is changed/reset.
What I need to know is how to create a background of a texture, in this case graphing paper, that will tile/repeat in every direction, and allow drawings to be made on top of it that persist if they move off screen.
Code is below:
GraphPaper.h:
#pragma once
#include "stdafx.h"
class GraphPaper
{
public:
GraphPaper();
~GraphPaper();
bool isObjectLoaded();
sf::Sprite getSprite();
private:
void load(std::string filename);
bool isLoaded;
sf::Texture texture;
sf::Sprite sprite;
const std::string file = "images/Graph-Paper.png";
};
GraphPaper.cpp: This is where I create and load the needed sprite and texture.
I set the texture to repeat inside the "load(string filename)" method, but that only affects it within the bounds set by the sprite's rectangle.
#include "GraphPaper.h"
GraphPaper::GraphPaper() : isLoaded(false)
{
load(file);
assert(isObjectLoaded());
}
GraphPaper::~GraphPaper() {};
void GraphPaper::load(std::string filename)
{
if (texture.loadFromFile(filename) == false)
isLoaded = false;
else
{
texture.setRepeated(true);
sprite.setTexture(texture);
//Huge size to at least make it look like it's infinite,
//but a temporary solution.
sprite.setTextureRect(sf::IntRect(0,0,10000,10000));
isLoaded = true;
}
}
bool GraphPaper::isObjectLoaded()
{
return isLoaded;
}
sf::Sprite GraphPaper::getSprite()
{
return sprite;
}
MainWindow.h:
#pragma once
#include "GraphPaper.h"
#include "stdafx.h"
class MainWindow
{
public:
void close();
void start();
void moveCamera(sf::Event);
private:
bool leftMousePressed, rightMousePressed, isExiting;
int r, g, b, mouseX, mouseY;
GraphPaper paper;
const sf::Color white = sf::Color(255, 255, 255);
sf::RenderWindow mainWindow;
sf::View view;
};
MainWindow.cpp: This is what handles all the drawing, and, at the moment, all input processing. "start()" is simply called from the main method.
#include "MainWindow.h"
#include "GraphPaper.h"
#include "stdafx.h"
void MainWindow::start()
{
sf::RectangleShape rectangle = sf::RectangleShape(sf::Vector2f(120, 50));
rectangle.setFillColor(sf::Color(0,0,0));
mainWindow.create(sf::VideoMode(1024, 768, 32), "Test");
sf::View view(sf::FloatRect(0,0,1000,600));
mainWindow.setView(view);
leftMousePressed, rightMousePressed, isExiting = false;
sf::Event currentEvent;
mainWindow.clear(white);
mainWindow.draw(paper.getSprite());
mainWindow.display();
while (!isExiting)
{
while (mainWindow.pollEvent(currentEvent))
{
switch (currentEvent.type)
{
case sf::Event::MouseMoved:
{
if (rightMousePressed == true)
{
std::cout << "Mouse Panned\n";
}
if (leftMousePressed == true)
{
std::cout << "Mouse is Drawing\n";
}
break;
}
case sf::Event::MouseButtonPressed:
{
std::cout << "Mouse Pressed\n";
mouseX = currentEvent.mouseButton.x;
mouseY = currentEvent.mouseButton.y;
if (currentEvent.mouseButton.button == sf::Mouse::Left)
{
leftMousePressed = true;
}
else if (currentEvent.mouseButton.button == sf::Mouse::Right)
{
rightMousePressed = true;
}
break;
}
case sf::Event::MouseButtonReleased:
{
std::cout << "Mouse Released\n";
if (currentEvent.mouseButton.button == sf::Mouse::Left)
{
leftMousePressed = false;
}
else if(currentEvent.mouseButton.button == sf::Mouse::Right)
{
rightMousePressed = false;
}
break;
}
case sf::Event::KeyPressed:
{
if (currentEvent.key.code == sf::Keyboard::Escape)
{
close();
}
//No right movement yet, was testing.
else if (currentEvent.key.code == sf::Keyboard::Left)
{
moveCamera(currentEvent);
}
break;
}
case sf::Event::Closed:
{
close();
break;
}
}
}
}
}
void MainWindow::moveCamera(sf::Event key)
{
std::cout << "Inside moveCamera\n";
//No right movement yet, was testing.
//Movement is also hardcoded for testing as well.
view.move(100, 0);
mainWindow.setView(view);
mainWindow.clear(white);
mainWindow.draw(paper.getSprite());
mainWindow.display();
std::cout << "Leaving moveCamera\n";
}
void draw()
{
//mainWindow.draw();
}
void MainWindow::close()
{
std::cout << "Closing...\n";
mainWindow.close();
isExiting = true;
}