/// <summary>
/// Initializes a new instance of the <see cref="Scale"/> class.
/// </summary>
/// <param name="ownerAxis">The owner axis.</param>
/// <param name="TextInstance">The text instance.</param>
public Scale(Axis ownerAxis, TextInstance TextInstance)
{
_ownerAxis = ownerAxis;
_textInstance = TextInstance;
_min = 0.0;
_max = 10.0;
_majorStep = 1;
_minorStep = 0.1;
_targetXSteps = 7;
_targetYSteps = 7;
_targetMinorXSteps = 5;
_targetMinorYSteps = 5;
_VBO = GL.GenBuffer(); //generate VBO, VAO and setting them up here
_VAO = GL.GenVertexArray();
_linesShader = TextInstance.Shaders.LineShader;
_linesShader.Use();
GL.BindVertexArray(_VAO);
GL.EnableVertexAttribArray(_linesShader.VertexLocation);
GL.BindBuffer(BufferTarget.ArrayBuffer, _VBO);
_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="CurveItem"/> class.
/// Sets up the OpenGL Objects VAO and VBO and AttribPointers
/// </summary>
/// <param name="pane">The pane.</param>
/// <param name="label">The label.</param>
/// <param name="points">The points.</param>
/// <param name="color">The color.</param>
/// <param name="linesShader">The lines shader.</param>
public CurveItem(GraphPane pane, string label, RollingVec2List points, Color color, LinesShader linesShader)
{
_rollingV2List = points;
_GraphVertex = new Vector2[points.Capacity];
_label = label;
_color = color;
_yAxisIndex = 0;
_linesShader = linesShader;
_pane = pane;
_linesShader.Use();//use the Shader, generate and bindd VAO and VBO
_VAO = GL.GenVertexArray();
_VBO = GL.GenBuffer();
GL.BindVertexArray(_VAO);
GL.EnableVertexAttribArray(_linesShader.VertexLocation); //enable the in variable of the Shader, where the Vertices are put
GL.BindBuffer(BufferTarget.ArrayBuffer, _VBO); //bind the VBO and give it an empty array
GL.BufferData <Vector2>(BufferTarget.ArrayBuffer, (IntPtr)(Vector2.SizeInBytes * _GraphVertex.Length), _GraphVertex, BufferUsageHint.StreamDraw);
//set up the Pointer for OpenGL to interpret Vertices
GL.VertexAttribPointer(_linesShader.VertexLocation, 2, VertexAttribPointerType.Float, false, Vector2.SizeInBytes, 0);
GL.BindVertexArray(0);
_linesShader.StopUse();
}
/// <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();
}
