/**
* Set the X and Y coordinate of the point.
*
* @param x X coordinate of the point.
* @param y Y coordinate of the point.
*/
public void setXY(double x, double y) {
_touch();
if (m_attributes == null) _setToDefault();
m_attributes[0] = x;
m_attributes[1] = y;
}
/**
* Sets the value of the attribute.
*
* @param semantics The attribute semantics.
* @param ordinate The ordinate of the attribute.
* @param value Is the array to write values to. The attribute type and the number of elements
* must match the persistence type, as well as the number of components of the attribute.
*/
public void setAttribute(int semantics, int ordinate, double value) {
_touch();
int ncomps = VertexDescription.getComponentCount(semantics);
if (ncomps < ordinate) throw new IndexOutOfBoundsException();
int attributeIndex = m_description.getAttributeIndex(semantics);
if (attributeIndex < 0) {
addAttribute(semantics);
attributeIndex = m_description.getAttributeIndex(semantics);
}
if (m_attributes == null) _setToDefault();
m_attributes[m_description._getPointAttributeOffset(attributeIndex) + ordinate] = value;
}
/**
* Sets the XYZ coordinates of this point.
*
* @param pt The point to create the XYZ coordinate from.
*/
void setXYZ(Point3D pt) {
_touch();
boolean bHasZ = hasAttribute(Semantics.Z);
if (!bHasZ && !VertexDescription.isDefaultValue(Semantics.Z, pt.z)) { // add
// Z
// only
// if
// pt.z
// is
// not
// a
// default
// value.
addAttribute(Semantics.Z);
bHasZ = true;
}
if (m_attributes == null) _setToDefault();
m_attributes[0] = pt.x;
m_attributes[1] = pt.y;
if (bHasZ) m_attributes[2] = pt.z;
}
