private void openGLControl_OpenGLDraw(object sender, RenderEventArgs e)
{
OpenGL gl = openGLControl.OpenGL;
if (startup)
{
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
gl.ClearColor(1, 1, 1, 1);
startup = false;
return;
}
if ((int)openGLControl.Tag == (int)DrawState.IDLE || isRender == false)
{
return;
}
// Clear the color and depth buffer.
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
Draw(-1);
if (selectMode == SelectMode.APPLY)
{
openGLControl.Tag = (int)DrawState.IDLE;
SwitchMode();
selectMode = SelectMode.SELECT;
return;
}
Shape newShape;
Filler fill = new Filler(gl);
if (selectMode == SelectMode.TRANSLATE)
{
newShape = shapes[selectedID].Clone(gl);
newShape.Transform(affine, gl);
Draw(selectedID);
newShape.Draw(gl);
if (newShape.isFill)
{
switch (newShape.fillType)
{
case FillType.FLOODFILL:
fill.FloodFill(newShape, newShape.fillColor);
break;
default:
fill.ScanFill(newShape, newShape.fillColor);
break;
}
}
if ((int)openGLControl.Tag == (int)DrawState.DONE)
{
shapes[selectedID].startPoint = newShape.startPoint;
shapes[selectedID].endPoint = newShape.endPoint;
shapes[selectedID] = newShape.Clone(gl);
Draw(-1);
affine = new Affine();
openGLControl.Tag = (int)DrawState.IDLE;
}
return;
}
switch (shape)
{
case ShapeType.LINE:
newShape = new Line()
{
type = shape
};
break;
case ShapeType.CIRCLE:
newShape = new Circle()
{
type = shape
};
break;
case ShapeType.RECTANGLE:
newShape = new Rectangle()
{
type = shape
};
break;
case ShapeType.ELLIPSE:
newShape = new Ellipse()
{
type = shape
};
break;
case ShapeType.TRIANGLE:
newShape = new Triangle()
{
type = shape
};
break;
case ShapeType.PENTAGON:
newShape = new Pentagon()
{
type = shape
};
break;
case ShapeType.POLYGON:
newShape = new Polygon();
newShape = shapes.Last();
if (newShape.type != ShapeType.POLYGON || newShape.isCreated == true)
{
openGLControl.Tag = DrawState.IDLE;
return;
}
newShape.lineColor = lineColor;
newShape.fillColor = fillColor;
newShape.lineWidth = (int)nmudLineWidth.Value;
return;
default:
newShape = new Hexagon()
{
type = shape
};
break;
}
newShape.lineColor = lineColor;
newShape.fillColor = fillColor;
newShape.lineWidth = (int)nmudLineWidth.Value;
newShape.startPoint = new Point(startPoint.X, startPoint.Y);
newShape.endPoint = new Point(endPoint.X, endPoint.Y);
newShape.Draw(gl);
if ((int)openGLControl.Tag == (int)DrawState.DONE)
{
newShape.Create(gl);
shapes.Add(newShape);
openGLControl.Tag = DrawState.IDLE;
}
}