public static void Draw(Canvas c, Bitmap input, string param)
{
// !!!{{ TODO: put your drawing code here
int wq = c.Width / 4;
int hq = c.Height / 4;
int minq = Math.Min(wq, hq);
double t;
int i, j;
c.Clear(Color.Black);
// example of passing numerical value through string param:
double w = 1.0;
if (Double.TryParse(param, NumberStyles.Float, CultureInfo.InvariantCulture, out w))
{
c.SetPenWidth((float)w);
}
// 1st quadrant - anti-aliased filled squares..
c.SetAntiAlias(true);
const int MAX_FILLED = 32;
for (i = 0, t = 0.0; i < MAX_FILLED; i++, t += 0.65)
{
float r = 2.0f + i * (minq - 5.0f) / MAX_FILLED;
c.SetColor(Color.FromArgb((i * 255) / MAX_FILLED, 240, 255 - (i * 255) / MAX_FILLED));
c.FillRectangle((float)(wq + r * Math.Sin(t)),
(float)(hq + r * Math.Cos(t)),
(float)(r * 0.3),
(float)(r * 0.3),
(float)Arith.RadianToDegree(t));
}
// 2nd quadrant - anti-aliased squares..
const int MAX_DRAWN = 60;
c.SetColor(Color.LemonChiffon);
for (i = 0; i < MAX_DRAWN; i++)
{
t = i / (double)MAX_DRAWN;
c.DrawRectangle((float)(c.Width - t * 0.9 * (wq + wq)),
(float)(t * (hq + hq)),
(float)(t * minq),
(float)(t * minq),
i * 360.0f / MAX_DRAWN);
}
// 4th quadrant - jaggy squares..
c.SetColor(Color.LightCoral);
c.SetAntiAlias(false);
for (i = 0; i < MAX_DRAWN; i++)
{
t = i / (double)MAX_DRAWN;
c.DrawRectangle((float)(c.Width - t * 0.9 * (wq + wq)),
(float)(c.Height - t * (hq + hq)),
(float)(t * minq),
(float)(t * minq),
i * 360.0f / MAX_DRAWN);
}
// 3rd quadrant - jaggy filled squares..
const int MAX_MATRIX = 12;
for (j = 0; j < MAX_MATRIX; j++)
{
for (i = 0; i < MAX_MATRIX; i++)
{
c.SetColor(((i ^ j) & 1) == 0 ? Color.White : Color.Blue);
c.FillRectangle((float)(wq + (i - MAX_MATRIX / 2) * (wq * 1.8f / MAX_MATRIX)),
(float)(3 * hq + (j - MAX_MATRIX / 2) * (hq * 1.7f / MAX_MATRIX)),
(((i ^ j) & 15) + 1.0f) / MAX_MATRIX * minq * 0.08f,
(((i ^ j) & 15) + 1.0f) / MAX_MATRIX * minq * 0.08f,
(i + j) * 360.0f / MAX_MATRIX);
}
}
// !!!}}
}
/// <summary>
/// Draw single animation frame.
/// </summary>
/// <param name="c">Canvas to draw to.</param>
/// <param name="time">Current time in seconds.</param>
/// <param name="start">Start time (t0)</param>
/// <param name="end">End time (for animation length normalization).</param>
public static void DrawFrame(Canvas c, double time, double start, double end)
{
// !!!{{ TODO: put your drawing code here
int wq = c.Width / 4;
int hq = c.Height / 4;
int minq = Math.Min(wq, hq);
double t;
int i, j;
float dx = wq * 4.0f * Arith.Clamp((float)((time - start) / (end - start)), 0.0f, 1.0f);
c.Clear(Color.Black);
// 1st quadrant - anti-aliased filled squares..
c.SetAntiAlias(true);
const int MAX_FILLED = 32;
for (i = 0, t = 0.0; i < MAX_FILLED; i++, t += 0.65)
{
float r = 2.0f + i * (minq - 5.0f) / MAX_FILLED;
c.SetColor(Color.FromArgb((i * 255) / MAX_FILLED, 240, 255 - (i * 255) / MAX_FILLED));
c.FillRectangle(dx + (float)(wq + r * Math.Sin(t)),
(float)(hq + r * Math.Cos(t)),
(float)(r * 0.3),
(float)(r * 0.3),
(float)Arith.RadianToDegree(t));
}
// 2nd quadrant - star-shaped polygon
const int MAX_CORNERS = 32;
float[] v = new float[MAX_CORNERS * 4];
double dt = Math.PI / MAX_CORNERS;
double r1 = minq * 0.9;
double r2 = minq * 0.4;
for (i = 0, t = 0.0; i < MAX_CORNERS; i++)
{
v[4 * i] = dx + (float)(wq * 3 + r1 * Math.Sin(t));
v[4 * i + 1] = (float)(hq + r1 * Math.Cos(t));
t += dt;
v[4 * i + 2] = dx + (float)(wq * 3 + r2 * Math.Sin(t));
v[4 * i + 3] = (float)(hq + r2 * Math.Cos(t));
t += dt;
}
c.SetColor(Color.LightSalmon);
c.FillPolygon(v);
// 3rd quadrant - jaggy filled squares..
c.SetAntiAlias(false);
const int MAX_MATRIX = 12;
for (j = 0; j < MAX_MATRIX; j++)
{
for (i = 0; i < MAX_MATRIX; i++)
{
c.SetColor(((i ^ j) & 1) == 0 ? Color.White : Color.Blue);
c.FillRectangle(dx + (float)(wq + (i - MAX_MATRIX / 2) * (wq * 1.8f / MAX_MATRIX)),
(float)(3 * hq + (j - MAX_MATRIX / 2) * (hq * 1.7f / MAX_MATRIX)),
(((i ^ j) & 15) + 1.0f) / MAX_MATRIX * minq * 0.08f,
(((i ^ j) & 15) + 1.0f) / MAX_MATRIX * minq * 0.08f,
(i + j) * 360.0f / MAX_MATRIX);
}
}
// !!!}}
}