private void Draw(ImageView imageView, int times)
{
var start = DateTime.Now;
PixelsBuffer buffer = new PixelsBuffer(600, 600);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.Transparent);
//create fill for drawing
Fill fill = new Fill(Colors.Transparent);
//fill.Opacity = 0.3;
//draw content
var coords1 = GetPath(1);
var coords2 = GetPath(0);
var coords3 = GetPath(2);
var path = GetPath();
var startDraw = DateTime.Now;
int step = 5;
for (int i = 0; i < times; i++)
{
//drawer.DrawRectangle(fill, 10, 10, 300, 300);
//drawer.DrawEllipse(fill, 200, 200, 120, 200);
//drawer.DrawPolygon(fill, coords1);
//drawer.DrawPolygon(fill, coords2);
//drawer.DrawPolygon(fill, coords3);
//draw content
//drawer.Rotate(15);
//drawer.Scale(0.3, 0.3);
//drawer.DrawPath(fill, path);
var margin = i / 10 * step;
PixelsBuffer view = buffer.CreateView(margin, margin, buffer.Width - margin * 2, buffer.Height - margin * 2, true);
DrawFrame(view, Colors.OrangeRed);
DrawLine(view, Colors.Olive);
}
DrawLion(buffer, 200, 200);
if (bmp != null)
bmp.Dispose();
bmp = BufferToBitmap.GetBitmap(buffer);
//show to screen
var icon = BitmapFactory.DecodeResource(this.Resources, Resource.Drawable.Icon);
imageView.SetImageBitmap(BufferToBitmap.Overlay(new Bitmap[] { icon, bmp }));
Android.Util.Log.Debug("Draw " + times, "Draw: " + (DateTime.Now - startDraw).TotalSeconds.ToString() + " Total: " + (DateTime.Now - start).TotalSeconds.ToString());
}
private void btnDrawEllipse_Click(object sender, EventArgs e)
{
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(400, 400);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//create fill for drawing
Fill fill = Fills.Yellow;
//draw content
drawer.DrawEllipse(fill, 200, 200, 180, 100);
//show to screen
DisplayBuffer(buffer);
}
private void btnDrawRoundRect_Click(object sender, EventArgs e)
{
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(400, 400);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//create fill for drawing
Fill fill = Fills.DarkOrange;
//draw content
drawer.DrawRoundedRectangle(fill, 50, 50, 300, 200, 15, 15);
//show to screen
DisplayBuffer(buffer);
}
/// <summary>
/// Render a star shape to buffer
/// </summary>
void DrawStar(PixelsBuffer buffer, Color color, Color background)
{
IDrawer drawer = new Drawer(buffer);
drawer.Clear(background);
Fill fill = new Fill(color);
double[] coordinates = TestFactory.Star();
TestFactory.Scale(coordinates, 2.0);
//drawer.DrawRectangle(stroke, 0, 0, buffer.Width, buffer.Height);
drawer.DrawPolygon(fill, coordinates);
}
private void btnDrawPolygon_Click(object sender, EventArgs e)
{
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(400, 400);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//create fill for drawing
Fill fill = Fills.MistyRose;
//populate polygon coordinate data
double[] coordinates = new double[]
{
30, 300,
150, 40,
300, 260,
130, 200,
//30, 300 //the last point is omitted to show that the end point is important
//for rendering stroke
};
//draw content
drawer.DrawPolygon(fill, coordinates);
//show to screen
DisplayBuffer(buffer);
}
void DrawLion()
{
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(400, 400);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//get coordinates and colors
double[][] polygons = LionPathHelper.GetLionPolygons();
Color[] colors = LionPathHelper.GetLionColors();
//iterate all polygons and draw them
double[] coordinates = null;
for (int i = 0; i < polygons.Length; i++)
{
coordinates = polygons[i];
Fill fill = new Fill(colors[i]);
drawer.DrawPolygon(fill, coordinates);
}
//show to screen
DisplayBuffer(buffer);
}
private void btnDrawTest_Click(object sender, EventArgs e)
{
if (lstTests.SelectedIndex < 0) lstTests.SelectedIndex = 0;
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(600, 600);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//create fill for drawing
Fill fill = Fills.Black;
//populate polygon coordinate data
double[] coordinates = null;
switch (lstTests.SelectedIndex)
{
case 0:
coordinates = TestFactory.Triangle();
TestFactory.Scale(coordinates, 5.0);
break;
case 1:
coordinates = TestFactory.Star();
TestFactory.Scale(coordinates, 5.0);
break;
case 2:
coordinates = TestFactory.Crown();
TestFactory.Scale(coordinates, 5.0);
break;
case 3:
coordinates = TestFactory.CirclePattern1(buffer.Width, buffer.Height);
break;
case 4:
coordinates = TestFactory.CirclePattern2(buffer.Width, buffer.Height);
break;
case 5:
coordinates = TestFactory.Complex1();
break;
case 6:
coordinates = TestFactory.Complex2();
break;
case 7:
coordinates = TestFactory.Complex3();
break;
case 8:
DrawLion();
break;
}
if (coordinates != null)
{
//draw content
drawer.DrawPolygon(fill, coordinates);
//show to screen
DisplayBuffer(buffer);
}
}
private void btnDrawPath_Click(object sender, EventArgs e)
{
//create a new drawing context
PixelsBuffer buffer = new PixelsBuffer(400, 400);
IDrawer drawer = new Drawer(buffer);
drawer.Clear(Colors.White);
//create fill for drawing
Fill fill = Fills.MistyRose;
//create path
DrawingPath path = new DrawingPath();
path.MoveTo(200, 100);
path.CurveTo(200, 350, 340, 30, 360, 200);
path.CurveTo(200, 100, 40, 200, 60, 30);
//draw content
drawer.Rotate(15);
drawer.Scale(0.3, 0.3);
drawer.DrawPath(fill, path);
//show to screen
DisplayBuffer(buffer);
}