void draw_bird_tail(SKCanvas canvas, SKPoint body_one, SKColor pc, SKColor dc)
{
if (RandomUtility.CreateRandom() < tail_chance)
{
//stroke(*dc)
//fill( *pc )
int var_width = RandomUtility.CreateRandom(15, 30);
int var_x = RandomUtility.CreateRandom(-25, -15);
int var_y = RandomUtility.CreateRandom(-50, -30);
if (RandomUtility.CreateRandom() < 0.3)
{
var_y *= -1;
}
//beginShape()
var path = new SKPath {
FillType = SKPathFillType.EvenOdd
};
path.MoveTo(body_one.X, body_one.Y);
path.LineTo(body_one.X + var_width, body_one.Y);
path.LineTo(body_one.X + var_width + var_x, body_one.Y + var_y);
path.LineTo(body_one.X + var_x, body_one.Y + var_y);
path.Close();
SkiaSharpUtility.PathStroke(canvas, paint, dc, path);
SkiaSharpUtility.PathFill(canvas, paint, pc, path);
//endShape(CLOSE)
}
}
void draw_wings(SKCanvas canvas, List <SKPoint> wing, bool upper_wing = false)
{
List <SKBlendMode> modes = new List <SKBlendMode>()
{
SKBlendMode.ColorBurn, SKBlendMode.Multiply, SKBlendMode.Difference, SKBlendMode.Darken
};
SKBlendMode style = RandomUtility.GetRandomElement <SKBlendMode>(modes);
//canvas.ResetMatrix();
int canvasCacheTag = canvas.Save();
if (upper_wing)
{
canvas.Scale(1, -1);
}
paint.BlendMode = style;
//draw_curve_filled( wing )
SkiaSharpUtility.DrawSplineCurve(canvas, paint, wing, true, SKPathFillType.Winding);
paint.BlendMode = SKBlendMode.Multiply;// BLEND
canvas.Scale(-1, 1);
paint.BlendMode = style;
// draw_curve_filled(wing)
SkiaSharpUtility.DrawSplineCurve(canvas, paint, wing, true, SKPathFillType.Winding);
paint.BlendMode = SKBlendMode.Multiply;// BLEND
//canvas.ResetMatrix();
canvas.RestoreToCount(canvasCacheTag);
}
void draw_curve_filled(SKCanvas canvas, List <SKPoint> points)
{
if (points == null)
{
return;
}
SkiaSharpUtility.DrawSplineCurve(canvas, paint, points, false, SKPathFillType.Winding);
}
void draw(SKCanvas canvas)
{
float current_x = w / 2.0f - grid_x_pixels / 2.0f + 10;
float current_y = h / 2.0f - grid_y_pixels / 2.0f + body_height - 10;
var pc = RandomUtility.GetRandomElement <SKColor>(colors);
double inc = .2f * 255; // 255 * RandomUtility.CreateRandom( 0.2, 1 ); //
var dc = SkiaSharpUtility.CreateRGBColor((byte)(pc.Red - inc), (byte)(pc.Green - inc), (byte)(pc.Blue - inc));
drawBird(canvas, current_x, current_y, pc, bc, dc);
}
void draw_bird_legs(SKCanvas canvas, float x, float y)
{
//stroke(0)
//strokeCap( ROUND )
paint.StrokeCap = SKStrokeCap.Round;
paint.Color = SkiaSharpUtility.CreateRGBColor(0, 0, 0);
canvas.DrawLine(x - feet_length, y, x + feet_length, y, paint);
canvas.DrawLine(x - feet_length / 3.0f, y, x - feet_length / 3.0f - feet_length / 2.0f, y - feet_length, paint);
canvas.DrawLine(x + feet_length / 3.0f, y, x + feet_length / 3.0f - feet_length / 2.0f, y - feet_length, paint);
}
void draw_16_points(SKCanvas canvas, List <SKPoint> points)
{
if (points == null || points.Count == 0)
{
return;
}
//var blendModeCache = paint.BlendMode;
//paint.BlendMode = SKBlendMode.DstOver;
SkiaSharpUtility.DrawSplineCurve(canvas, paint, points, true, SKPathFillType.EvenOdd);
//SkiaSharpUtility.DrawPoints( canvas, paint, points );
//paint.BlendMode = blendModeCache;
}
void draw_bird_eyes(SKCanvas canvas, SKColor dc)
{
float eye_x = head_x + head_radius / 6.0f;
float eye_y = head_y - head_radius / 8.0f;
//int eye_size = 25; // diameter
float eye_radius = 12.5f;
SkiaSharpUtility.CircleStroke(canvas, paint, dc, eye_x, eye_y, eye_radius);
SkiaSharpUtility.CircleFill(canvas, paint, SKColors.White, eye_x, eye_y, eye_radius);
//SkiaSharpUtility.CircleStroke( canvas, paint, SKColors.Black, eye_x, eye_y, 5 );
SkiaSharpUtility.CircleFill(canvas, paint, SKColors.Black, eye_x, eye_y, 5);
}
public GeometricBird()
{
colors.Add(SkiaSharpUtility.CreateRGBColor(189, 208, 196));
colors.Add(SkiaSharpUtility.CreateRGBColor(154, 183, 211));
colors.Add(SkiaSharpUtility.CreateRGBColor(245, 210, 211));
colors.Add(SkiaSharpUtility.CreateRGBColor(247, 225, 211));
colors.Add(SkiaSharpUtility.CreateRGBColor(223, 204, 241));
paint = new SKPaint {
IsAntialias = true,
Style = SKPaintStyle.Stroke,
StrokeJoin = SKStrokeJoin.Round,
StrokeWidth = line_thickness
};
}
void drawAntennae(SKCanvas canvas, List <SKPoint> body, List <SKPoint> antennae)
{
List <SKPoint> points = new List <SKPoint>();
points.Add(body[2]);
//points.Add( body[2] );
for (int i = 0; i < antennae.Count; i++)
{
var a = antennae[i];
//curveTightness(curve_tightness[i])
//curveVertex(x, y)
points.Add(a);
}
SkiaSharpUtility.DrawSplineCurve(canvas, paint, points, false, SKPathFillType.EvenOdd);
}
void draw_bird_beak(SKCanvas canvas, SKColor pc, SKColor bc, SKColor dc)
{
int y_variance = RandomUtility.CreateRandom(10, 40);
int length_variance = RandomUtility.CreateRandom(50, 100);
var p1 = new SKPoint(head_x, head_y - y_variance);
var p2 = new SKPoint(head_x, head_y + y_variance);
var p3 = new SKPoint(head_x + length_variance, head_y);
paint.Style = SKPaintStyle.Stroke;
paint.Color = dc;
SkiaSharpUtility.DrawTriangle(canvas, paint, p1, p2, p3);
paint.Style = SKPaintStyle.Fill;
paint.Color = RandomUtility.CreateRandom() < body_fill_chance ? pc : bc;
SkiaSharpUtility.DrawTriangle(canvas, paint, p1, p2, p3);
}
public Stream Assemble()
{
// # Set the number of frames per second to display
// frameRate( frame_rate )
//SKCanvas canvas = new SKCanvas()
SKPath path = new SKPath();
Stream stream = null;
SKImage skImage = null;
try {
using (var skSurface = SKSurface.Create(new SKImageInfo(w, h))) {
var canvas = skSurface.Canvas;
// # Sets color space to Hue Saturation Brightness with max values of HSB respectively
// colorMode(HSB, 360, 100, 100, 100)
//background(0, 0, 100)
canvas.Clear(SKColors.White);
// rectMode(CORNER)
// draw ...
draw(canvas);
canvas.Flush();
//skImage = skSurface.Snapshot();
SKPaint paintConvert = SkiaSharpUtility.CreateDefaultPaint();
//skImage = SkiaSharpUtility.ScaleSurfaceToImage( skSurface, ImageCanvasSize, size, paintConvert );
skImage = skSurface.Snapshot();
}
// encode
SKData skData = SkiaSharpUtility.EncodeImageToSKData(skImage, "png");
stream = skData.AsStream();
}
catch (Exception ex) {
Console.WriteLine(ex.Message);
}
finally {
if (skImage != null)
{
skImage.Dispose();
}
paint.Dispose();
}
return(stream);
}
public Stream Assemble(int size = 256)
{
//SKCanvas canvas = new SKCanvas()
SKPath path = new SKPath();
Stream stream = null;
SKImage skImage = null;
try {
using (var skSurface = SKSurface.Create(new SKImageInfo(w, h))) {
var canvas = skSurface.Canvas;
canvas.Clear(bc); //set background color
// draw ...
draw(canvas);
canvas.Flush();
//skImage = skSurface.Snapshot();
SKPaint paintConvert = SkiaSharpUtility.CreateDefaultPaint();
skImage = SkiaSharpUtility.CropSurfaceToImage(skSurface, ImageCanvasSize, size, paintConvert);
}
// encode
SKData skData = SkiaSharpUtility.EncodeImageToSKData(skImage, "png");
stream = skData.AsStream();
}
catch (Exception ex) {
Console.WriteLine(ex.Message);
}
finally {
if (skImage != null)
{
skImage.Dispose();
}
paint.Dispose();
}
return(stream);
}
SKPoint draw_bird_body(SKCanvas canvas, float x, float y, SKColor pc, SKColor bc, SKColor dc)
{
// stroke(*dc)
float body_bottom = y - feet_length / 2.0f;
SKPoint body_one = new SKPoint(x - feet_length * 2.0f, body_bottom);
SKPoint body_two = new SKPoint(x + feet_length * 1.5f, body_bottom);
SKPoint body_three = new SKPoint(x + feet_length * 2.1f, body_bottom - body_height);
SKPoint body_four = new SKPoint(x, body_bottom - body_height * 1.3f);
SKPoint left_midpoint = new SKPoint((body_four.X + body_one.X) / 2, (body_four.Y + body_one.Y) / 2);
SKPoint top_midpoint = new SKPoint((body_four.X + body_three.X) / 2, (body_four.Y + body_three.Y) / 2);
SKPoint right_midpoint = new SKPoint((body_two.X + body_three.X) / 2, (body_two.Y + body_three.Y) / 2);
SKPoint bottom_midpoint = new SKPoint((body_one.X + body_two.X) / 2, (body_one.Y + body_two.Y) / 2);
//SKPoint true_midpoint = new SKPoint( ( left_midpoint.X + right_midpoint.X ) / 2, ( left_midpoint.Y + right_midpoint.Y ) / 2 );
List <SKPoint> body_points = new List <SKPoint>()
{
body_one, body_three, body_four, left_midpoint, top_midpoint, bottom_midpoint
};
//fill( *bc )
//beginShape()
var pathBody = new SKPath {
FillType = SKPathFillType.EvenOdd
};
pathBody.MoveTo(body_one);
pathBody.LineTo(body_two);
pathBody.LineTo(body_three);
pathBody.LineTo(body_four);
pathBody.Close();
SkiaSharpUtility.PathStroke(canvas, paint, dc, pathBody);
SkiaSharpUtility.PathFill(canvas, paint, bc, pathBody);
//endShape(CLOSE)
int range = RandomUtility.CreateRandom(1, 4);
for (int i = 0; i < range; i++)
{
var point_one = RandomUtility.GetRandomElement(body_points);
var point_two = RandomUtility.GetRandomElement(body_points);
var point_three = RandomUtility.GetRandomElement(body_points);
//var point_four = RandomUtility.GetRandomElement( body_points );
// fill(pc[0], pc[1], pc[2])
//beginShape()
var path = new SKPath {
FillType = SKPathFillType.EvenOdd
};
path.MoveTo(point_one);
path.LineTo(point_two);
path.LineTo(point_three);
path.Close();
SkiaSharpUtility.PathStroke(canvas, paint, dc, path);
SkiaSharpUtility.PathFill(canvas, paint, pc, path);
//endShape(CLOSE)
if (RandomUtility.CreateRandom() < 0.5)
{
draw_lines(canvas, body_points, dc);
}
} // for
head_x = x + feet_length;
head_y = body_bottom - body_height * 1.1f;
return(body_one);
}
