private void canvasPanel_MouseDown(object sender, MouseEventArgs e)
{
prevMouseLoc = new Point(e.X, e.Y);
tempShape = new Shape(toolstrip_combobox.SelectedIndex, fillType, prevMouseLoc, prevMouseLoc, fillColor, lineColor, dashStyle, lineWidth);
toolstrip_undo.Visible = true;
undoToolStripMenuItem.Enabled = true;
toolstrip_redo.Visible = false;
redoToolStripMenuItem.Enabled = false;
redoShapes = new List<Shape>();
unsavedChanges = true;
}
private void canvasPanel_MouseUp(object sender, MouseEventArgs e)
{
if (prevMouseLoc.X != e.X && prevMouseLoc.Y != e.Y && tempShape != null){
shapes.Add(tempShape);
tempShape = null;
unsavedChanges = true;
}
}
private void drawShape(Graphics e, Shape shape)
{
Action drawRectangle = () =>
{
Point[] points = new Point[4];
points[0] = new Point(shape.startPoint.X, shape.startPoint.Y);
points[1] = new Point(shape.endPoint.X, shape.startPoint.Y);
points[2] = new Point(shape.endPoint.X, shape.endPoint.Y);
points[3] = new Point(shape.startPoint.X, shape.endPoint.Y);
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
Action drawEllipse = () =>
{
Point endPoint = new Point(shape.endPoint.X - shape.startPoint.X, shape.endPoint.Y - shape.startPoint.Y);
if (shape.getFill() == 1)
{
e.FillEllipse(shape.getSolidBrush(), shape.startPoint.X, shape.startPoint.Y, endPoint.X, endPoint.Y);
}
e.DrawEllipse(shape.getPen(), shape.startPoint.X, shape.startPoint.Y, endPoint.X, endPoint.Y);
};
Action drawRightTriangle = () =>
{
Point[] points = new Point[3];
points[0] = new Point(shape.startPoint.X, shape.startPoint.Y);
points[1] = new Point(shape.startPoint.X, shape.endPoint.Y);
points[2] = new Point(shape.endPoint.X, shape.endPoint.Y);
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
Action drawDiamond = () =>
{
Point[] points = new Point[4];
points[0] = new Point((shape.startPoint.X + shape.endPoint.X) / 2, shape.startPoint.Y);
points[1] = new Point(shape.endPoint.X, (shape.startPoint.Y + shape.endPoint.Y) / 2);
points[2] = new Point((shape.startPoint.X + shape.endPoint.X) / 2, shape.endPoint.Y);
points[3] = new Point(shape.startPoint.X, (shape.startPoint.Y + shape.endPoint.Y) / 2);
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
Action drawIsocelesTriangle = () =>
{
Point[] points = new Point[3];
points[0] = new Point((shape.startPoint.X + shape.endPoint.X) / 2, shape.startPoint.Y);
points[1] = new Point(shape.startPoint.X, shape.endPoint.Y);
points[2] = new Point(shape.endPoint.X, shape.endPoint.Y);
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
Action drawHexagon = () =>
{
Point[] points = new Point[6];
Point c = new Point(shape.startPoint.X + ((shape.endPoint.X - shape.startPoint.X) / 2), shape.startPoint.Y + ((shape.endPoint.Y - shape.startPoint.Y) / 2));
double a = Math.PI * 2 / 6;
double rotate = Math.PI * 2 / 12;
double r = Math.Abs(shape.endPoint.X - shape.startPoint.X) / 2;
points[0] = new Point(c.X + (int)(Math.Sin(a * 0 + rotate) * r), c.Y + (int)(Math.Cos(a * 0 + rotate) * r));
points[1] = new Point(c.X + (int)(Math.Sin(a * 1 + rotate) * r), c.Y + (int)(Math.Cos(a * 1 + rotate) * r));
points[2] = new Point(c.X + (int)(Math.Sin(a * 2 + rotate) * r), c.Y + (int)(Math.Cos(a * 2 + rotate) * r));
points[3] = new Point(c.X + (int)(Math.Sin(a * 3 + rotate) * r), c.Y + (int)(Math.Cos(a * 3 + rotate) * r));
points[4] = new Point(c.X + (int)(Math.Sin(a * 4 + rotate) * r), c.Y + (int)(Math.Cos(a * 4 + rotate) * r));
points[5] = new Point(c.X + (int)(Math.Sin(a * 5 + rotate) * r), c.Y + (int)(Math.Cos(a * 5 + rotate) * r));
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
Action drawPentagon = () =>
{
Point[] points = new Point[5];
Point c = new Point(shape.startPoint.X + ((shape.endPoint.X - shape.startPoint.X) / 2), shape.startPoint.Y + ((shape.endPoint.Y - shape.startPoint.Y) / 2));
double a = Math.PI * 2 / 5;
double rotate = Math.PI * 2 / 10;
double r = Math.Abs(shape.endPoint.X - shape.startPoint.X) / 2;
points[0] = new Point(c.X + (int)(Math.Sin(a * 0 + rotate) * r), c.Y + (int)(Math.Cos(a * 0 + rotate) * r));
points[1] = new Point(c.X + (int)(Math.Sin(a * 1 + rotate) * r), c.Y + (int)(Math.Cos(a * 1 + rotate) * r));
points[2] = new Point(c.X + (int)(Math.Sin(a * 2 + rotate) * r), c.Y + (int)(Math.Cos(a * 2 + rotate) * r));
points[3] = new Point(c.X + (int)(Math.Sin(a * 3 + rotate) * r), c.Y + (int)(Math.Cos(a * 3 + rotate) * r));
points[4] = new Point(c.X + (int)(Math.Sin(a * 4 + rotate) * r), c.Y + (int)(Math.Cos(a * 4 + rotate) * r));
if (shape.getFill() == 1)
{
e.FillPolygon(shape.getSolidBrush(), points);
}
e.DrawPolygon(shape.getPen(), points);
};
switch (shape.getType())
{
case 0:
drawRectangle(); break;
case 1:
drawEllipse(); break;
case 2:
drawRightTriangle(); break;
case 3:
drawDiamond(); break;
case 4:
drawIsocelesTriangle(); break;
case 5:
drawHexagon(); break;
case 6:
drawPentagon(); break;
}
}