/// <summary>
/// 生产SHP
/// </summary>
/// <param name="matrix"></param>
/// <param name="fullname"></param>
private void ToSHP(ByteMatrix matrix, string fullname)
{
double size = 6;
SHPHandle hSHP = null;
DBFHandle hDBF = null;
try {
SHPT shptype = SHPT.POLYGON;
// 创建SHP文件
hSHP = SHPHandle.Create(fullname, shptype);
if (hSHP == null)
{
throw new Exception("Unable to create SHP:" + fullname);
}
// 创建DBF文件
hDBF = DBFHandle.Create(fullname);
if (hDBF == null)
{
throw new Exception("Unable to create DBF:" + fullname);
}
if (hDBF.AddField("_row", FT.Integer, 10, 0) < 0)
{
throw new Exception("DBFHandle.AddField(_row,Integer,10,0) failed.");
}
if (hDBF.AddField("_col", FT.Integer, 10, 0) < 0)
{
throw new Exception("DBFHandle.AddField(_col,Integer,10,0) failed.");
}
// 绘制二维码
int record_index = 0;
for (int row = 0; row < matrix.Width; row++)
{
for (int col = 0; col < matrix.Height; col++)
{
if (matrix[row, col] == 0)
{
continue;
}
// 构造SHPRecord
SHPRecord record = new SHPRecord()
{
ShapeType = shptype
};
// 分段开始
record.Parts.Add(record.Points.Count);
// 添加4个角点
double ox = row * size + 300;
double oy = matrix.Height * size - col * size;
record.Points.Add(new double[] { ox, oy, 0, 0 });
record.Points.Add(new double[] { ox + size, oy, 0, 0 });
record.Points.Add(new double[] { ox + size, oy + size, 0, 0 });
record.Points.Add(new double[] { ox, oy + size, 0, 0 });
// 写图形
int num_parts = record.NumberOfParts; // 总共分为几段
int[] parts = record.Parts.ToArray(); // 每一个分段的起始节点索引
int num_points = record.NumberOfPoints; // 所有节点总数
double[] xs = new double[num_points]; // 所有节点X坐标
double[] ys = new double[num_points]; // 所有节点Y坐标
double[] zs = new double[num_points]; // 所有节点Z坐标
double[] ms = new double[num_points]; // 所有节点M坐标
for (int n = 0; n < num_points; n++)
{
xs[n] = record.Points[n][0]; // X坐标
ys[n] = record.Points[n][1]; // Y坐标
zs[n] = record.Points[n][2]; // Z值
ms[n] = record.Points[n][3]; // M值
}
// PS: 节点 "逆时针"是加 "顺时针"是减
SHPObject shpobj = SHPObject.Create(shptype, // 图形类别
-1, // 图形ID -1表示新增
num_parts, // 总共分为几段
parts, // 每一个分段的起始节点索引
null, // 每段的类别
num_points, // 所有节点总数
xs, // 所有节点的X坐标
ys, // 所有节点的Y坐标
zs, // 所有节点的Z值
ms); // 所有节点的M值
hSHP.WriteObject(-1, shpobj);
// 写属性
//hDBF.WriteNULLAttribute(record_index, 0);
hDBF.WriteDoubleAttribute(record_index, 0, row);
hDBF.WriteDoubleAttribute(record_index, 1, col);
record_index++;
}
}
}
catch (Exception) {
throw;
}
finally {
if (hSHP != null)
{
hSHP.Close();
}
if (hDBF != null)
{
hDBF.Close();
}
}
}
/// <summary>
/// Write a small multipoint file.
/// </summary>
static void Test_WriteMultiPoints( SHPT nSHPType, string pszFilename )
{
SHPHandle hSHPHandle;
SHPObject psShape;
double[] x = new double[4], y = new double[4];
double[] z = new double[4], m = new double[4];
int i, iShape;
hSHPHandle = SHPHandle.Create( pszFilename, nSHPType );
for( iShape = 0; iShape < 3; iShape++ )
{
for( i = 0; i < 4; i++ )
{
x[i] = iShape * 10 + i + 1.15;
y[i] = iShape * 10 + i + 2.25;
z[i] = iShape * 10 + i + 3.35;
m[i] = iShape * 10 + i + 4.45;
}
psShape = SHPObject.Create( nSHPType, -1, 0, null, null,
4, x, y, z, m );
hSHPHandle.WriteObject( -1, psShape );
psShape = null;
}
hSHPHandle.Close();
}
/// <summary>
/// Write a small point file.
/// </summary>
static void Test_WritePoints( SHPT nSHPType, string pszFilename )
{
SHPHandle hSHPHandle;
SHPObject psShape;
double[] x = new double[1], y = new double[1];
double[] z = new double[1], m = new double[1];
hSHPHandle = SHPHandle.Create( pszFilename, nSHPType );
x[0] = 1.0;
y[0] = 2.0;
z[0] = 3.0;
m[0] = 4.0;
psShape = SHPObject.Create( nSHPType, -1, 0, null, null,
1, x, y, z, m );
hSHPHandle.WriteObject( -1, psShape );
psShape = null;
x[0] = 10.0;
y[0] = 20.0;
z[0] = 30.0;
m[0] = 40.0;
psShape = SHPObject.Create( nSHPType, -1, 0, null, null,
1, x, y, z, m );
hSHPHandle.WriteObject( -1, psShape );
psShape = null;
hSHPHandle.Close();
}
/// <summary>
/// Write a small arc or polygon file.
/// </summary>
static void Test_WriteArcPoly( SHPT nSHPType, string pszFilename )
{
SHPHandle hSHPHandle;
SHPObject psShape;
double[] x = new double[100], y = new double[100];
double[] z = new double[100], m = new double[100];
int[] anPartStart = new int[100];
int[] anPartType = new int[100], panPartType;
int i, iShape;
hSHPHandle = SHPHandle.Create( pszFilename, nSHPType );
if( nSHPType == SHPT.MULTIPATCH )
panPartType = anPartType;
else
panPartType = null;
for( iShape = 0; iShape < 3; iShape++ )
{
x[0] = 1.0;
y[0] = 1.0+iShape*3;
x[1] = 2.0;
y[1] = 1.0+iShape*3;
x[2] = 2.0;
y[2] = 2.0+iShape*3;
x[3] = 1.0;
y[3] = 2.0+iShape*3;
x[4] = 1.0;
y[4] = 1.0+iShape*3;
for( i = 0; i < 5; i++ )
{
z[i] = iShape * 10 + i + 3.35;
m[i] = iShape * 10 + i + 4.45;
}
psShape = SHPObject.Create( nSHPType, -1, 0, null, null,
5, x, y, z, m );
hSHPHandle.WriteObject( -1, psShape );
psShape = null;
}
/* -------------------------------------------------------------------- */
/* Do a multi part polygon (shape). We close it, and have two */
/* inner rings. */
/* -------------------------------------------------------------------- */
x[0] = 0.0;
y[0] = 0.0;
x[1] = 0;
y[1] = 100;
x[2] = 100;
y[2] = 100;
x[3] = 100;
y[3] = 0;
x[4] = 0;
y[4] = 0;
x[5] = 10;
y[5] = 20;
x[6] = 30;
y[6] = 20;
x[7] = 30;
y[7] = 40;
x[8] = 10;
y[8] = 40;
x[9] = 10;
y[9] = 20;
x[10] = 60;
y[10] = 20;
x[11] = 90;
y[11] = 20;
x[12] = 90;
y[12] = 40;
x[13] = 60;
y[13] = 40;
x[14] = 60;
y[14] = 20;
for( i = 0; i < 15; i++ )
{
z[i] = i;
m[i] = i*2;
}
anPartStart[0] = 0;
anPartStart[1] = 5;
anPartStart[2] = 10;
anPartType[0] = (int)SHPP.RING;
anPartType[1] = (int)SHPP.INNERRING;
anPartType[2] = (int)SHPP.INNERRING;
psShape = SHPObject.Create( nSHPType, -1, 3, anPartStart, panPartType,
15, x, y, z, m );
hSHPHandle.WriteObject( -1, psShape );
psShape = null;
hSHPHandle.Close();
}
