// Adds a rectangle shape to the current frame
public void DrawRect(RVIVector2 pos, float width, float height)
{
if (_currentFrame != null)
{
RVIShape rect = RVIShape.CreateRect(new RVIRectangle(pos.x, pos.y, width, height), _currentColorRGBA);
lock (_framesLock)
{
_frames[_currentFrame].Add(rect);
}
}
}
// Adds a line shape to the current frame
public void DrawLine(RVIVector2 posA, RVIVector2 posB)
{
if (_currentFrame != null)
{
RVIShape line = RVIShape.CreateLine(posA, posB, _currentColorRGBA);
lock (_framesLock)
{
_frames[_currentFrame].Add(line);
}
}
}
private void openGLControl_OpenGLDraw(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
{
// Shape count to show on the corner
int shapeCount = 0;
// Vertex count to show on the corner
int vertexCount = 0;
// Get the openGL object from the args
OpenGL gl = args.OpenGL;
// Clear color buffer and depth buffer
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
// Clear matrix modifications
gl.LoadIdentity();
// GL.Begin on line drawing mode
gl.Begin(OpenGL.GL_LINES);
// Lock the frame dictionary lock to read from it
lock (_framesLock)
{
// Iterate through every frame
for (int frameIdx = 0; frameIdx < _frames.Count; frameIdx++)
{
// Get the frame for the current index
List <RVIShape> frame = _frames.ElementAt(frameIdx).Value;
// Iterate through every shape in the current frame
for (int shapeIdx = 0; shapeIdx < frame.Count; shapeIdx++)
{
// Get the shape for the current index
RVIShape shape = frame[shapeIdx];
// Get the color of the shape
byte r = (byte)(shape.Color32 >> 24);
byte g = (byte)(shape.Color32 >> 16);
byte b = (byte)(shape.Color32 >> 8);
byte a = (byte)(shape.Color32 >> 0);
// Set the openGL color to the shape color
gl.Color(r, g, b, a);
// Iterate through every vertex in the shape
for (int vertexIdx = 0; vertexIdx < shape.VertexList.Count; vertexIdx++)
{
// Set the openGL vertex for the current vertex index
gl.Vertex(shape.VertexList[vertexIdx].x, shape.VertexList[vertexIdx].y);
vertexCount++;
}
// Increment the shape count
shapeCount++;
}
}
}
// End drawing lines
gl.End();
// Flush any remaining openGL commands
gl.Flush();
// Draw vertex and shape count
DrawTextGL(gl, "Shape count = " + shapeCount.ToString(), new RVIVector2(5, 20), .50f, .2f, 1f, "Courier New", 1.0f);
DrawTextGL(gl, "Vertex count = " + vertexCount.ToString(), new RVIVector2(5, 35), .50f, .2f, 1f, "Courier New", 1.0f);
}
