/// <summary>
/// Initializes a new instance of the <see cref="Legend"/> class.
/// </summary>
/// <param name="textInstance">The text instance.</param>
public Legend(TextInstance textInstance)
{
_legendEntries = new List <LegendEntry>();
_border = new GL_Border(Color.Black, textInstance.Shaders);
_textInstance = textInstance;
_linesShader = textInstance.Shaders.LineShader;
_rect = new GLRectangleF(0, 0, 0, 0);
_innerRect = new GLRectangleF(0, 0, 0, 0);
_entryGapX = 2;
_nEntriesVert = 5;
_margin = new Margin();
_margin.Left = 10;
_margin.Right = 10;
_margin.Top = 2;
_margin.Bottom = 5;
_lineHeight = textInstance.FontSize * 0.8;
_VBOLine = GL.GenBuffer();//set up OpenGL by generating buffers and using the shader
_VAOLine = GL.GenVertexArray();
_linesShader.Use();
GL.BindVertexArray(_VAOLine);//setting up VAO states and binding the VBO
GL.EnableVertexAttribArray(_linesShader.VertexLocation);
GL.BindBuffer(BufferTarget.ArrayBuffer, _VBOLine);
_mat = Matrix4.Identity;
GL.UniformMatrix4(_linesShader.MatrixLocation, false, ref _mat);
GL.VertexAttribPointer(_linesShader.VertexLocation, 2, VertexAttribPointerType.Float, false, 2 * sizeof(float), 0);
GL.BindVertexArray(0);
_linesShader.StopUse();
}
/// <summary>
/// Initializes a new instance of the <see cref="PaneBase"/> class.
/// </summary>
/// <param name="paneRect">The pane rect.</param>
/// <param name="textInstance">The text instance.</param>
public PaneBase(RectangleF paneRect, TextInstance textInstance)
{
_rect = new GLRectangleF(0, 0, 0, 0);
_rect.X = (int)paneRect.X;
_rect.Height = (int)paneRect.Height;
_rect.Width = (int)paneRect.Width;
_rect.Y = (int)paneRect.Bottom;
_margin = new Margin();
_glBorder = new GL_Border(Color.Black, textInstance.Shaders);
_legend = new Legend(textInstance);
}
/// <summary>
/// Initializes a new instance of the <see cref="Chart"/> class.
/// </summary>
/// <param name="shaders">The shaders.</param>
public Chart(Shaders shaders)
{
_glBorder = new GL_Border(Color.Black, shaders);
}
