private void openGLControl_OpenGLDraw(object sender, RenderEventArgs e)
{
// đoạn code này để đổi backGround thành màu trắng
// Get the OpenGL object.
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 == OPENGL_IDLE || renderMode == false)
{
return;
}
// Clear the color and depth buffer.
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
reDraw(-1);
ShapeType newShape;
if (labelMode.Text == strMode + "Translate" || labelMode.Text == strMode + "Rotate" || labelMode.Text == strMode + "Scale")
{
newShape = listShapes[selectedShape].Clone(gl);
newShape.Transform(affine, gl);
//Không vẽ selectedShape
reDraw(selectedShape);
//Vẽ lại clone
newShape.Draw(gl);
if (newShape.filling)
{
if (newShape.scanLine)
{
newShape.ScanLine(gl);
}
else
{
newShape.BoundaryFill(gl);
}
}
//Đã kéo xong
if ((int)openGLControl.Tag == OPENGL_DRAWN)
{
listShapes[selectedShape].p1 = newShape.p1;
listShapes[selectedShape].p2 = newShape.p2;
listShapes[selectedShape] = newShape.Clone(gl);
reDraw(-1);
affine = new Affine();
openGLControl.Tag = OPENGL_IDLE;
}
return;
}
// Vẽ vời chỗ này. Ví dụ:
switch (shape)
{
case SHAPE_LINE:
newShape = new Line()
{
id = SHAPE_LINE
};
break;
case SHAPE_CIRCLE:
newShape = new Circle()
{
id = SHAPE_CIRCLE
};
break;
case SHAPE_RECTANGLE:
newShape = new Rectangle()
{
id = SHAPE_RECTANGLE
};
break;
case SHAPE_ELLIPSE:
newShape = new Ellipse()
{
id = SHAPE_ELLIPSE
};
break;
case SHAPE_EQUI_TRIANGLE:
newShape = new EquiTriangle()
{
id = SHAPE_EQUI_TRIANGLE
};
break;
case SHAPE_EQUI_PENTAGON:
newShape = new EquiPentagon()
{
id = SHAPE_EQUI_PENTAGON
};
break;
case SHAPE_POLYGON:
//newShape = new Polygon();
newShape = listShapes.Last();
if (newShape.id != SHAPE_POLYGON || newShape.Done == true)
{
openGLControl.Tag = OPENGL_IDLE;
return;
}
newShape.color = userColor;
newShape.thickness = (float)numericUpDown1.Value;
return;
default:
newShape = new EquiHexagon()
{
id = SHAPE_EQUI_HEXAGON
};
break;
}
newShape.color = userColor;
newShape.thickness = (float)numericUpDown1.Value;
newShape.p1 = new Point(pStart.X, pStart.Y);
newShape.p2 = new Point(pEnd.X, pEnd.Y);
newShape.Draw(gl);
if ((int)openGLControl.Tag == OPENGL_DRAWN)
{
newShape.Create(gl);
listShapes.Add(newShape);
openGLControl.Tag = OPENGL_IDLE;
}
}
virtual public ShapeType Clone(OpenGL gl)
{
ShapeType t;
switch (id)
{
case Form1.SHAPE_LINE:
t = new Line();
break;
case Form1.SHAPE_CIRCLE:
t = new Circle();
break;
case Form1.SHAPE_RECTANGLE:
t = new Rectangle();
break;
case Form1.SHAPE_ELLIPSE:
t = new Ellipse();
break;
case Form1.SHAPE_EQUI_TRIANGLE:
t = new EquiTriangle();
break;
case Form1.SHAPE_EQUI_PENTAGON:
t = new EquiPentagon();
break;
case Form1.SHAPE_POLYGON:
t = new Polygon();
break;
default:
t = new EquiHexagon();
break;
}
for (int i = 0; i < controlPoints.Count; i++)
{
t.controlPoints.Add(controlPoints[i]);
}
t.Vertex = new List <Point>();
for (int i = 0; i < Vertex.Count; i++)
{
t.Vertex.Add(Vertex[i]);
}
t.AddEdge(gl);
t.done = done;
t.color = color;
t.colorFilling = colorFilling;
t.filling = filling;
t.boundaryFill = boundaryFill;
t.scanLine = scanLine;
t.Done = Done;
t.ymax = ymax;
t.ymin = ymin;
t.id = id;
t.p1 = new Point(p1.X, p1.Y);
t.p2 = new Point(p2.X, p2.Y);
return(t);
}
