/// <summary>
/// 形式指定で書き出す
/// </summary>
/// <param name="stream">ｽﾄﾘーﾑー</param>
/// <param name="format">形式</param>
/// <param name="enc">ｴﾝｺーﾃﾞｨﾝｸﾞ(PAMでは無視)</param>
/// <param name="width">幅</param>
/// <param name="height">高さ</param>
/// <param name="channel">ﾁｬﾈﾙ</param>
/// <param name="arr">ﾋﾟｸｾﾙﾃﾞﾀー</param>
public void Write(
System.IO.Stream stream, ﾌｫーﾏｯﾂ format, ｴﾝｺーﾃﾞｨﾝｸﾞ enc, int width, int height, ぉ.画素 channel, IEnumerable <ぉ> arr)
{
switch (format)
{
case ﾌｫーﾏｯﾂ.PBM:
WritePBM(stream, enc, width, height, channel, arr);
break;
case ﾌｫーﾏｯﾂ.PGM:
WritePGM(stream, enc, width, height, channel, arr);
break;
case ﾌｫーﾏｯﾂ.PPM:
WritePPM(stream, enc, width, height, arr);
break;
case ﾌｫーﾏｯﾂ.PAM:
WritePAM(stream, PNM.ﾇﾌﾟーﾘ.RGB_ALPHA, width, height, channel, arr);
break;
default:
throw new Xi.それ対応してない(format.ToString());
}
}
/// <summary>
/// PGM書き込み
/// </summary>
/// <param name="stream">ｽﾄﾘーﾑー</param>
/// <param name="format">形式</param>
/// <param name="width">幅</param>
/// <param name="height">高さ</param>
/// <param name="channel">書き込むﾁｬﾈﾙ</param>
/// <param name="arr">ﾋﾟｸｾﾙﾃﾞﾀー</param>
public void WritePGM(
System.IO.Stream stream, ｴﾝｺーﾃﾞｨﾝｸﾞ format, int width, int height, ぉ.画素 channel, IEnumerable <ぉ> arr)
{
var war = new byte[width * height];
int sr = 0;
foreach (var x in arr)
{
war[sr++] = (byte)x.ほ(channel);
}
WritePGM(stream, format, width, height, war);
}
/// <summary>
/// PPMを書き込む
/// </summary>
/// <param name="stream">ｽﾄﾘーﾑー</param>
/// <param name="format">形式</param>
/// <param name="width">幅</param>
/// <param name="height">高さ</param>
/// <param name="arr">ﾋﾟｸｾﾙﾃﾞﾀー</param>
public void WritePPM(
System.IO.Stream stream, ｴﾝｺーﾃﾞｨﾝｸﾞ format, int width, int height, IEnumerable <ぉ> arr)
{
int maxx = 0;
foreach (var k in arr)
{
maxx = Math.Max(maxx, k.R);
maxx = Math.Max(maxx, k.G);
maxx = Math.Max(maxx, k.B);
}
if (format == ｴﾝｺーﾃﾞｨﾝｸﾞ.ﾊﾞｲﾅﾘー)
{
WritePPMﾊﾞｲﾅﾘー(stream, width, height, maxx, arr);
return;
}
StringBuilder sb = new StringBuilder();
sb.Append($"P3\r\n")
.Append($"{width} {height}\r\n")
.Append($"{maxx}\r\n");
int f = 0;
foreach (var p in arr)
{
sb.Append($"{p.R} {p.G} {p.B}");
if ((++f % 16) == 0)
{
sb.Append("\r\n");
}
else
{
sb.Append(" ");
}
}
sb.Append("\r\n");
var mp3 = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
stream.Write(mp3, 0, mp3.Length);
}
/// <summary>
/// PBMを書き込む
/// </summary>
/// <param name="stream">ｽﾄﾘーﾑー</param>
/// <param name="format">形式</param>
/// <param name="width">幅</param>
/// <param name="height">高さ</param>
/// <param name="arr">ﾋﾟｸｾﾙﾃﾞﾀー(10形式)</param>
public void WritePBM(
System.IO.Stream stream, ｴﾝｺーﾃﾞｨﾝｸﾞ format, int width, int height, byte[] arr)
{
if (format == ｴﾝｺーﾃﾞｨﾝｸﾞ.ﾊﾞｲﾅﾘー)
{
WritePBMﾊﾞｲﾅﾘー(stream, width, height, arr);
return;
}
int po = 0;
var xpad = width % 8;
StringBuilder sb = new StringBuilder();
sb.Append($"P1\r\n")
.Append($"{width} {height}\r\n");
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; x += 8)
{
int bits = 8;
if ((width - x < 8))
{
bits = xpad;
}
for (int i = 0; i < bits; ++i)
{
var w = arr[po++] == 0 ? 1 : 0;
sb.Append($"{w}");
}
}
sb.Append("\r\n");
}
sb.Append("\r\n");
var mp3 = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
stream.Write(mp3, 0, mp3.Length);
}
/// <summary>
/// PGMを書き込む
/// </summary>
/// <param name="stream">ｽﾄﾘーﾑー</param>
/// <param name="format">形式</param>
/// <param name="width">幅</param>
/// <param name="height">高さ</param>
/// <param name="arr">ﾋﾟｸｾﾙﾃﾞﾀー(0~255が詰まってる物)</param>
public void WritePGM(
System.IO.Stream stream, ｴﾝｺーﾃﾞｨﾝｸﾞ format, int width, int height, byte[] arr)
{
int maxx = 0;
foreach (var k in arr)
{
maxx = Math.Max(maxx, k);
}
if (format == ｴﾝｺーﾃﾞｨﾝｸﾞ.ﾊﾞｲﾅﾘー)
{
WritePGMﾊﾞｲﾅﾘー(stream, width, height, maxx, arr);
return;
}
int po = 0;
StringBuilder sb = new StringBuilder();
sb.Append($"P2\r\n")
.Append($"{width} {height}\r\n")
.Append($"{maxx}\r\n");
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; x++)
{
sb.Append($"{arr[po++]} ");
}
sb.Append("\r\n");
}
sb.Append("\r\n");
var mp3 = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
stream.Write(mp3, 0, mp3.Length);
}
