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using System;
using System.Text;
using OpenTK;
using OpenTK.Graphics.OpenGL4;
using Unicity.Renderer.Shapes;
namespace Unicity.Renderer
{
public class GraphicsRenderer : IDisposable
{
public RenderWindow window { get; }
public Camera camera = null;
Shader shader = null;
public GraphicsRenderer(RenderWindow window, Camera camera)
{
this.window = window;
this.camera = camera;
Console.WriteLine("Compiling GLSL shaders...");
string vertexShader = Encoding.UTF8.GetString(Properties.Resources.vertexShader);
string fragmentShader = Encoding.UTF8.GetString(Properties.Resources.fragmentShader);
shader = new Shader(vertexShader, fragmentShader);
shader.Use();
Console.WriteLine("Reticulating splines...");
GL.ClearDepth(1.0f);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Lequal);
camera.Initialize();
window.Update += Window_Update;
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Line);
}
private void Window_Update(object sender, EventArgs e)
{
camera.UpdateView(shader);
shader.Use();
}
public void SetClearColor(float red, float green, float blue, float alpha)
{
GL.ClearColor(red, green, blue, alpha);
}
public void SetDrawColor(float red, float green, float blue)
{
shader.SetUniform("color", new Vector3(red, green, blue));
}
public void DrawShape(Shape shape)
{
shape.Draw(shader, this);
}
public void DrawShapes(Shape[] shapes)
{
foreach (Shape shape in shapes)
{
DrawShape(shape);
}
}
public void ClearScreen()
{
window.window.MakeCurrent();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
}
bool disposed = false;
protected virtual void Dispose(bool disposing)
{
// Return of already disposed
if (disposed)
{
return;
}
if (disposing)
{
// Free managed objects here
}
// Dispose of any unmanaged resources
window?.Dispose();
shader.Delete();
// Set disposed flag to true
disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
}
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