/// <summary>
/// Draws an entire bitmap to a grid of NeoPixels
/// </summary>
/// <param name="bm">the bitmap to draw</param>
/// <param name="GetIndexFunc">a "function pointer" so the user can specify how the grid is arranged. for generic arrangements, try using "GridArrangement" instead</param>
public void Write(Bitmap bm, GetIndexDelegate GetIndexFunc)
{
// note: top left corner of a bitmap is (0,0)
int count = bm.Width * bm.Height;
byte[] barr = new byte[count * 3];
for (int x = 0; x < bm.Width; x++)
{
for (int y = 0; y < bm.Height; y++)
{
Color c = bm.GetPixel(x, y);
int idx = GetIndexFunc(x, y, bm.Width, bm.Height);
barr[idx * 3 + 0] = ColorUtility.GetGValue(c);
barr[idx * 3 + 1] = ColorUtility.GetRValue(c);
barr[idx * 3 + 2] = ColorUtility.GetBValue(c);
}
}
NeoPixelNative.Write(barr, count, (UInt32)pin);
/* // this is what the code would've looked like if I didn't care about RAM memory so much
* Color[] pix = new Color[bm.Width * bm.Height];
* for (int x = 0; x < bm.Width; x++)
* {
* for (int y = 0; y < bm.Height; y++)
* {
* Color c = bm.GetPixel(x, y);
* int idx = GetIndexFunc(x, y, bm.Width, bm.Height);
* pix[idx] = c;
* }
* }
*
* Write(pix);
* //*/
}
public static MathExpr Create(string formula, GetIndexDelegate var)
{
MathExpr expr = new MathExpr();
string[] colWords = SplitWords.Split(formula);
var mathFuncs = new[] {
"cos", "sin", "tan", "cot", "abs", "sgn",
"sqrt", "log", "exp", "asin", "acos", "atan",
"acot", "sinh", "cosh", "tanh", "coth", "log10",
"step"
};
foreach (string s in colWords)
{
var word = (s ?? "").Trim();
if (string.IsNullOrEmpty(word))
{
continue;
}
if (!PatNumber.IsMatch(word)) // if it isn't a number
// its a word
{
if (Array.IndexOf(mathFuncs, word.ToLower()) == -1)
{
Variable variable = expr.jeb.AddVariable(word, 0.0d);
expr.variables[variable] = var(word);
}
else // it's a function
{
// it's an upper case function, convert to lower case
if (!word.Equals(word.ToLower()))
{
formula = formula.Replace(word, word.ToLower());
}
}
}
}
try {
expr.jeb.Parse(formula);
}
catch (ParseException) {
return(null);
}
return(expr);
}
public ContinuousRasterHelper(IContinuousRaster <VertexType> raster)
: base(raster)
{
if (raster == null)
{
throw new ArgumentNullException("raster");
}
Raster = raster;
IRasterVertexHandle <VertexType> vertexHandle = Raster.CreateVertexHandle();
GetIndexDelegate getVertexIndexDelegate = delegate(int[] position) { return(vertexHandle.MoveTo(position).Vertex.RowIndex); };
SetGetIndexDelegate(getVertexIndexDelegate);
}
protected void SetGetIndexDelegate(GetIndexDelegate getIndexDelegate)
{
m_getIndexDelegate = getIndexDelegate;
DetermineTileGeometry();
}
