public Color[,] RenderEffect(Color[,] buffer, Color[] palette, int eventToRender)
{
const int speedFactor = 200;
var bufferHeight = buffer.GetLength(Utils.IndexRowsOrHeight);
var bufferWidth = buffer.GetLength(Utils.IndexColsOrWidth);
Color color;
var hsv2 = new HSV();
var colorcnt = palette.Length;
var cycleLen = colorcnt * speedFactor;
var count = tbCount.Value;
if (eventToRender > (colorcnt - 1) * speedFactor * count && count < 10) {
color = palette.GetMultiColorBlend(count % 2, false);
} else {
color = palette.GetMultiColorBlend(eventToRender % cycleLen / (double)cycleLen, true);
}
var hsv = color.ToHSV();
var halfHeight = (bufferHeight - 1) / 2.0;
var halfWidth = (bufferWidth - 1) / 2.0;
for (var col = 0; col < bufferWidth; col++) {
for (var row = 0; row < bufferHeight; row++) {
hsv2.SetToHSV(hsv);
if (chkBoxHFade.Checked) hsv2.Value *= (float)(1.0 - Math.Abs(halfWidth - col) / halfWidth);
if (chkBoxVFade.Checked) hsv2.Value *= (float)(1.0 - Math.Abs(halfHeight - row) / halfHeight);
buffer[row, col] = hsv2.ToColor();
}
}
return buffer;
}
public Color[,] RenderEffect(Color[,] buffer, Color[] palette, int eventToRender)
{
var h = 0.0;
var bufferHeight = buffer.GetLength(Utils.IndexRowsOrHeight);
var bufferWidth = buffer.GetLength(Utils.IndexColsOrWidth);
var hsv = new HSV();
var maxframe = bufferHeight*2;
var frame = (int) ((bufferHeight*(double) eventToRender/200.0)%maxframe);
var offset = eventToRender/100.0;
for (var col = 0; col < bufferWidth; col++) {
for (var row = 0; row < bufferHeight; row++) {
double x1;
double y1;
double f;
switch (tbStyle.Value) {
case 1:
var n =
Math.Abs((col*col - row*row)*
Math.Sin(offset + ((col + row)*Pi2/(bufferHeight + bufferWidth))));
var d = col*col + row*row + 1;
h = n/d;
break;
case 2:
f = (frame < maxframe/2) ? frame + 1 : maxframe - frame;
x1 = (col - bufferWidth/2.0)/f;
y1 = (row - bufferHeight/2.0)/f;
h = Math.Sqrt(x1*x1 + y1*y1);
break;
case 3:
f = (frame < maxframe/2) ? frame + 1 : maxframe - frame;
f = f*0.1 + bufferHeight/60.0;
x1 = (col - bufferWidth/2.0)/f;
y1 = (row - bufferHeight/2.0)/f;
h = Math.Sin(x1)*Math.Cos(y1);
break;
}
hsv.Saturation = 1.0f;
hsv.Value = 1.0f;
var chunks = tbChunks.Value;
var skip = tbSkip.Value;
if (chunks > 1 && ((int) (h*chunks))%skip == 0) {
continue;
}
Color color;
if (cbColors.SelectedIndex == 0) {
hsv.Hue = (float) h;
color = hsv.ToColor();
}
else {
color = palette.GetMultiColorBlend(h, false);
}
buffer[row, col] = color;
}
}
return buffer;
}
private void InitFirePalette(float hue)
{
_firePalette = new Color[200];
var hsv = new HSV {Hue = hue, Saturation = 1.0f};
for (var i = 0; i < 100; i++) {
hsv.Value = i / 100.0f;
_firePalette[i] = hsv.ToColor();
}
hsv.Value = 1.0f;
for (var i = 0; i < 100; i++) {
_firePalette[i + 100] = hsv.ToColor();
hsv.Hue = (hsv.Hue + 0.00166666f) % 1f;
}
}
public static HSV CreateRangeTo(this HSV hsv1, HSV hsv2)
{
var newHsv = new HSV(RandomRange(hsv1.Hue, hsv2.Hue), RandomRange(hsv1.Saturation, hsv2.Saturation), 1.0f);
return newHsv;
}
public static HSV CreateRangeTo(this HSV hsv1, HSV hsv2)
{
var newHsv = new HSV(RandomRange(hsv1.Hue, hsv2.Hue), RandomRange(hsv1.Saturation, hsv2.Saturation), 1.0f);
return(newHsv);
}
public Color[,] RenderEffect(Color[,] buffer, Color[] palette, int eventToRender)
{
if (eventToRender == 0) _meteors.Clear();
var bufferHeight = buffer.GetLength(Utils.IndexRowsOrHeight);
var bufferWidth = buffer.GetLength(Utils.IndexColsOrWidth);
var mspeed = eventToRender - _lastRenderedEvent;
_lastRenderedEvent = eventToRender;
// create new meteors
var hsv = new HSV();
var hsv0 = palette[0].ToHSV();
var hsv1 = (palette.Length > 1 ? palette[1] : palette[0]).ToHSV();
var colorcnt = palette.Length;
var count = bufferWidth * tbCount.Value / 100;
var tailLength = (bufferHeight < 10) ? tbTrailLength.Value / 10 : bufferHeight * tbTrailLength.Value / 100;
if (tailLength < 1) tailLength = 1;
var tailStart = bufferHeight - tailLength;
if (tailStart < 1) tailStart = 1;
for (var i = 0; i < count; i++) {
var m = new MeteorClass {X = _random.Next() % bufferWidth, Y = bufferHeight - 1 - (_random.Next() % tailStart)};
switch (cbType.SelectedIndex) {
case 1:
m.HSV = hsv0.CreateRangeTo(hsv1);
break;
case 2:
m.HSV = palette[_random.Next() % colorcnt].ToHSV() ;
break;
}
_meteors.Add(m);
}
// render meteors
foreach (var meteor in _meteors) {
{
for (var ph = 0; ph < tailLength; ph++) {
switch (cbType.SelectedIndex) {
case 0:
hsv.Hue = _random.Next() % 1000 / 1000.0f;
hsv.Saturation = 1.0f;
hsv.Value = 1.0f;
break;
default:
hsv.SetToHSV(meteor.HSV);
break;
}
hsv.Value *= (float)(1.0 - (double)ph / tailLength);
if (meteor.X < 0 || meteor.X >= bufferWidth || meteor.Y + ph < 0 || meteor.Y + ph >= bufferHeight) {
continue;
}
var y = meteor.Y + (chkBoxUp.Checked ? -ph : ph);
if (y >= 0 && y < bufferHeight) {
buffer[y, meteor.X] = hsv.ToColor();
}
}
meteor.Y += (chkBoxUp.Checked ? mspeed : -mspeed);
}
}
// delete old meteors
var meteorNum = 0;
while (meteorNum < _meteors.Count) {
if (_meteors[meteorNum].HasExpired(tailLength)) {
_meteors.RemoveAt(meteorNum);
}
else {
meteorNum++;
}
}
return buffer;
}