/
opennurbs_revsurface.cpp
2357 lines (2152 loc) · 56.4 KB
/
opennurbs_revsurface.cpp
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/* $NoKeywords: $ */
/*
//
// Copyright (c) 1993-2012 Robert McNeel & Associates. All rights reserved.
// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert
// McNeel & Associates.
//
// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF
// MERCHANTABILITY ARE HEREBY DISCLAIMED.
//
// For complete openNURBS copyright information see <http://www.opennurbs.org>.
//
////////////////////////////////////////////////////////////////
*/
#include "opennurbs.h"
ON_OBJECT_IMPLEMENT( ON_RevSurface, ON_Surface, "A16220D3-163B-11d4-8000-0010830122F0");
void ON_RevSurface::DestroyRuntimeCache( bool bDelete )
{
ON_Surface::DestroyRuntimeCache(bDelete);
if ( 0 != m_curve )
m_curve->DestroyRuntimeCache(bDelete);
// 15 August 2003 Dale Lear
// Added the call to destroy m_bbox.
m_bbox.Destroy();
}
ON_RevSurface* ON_RevSurface::New()
{
return new ON_RevSurface();
}
ON_RevSurface* ON_RevSurface::New( const ON_RevSurface& rev_surface )
{
return new ON_RevSurface(rev_surface);
}
ON_RevSurface::ON_RevSurface() : m_curve(0),
m_axis( ON_origin, ON_zaxis ),
m_angle( 0.0, 2.0*ON_PI ),
m_t( 0.0, 2.0*ON_PI ),
m_bTransposed(0)
{
ON__SET__THIS__PTR(m_s_ON_RevSurface_ptr);
}
ON_RevSurface::~ON_RevSurface()
{
Destroy();
}
void ON_RevSurface::Destroy()
{
DestroySurfaceTree();
if ( m_curve)
{
delete m_curve;
m_curve = 0;
}
m_axis.Create( ON_origin, ON_zaxis );
m_angle.Set(0.0,2.0*ON_PI);
m_t = m_angle;
m_bTransposed = false;
m_bbox.Destroy();
}
ON_RevSurface::ON_RevSurface( const ON_RevSurface& src ) : ON_Surface(src)
{
ON__SET__THIS__PTR(m_s_ON_RevSurface_ptr);
m_curve = src.m_curve ? src.m_curve->Duplicate() : NULL;
m_axis = src.m_axis;
m_angle = src.m_angle;
m_t = src.m_t;
m_bTransposed = src.m_bTransposed;
m_bbox = src.m_bbox;
}
unsigned int ON_RevSurface::SizeOf() const
{
unsigned int sz = ON_Surface::SizeOf();
if ( m_curve )
sz += m_curve->SizeOf();
return sz;
}
ON__UINT32 ON_RevSurface::DataCRC(ON__UINT32 current_remainder) const
{
if ( m_curve )
current_remainder = m_curve->DataCRC(current_remainder);
current_remainder = ON_CRC32(current_remainder,sizeof(m_axis),&m_axis);
current_remainder = ON_CRC32(current_remainder,sizeof(m_angle),&m_angle);
current_remainder = ON_CRC32(current_remainder,sizeof(m_t),&m_t);
current_remainder = ON_CRC32(current_remainder,sizeof(m_bTransposed),&m_bTransposed);
return current_remainder;
}
ON_RevSurface& ON_RevSurface::operator=( const ON_RevSurface& src )
{
if ( this != &src )
{
Destroy();
ON_Surface::operator=(src);
if ( src.m_curve )
m_curve = src.m_curve->Duplicate();
m_axis = src.m_axis;
m_angle = src.m_angle;
m_t = src.m_t;
m_bTransposed = src.m_bTransposed;
m_bbox = src.m_bbox;
}
return *this;
}
ON_BOOL32 ON_RevSurface::SetAngleRadians(
double start_angle_radians,
double end_angle_radians
)
{
bool rc = false;
double d = end_angle_radians-start_angle_radians;
if ( d >= 0.0 )
{
if ( d <= ON_ZERO_TOLERANCE || d > 2.0*ON_PI )
{
end_angle_radians = start_angle_radians + 2.0*ON_PI;
}
m_angle.Set( start_angle_radians, end_angle_radians );
rc = true;
DestroySurfaceTree();
}
return rc;
}
ON_BOOL32 ON_RevSurface::SetAngleDegrees (
double start_angle_degrees,
double end_angle_degrees
)
{
return SetAngleRadians(
start_angle_degrees*ON_PI/180.0,
end_angle_degrees*ON_PI/180.0
);
}
ON_BOOL32 ON_RevSurface::IsValid( ON_TextLog* text_log ) const
{
if ( !m_curve )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_curve is NULL.\n");
return false;
}
if ( !m_curve->IsValid(text_log) )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_curve is not valid.\n");
return false;
}
int dim = m_curve->Dimension();
if ( dim != 3 )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_curve->Dimension()=%d (should be 3).\n",dim);
return false;
}
if ( !m_axis.IsValid() )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_axis is not valid.\n");
return false;
}
if ( !m_angle.IsIncreasing() )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_angle = (%g,%g) (should be an increasing interval)\n",
m_angle[0],m_angle[1]);
return false;
}
double length = m_angle.Length();
if ( length > 2.0*ON_PI + ON_ZERO_TOLERANCE )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_angle.Length() = %g (should be <= 2*pi radians).\n",length);
return false;
}
if ( m_angle.Length() <= ON_ZERO_TOLERANCE )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_angle.Length() = %g (should be > ON_ZERO_TOLERANCE).\n",length);
return false;
}
if ( !m_t.IsIncreasing() )
{
if ( text_log )
text_log->Print( "ON_RevSurface.m_t = (%g,%g) (should be an increasing interval)\n",
m_t[0],m_t[1]);
return false;
}
return true;
}
void ON_RevSurface::Dump( ON_TextLog& dump ) const
{
ON_Object::Dump(dump); // print class id
dump.PushIndent();
if ( m_bTransposed )
dump.Print("Paramerization: (curve,angle)\n");
else
dump.Print("Paramerization: (angle,curve)\n");
dump.Print("Axis: ");
dump.Print(m_axis.from);
dump.Print(" to ");
dump.Print(m_axis.to);
dump.Print("\n");
dump.Print("Rotation angle: %g to %g radians.\n",m_angle[0],m_angle[1]);
dump.Print("Angle evaluation parameter interval: [%g,%g].\n",m_t[0],m_t[1]);
if ( m_curve ) {
dump.Print("Revolute: \n");
dump.PushIndent();
m_curve->Dump(dump);
dump.PopIndent();
}
dump.PopIndent();
}
ON_BOOL32 ON_RevSurface::Write( ON_BinaryArchive& file ) const
{
ON_BOOL32 rc = file.Write3dmChunkVersion(2,0);
if (rc)
{
rc = file.WriteLine( m_axis );
rc = file.WriteInterval( m_angle );
rc = file.WriteInterval( m_t );
rc = file.WriteBoundingBox( m_bbox );
rc = file.WriteInt( m_bTransposed );
if ( m_curve )
{
rc = file.WriteChar((char)1);
if (rc) rc = file.WriteObject(*m_curve);
}
else
{
rc = file.WriteChar((char)0);
}
}
return rc;
}
ON_BOOL32 ON_RevSurface::Read( ON_BinaryArchive& file )
{
int major_version = 0;
int minor_version = 0;
char bHaveCurve = 0;
ON_BOOL32 rc = file.Read3dmChunkVersion(&major_version,&minor_version);
if (rc && major_version == 1)
{
rc = file.ReadLine( m_axis );
rc = file.ReadInterval( m_angle );
rc = file.ReadBoundingBox( m_bbox );
rc = file.ReadInt( &m_bTransposed );
rc = file.ReadChar( &bHaveCurve );
if ( bHaveCurve )
{
ON_Object* obj = 0;
rc = file.ReadObject(&obj);
if ( obj )
{
m_curve = ON_Curve::Cast(obj);
if ( !m_curve )
delete obj;
}
}
m_t[0] = m_angle.Min();
m_t[1] = m_angle.Max();
}
else if (rc && major_version == 2)
{
rc = file.ReadLine( m_axis );
rc = file.ReadInterval( m_angle );
rc = file.ReadInterval( m_t );
rc = file.ReadBoundingBox( m_bbox );
rc = file.ReadInt( &m_bTransposed );
rc = file.ReadChar( &bHaveCurve );
if ( bHaveCurve )
{
ON_Object* obj = 0;
rc = file.ReadObject(&obj);
if ( obj )
{
m_curve = ON_Curve::Cast(obj);
if ( !m_curve )
delete obj;
}
}
}
return rc;
}
int ON_RevSurface::Dimension() const
{
return 3;
}
ON_BOOL32 ON_RevSurface::Transform( const ON_Xform& xform )
{
DestroyRuntimeCache();
TransformUserData(xform);
ON_BOOL32 rc = (m_curve) ? m_curve->Transform(xform) : false;
ON_3dVector X, Y, Z;
Z = m_axis.Tangent();
X.PerpendicularTo( Z );
X.Unitize();
Y = ON_CrossProduct( Z, X );
if ( !m_axis.Transform(xform) )
rc = false;
ON_3dVector transZ = m_axis.Tangent();
if ( transZ.Length() == 0.0 )
{
// transformation collapsed axis
m_axis.to = m_axis.from + Z;
}
else
{
// see if axis needs to be reversed.
// (Happens with transformations that
// have negative determinant - like mirroring.)
ON_3dVector transX = xform*X;
ON_3dVector transY = xform*Y;
ON_3dVector transXxY = ON_CrossProduct( transX, transY );
double d = transXxY*transZ;
if ( d < 0.0 )
m_axis.to = m_axis.from - m_axis.Direction();
}
m_bbox.Destroy();
m_bbox = BoundingBox();
return rc;
}
ON_BOOL32 ON_RevSurface::Evaluate( // returns false if unable to evaluate
double s, // angle
double t, // curve_parameter
// evaluation parameters
int der_count, // number of derivatives (>=0)
int v_stride, // array stride (>=Dimension())
double* v, // array of length stride*(ndir+1)*(ndir+2)/2
int side, // optional - determines which quadrant to evaluate from
// 0 = default
// 1 from NE quadrant
// 2 from NW quadrant
// 3 from SW quadrant
// 4 from SE quadrant
int* hint // optional - evaluation hint (int[2]) used to speed
// repeated evaluations
) const
{
bool rc = false;
double ds = 1.0;
double x,y,z;
int i, j, k, src_i, dst_i;
ON_3dPoint pt;
if ( m_bTransposed )
{
x = s; s = t; t = x;
if ( side == 2 ) side = 4; else if ( side == 4 ) side = 2;
}
if ( m_t != m_angle )
{
if ( m_t.m_t[1] != m_t.m_t[0] )
{
ds = (m_angle.m_t[1] - m_angle.m_t[0])/(m_t.m_t[1] - m_t.m_t[0]);
x = m_t.NormalizedParameterAt(s);
y = m_angle.ParameterAt(x);
s = y;
}
}
double a = cos(s);
double b = sin(s);
const double ca[4] = {a, -b, -a, b}; // cosine derivatives
const double sa[4] = {b, a, -b, -a}; // sine derivatives
const int curve_dim = m_curve ? m_curve->Dimension() : 0;
if ( curve_dim == 2 || curve_dim == 3 )
{
int curve_side = 0;
switch(side)
{
case 1:
case 2:
curve_side = 1;
break;
case 3:
case 4:
curve_side = -1;
break;
}
rc = m_curve->Evaluate( t, der_count, v_stride, v, curve_side, hint )?true:false;
if ( rc )
{
ON_3dVector zaxis = m_axis.Tangent();
ON_3dVector xaxis, yaxis;
xaxis.PerpendicularTo(zaxis);
xaxis.Unitize();
yaxis = ON_CrossProduct(zaxis,xaxis);
// move curve derivatives to pure t partial spaces in v[]
if ( curve_dim == 2 )
{
for ( i = der_count; i >= 1; i-- )
{
// move curve derivative to proper spots
src_i = v_stride*i;
dst_i = v_stride*((i+1)*(i+2)/2 - 1);
v[dst_i++] = v[src_i++];
v[dst_i++] = 0.0;
v[dst_i] = v[src_i];
}
}
else
{
for ( i = der_count; i >= 1; i-- )
{
// move curve derivative to proper spots
src_i = v_stride*i;
dst_i = v_stride*((i+1)*(i+2)/2 - 1);
v[dst_i++] = v[src_i++];
v[dst_i++] = v[src_i++];
v[dst_i] = v[src_i];
}
}
// convert location coordinates to local frame with origin at m_axis.from
{
pt = ON_3dPoint(v)-m_axis.from;
v[0] = pt*xaxis;
v[1] = pt*yaxis;
v[2] = pt*zaxis;
}
// convert curve derivative coordinates to local frame
for ( i = 1; i <= der_count; i++ )
{
dst_i = v_stride*((i+1)*(i+2)/2 - 1);
pt = ON_3dPoint(v+dst_i); // pt = curve derivative in world coords
v[dst_i++] = pt*xaxis;
v[dst_i++] = pt*yaxis;
v[dst_i] = pt*zaxis;
}
for ( i = der_count; i >= 0; i-- )
{
// i = total order of derivative
double f = 1.0; // f = chain rule scale factor
for ( j = i; j >= 0; j-- )
{
// j = number of partials w.r.t curve parameter
// i-j = number of partials w.r.t angular parameter
dst_i = v_stride*(i*(i+1)/2 + j); //
src_i = v_stride*((j+1)*(j+2)/2 - 1); // curve derivative
k=(i-j)%4;
a = f*ca[k];
b = f*sa[k];
f *= ds;
// calculate derivative in local frame
x = a*v[src_i] - b*v[src_i+1];
y = b*v[src_i] + a*v[src_i+1];
z = (j<i) ? 0.0 : v[src_i+2];
// store answer in world coordinates
pt = x*xaxis + y*yaxis + z*zaxis;
v[dst_i++] = pt.x;
v[dst_i++] = pt.y;
v[dst_i] = pt.z;
}
}
// translate location
v[0] += m_axis.from.x;
v[1] += m_axis.from.y;
v[2] += m_axis.from.z;
if ( m_bTransposed )
{
for ( i = 1; i <= der_count; i++ )
{
for ( j = 0, k = i; j < k; j++, k-- )
{
dst_i = i*(i+1)/2;
src_i = dst_i + k;
dst_i += j;
src_i *= v_stride;
dst_i *= v_stride;
x = v[src_i]; v[src_i++] = v[dst_i]; v[dst_i++] = x;
x = v[src_i]; v[src_i++] = v[dst_i]; v[dst_i++] = x;
x = v[src_i]; v[src_i] = v[dst_i]; v[dst_i] = x;
}
}
}
}
}
return rc;
}
class ON_RevolutionTensor : public ON_TensorProduct
{
public:
ON_3dPoint O;
ON_3dVector X;
ON_3dVector Y;
ON_3dVector Z;
int DimensionA() const;
int DimensionB() const;
int DimensionC() const;
bool Evaluate( double, // a
const double*, // A
double, // b
const double*, // B
double* // C
);
};
int ON_RevolutionTensor::DimensionA() const
{
return 2;
}
int ON_RevolutionTensor::DimensionB() const
{
return 3;
}
int ON_RevolutionTensor::DimensionC() const
{
return 3;
}
bool ON_RevolutionTensor::Evaluate( double a, const double* ArcPoint, double b, const double* ShapePoint, double* SrfPoint )
{
double x, y, z, c, s, rx, ry, A[2], B[3];
if (a != 1.0) {
A[0] = a*ArcPoint[0];
A[1] = a*ArcPoint[1];
ArcPoint = A;
}
if (b != 1.0) {
B[0] = b*ShapePoint[0];
B[1] = b*ShapePoint[1];
B[2] = b*ShapePoint[2];
ShapePoint = B;
}
x = (ShapePoint[0] - O.x)*X.x + (ShapePoint[1] - O.y)*X.y + (ShapePoint[2] - O.z)*X.z;
y = (ShapePoint[0] - O.x)*Y.x + (ShapePoint[1] - O.y)*Y.y + (ShapePoint[2] - O.z)*Y.z;
z = (ShapePoint[0] - O.x)*Z.x + (ShapePoint[1] - O.y)*Z.y + (ShapePoint[2] - O.z)*Z.z;
c = ArcPoint[0];
s = ArcPoint[1];
rx = c*x - s*y;
ry = s*x + c*y;
SrfPoint[0] = O.x + rx*X.x + ry*Y.x + z*Z.x;
SrfPoint[1] = O.y + rx*X.y + ry*Y.y + z*Z.y;
SrfPoint[2] = O.z + rx*X.z + ry*Y.z + z*Z.z;
return true;
}
int ON_RevSurface::GetNurbForm(class ON_NurbsSurface& srf , double tolerance ) const
{
int rc = 0;
if ( 0 != m_curve )
{
ON_NurbsCurve a, c;
ON_Arc arc;
arc.plane.CreateFromNormal( ON_origin, ON_zaxis );
arc.radius = 1.0;
arc.SetAngleRadians(m_angle[1]-m_angle[0]);
if ( arc.GetNurbForm(a) )
{
if ( m_t.IsIncreasing() )
a.SetDomain( m_t[0], m_t[1] );
rc = m_curve->GetNurbForm(c,tolerance);
if (rc)
{
if ( 2 == c.m_dim )
{
// Increasing the dimension of a 2d curve to 3d fixes
// was added to make the Scale1D operation in
// bug # 103845 work.
ON_WARNING("ON_RevSurface.m_curve is 2-dimensional.");
c.ChangeDimension(3);
}
if ( 3 != c.m_dim )
{
ON_ERROR("ON_RevSurface.m_curve is not valid.");
return 0;
}
if ( m_angle[0] != 0.0 )
{
c.Rotate( m_angle[0], m_axis.Direction(), m_axis.from );
}
ON_RevolutionTensor rho;
rho.O = m_axis.from;
rho.Z = m_axis.Direction();
rho.Z.Unitize();
rho.X.PerpendicularTo(rho.Z);
rho.X.Unitize();
rho.Y = ON_CrossProduct(rho.Z,rho.X);
rho.Y.Unitize();
if ( !srf.TensorProduct( a, c, rho ) )
{
// Testing for false here prevents crashes
// when and was added as part of investigating
// bug # 103845. A change a few lines up
// made it so that particular bug no longer
// fails to create a nurbs surface.
return 0;
}
// make singular points "spot on"
ON_3dPoint C0 = c.PointAtStart();
ON_3dPoint C1 = c.PointAtEnd();
ON_3dPoint A0, A1;
ON_4dPoint CV;
double t0 = ON_UNSET_VALUE;
double t1 = ON_UNSET_VALUE;
if (m_axis.ClosestPointTo(C0,&t0) && ON_IsValid(t0) )
{
A0 = m_axis.PointAt(t0);
if ( C0.DistanceTo(A0) <= ON_ZERO_TOLERANCE )
{
// SouthPole
int j = 0;
for ( int i = 0; i < srf.m_cv_count[0]; i++ )
{
CV.w = srf.Weight(i,j);
CV.x = CV.w*A0.x;
CV.y = CV.w*A0.y;
CV.z = CV.w*A0.z;
srf.SetCV(i,j,CV);
}
}
}
if (m_axis.ClosestPointTo(C1,&t1) && ON_IsValid(t1) )
{
A1 = m_axis.PointAt(t1);
if ( C1.DistanceTo(A1) <= ON_ZERO_TOLERANCE )
{
// NorthPole
int j = srf.m_cv_count[1]-1;
for ( int i = 0; i < srf.m_cv_count[0]; i++ )
{
CV.w = srf.Weight(i,j);
CV.x = CV.w*A1.x;
CV.y = CV.w*A1.y;
CV.z = CV.w*A1.z;
srf.SetCV(i,j,CV);
}
}
}
if ( m_bTransposed )
srf.Transpose();
}
}
}
return (rc > 0) ? 2 : 0;
}
int ON_RevSurface::HasNurbForm() const
{
if (!IsValid())
return 0;
return 2;
}
bool ON_RevSurface::GetSurfaceParameterFromNurbFormParameter(
double nurbs_s, double nurbs_t,
double* surface_s, double* surface_t
) const
{
// NOTE: overrides ON_Surface virtual function
bool rc = (0 != m_curve);
if ( m_bTransposed )
{
double* pTemp = surface_s; surface_s = surface_t; surface_t = pTemp;
double temp = nurbs_s; nurbs_s = nurbs_t; nurbs_t = temp;
}
*surface_s = nurbs_s;
*surface_t = nurbs_t;
ON_Circle circle( ON_xy_plane, 1.0 );
ON_Arc arc( circle, m_angle );
ON_ArcCurve arc_curve(arc, m_t[0], m_t[1]);
if ( !arc_curve.GetCurveParameterFromNurbFormParameter( nurbs_s, surface_s ) )
rc = false;
if ( m_curve )
{
if (!m_curve->GetCurveParameterFromNurbFormParameter( nurbs_t, surface_t ))
rc = false;
}
return rc;
}
bool ON_RevSurface::GetNurbFormParameterFromSurfaceParameter(
double surface_s, double surface_t,
double* nurbs_s, double* nurbs_t
) const
{
// NOTE: overrides ON_Surface virtual function
bool rc = (0 != m_curve);
if ( m_bTransposed )
{
double temp = surface_s; surface_s = surface_t; surface_t = temp;
double* pTemp = nurbs_s; nurbs_s = nurbs_t; nurbs_t = pTemp;
}
*nurbs_s = surface_s;
*nurbs_t = surface_t;
ON_Circle circle( ON_xy_plane, 1.0 );
ON_Arc arc( circle, m_angle );
ON_ArcCurve arc_curve(arc, m_t[0], m_t[1]);
if ( !arc_curve.GetNurbFormParameterFromCurveParameter( surface_s, nurbs_s ) )
rc = false;
if ( m_curve )
{
if (!m_curve->GetNurbFormParameterFromCurveParameter( surface_t, nurbs_t ))
rc = false;
}
return rc;
}
ON_Curve* ON_RevSurface::IsoCurve( int dir, double c ) const
{
if ( dir < 0 || dir > 1 || !m_curve )
return NULL;
ON_Curve* crv = 0;
if ( m_bTransposed )
dir = 1-dir;
if ( dir == 0 )
{
// 8 December 2003 Chuck - fix iso extraction bug
// when m_angle[0] != 0.
ON_Circle circle;
ON_3dPoint P = m_curve->PointAt(c);
circle.plane.origin = m_axis.ClosestPointTo(P);
circle.plane.zaxis = m_axis.Tangent();
circle.plane.xaxis = P - circle.plane.origin;
circle.radius = circle.plane.xaxis.Length();
if ( !circle.plane.xaxis.Unitize() )
{
// 8 December 2003 Dale Lear - get valid zero radius
// arc/circle when revolute hits the axis.
// First: try middle of revolute for x-axis
P = m_curve->PointAt(m_curve->Domain().ParameterAt(0.5));
ON_3dPoint Q = m_axis.ClosestPointTo(P);
circle.plane.xaxis = P-Q;
if ( !circle.plane.xaxis.Unitize() )
{
// Then: just use a vector perp to zaxis
circle.plane.xaxis.PerpendicularTo(circle.plane.zaxis);
}
}
circle.plane.yaxis = ON_CrossProduct( circle.plane.zaxis, circle.plane.xaxis );
circle.plane.yaxis.Unitize();
circle.plane.UpdateEquation();
ON_Arc arc( circle, m_angle );
crv = new ON_ArcCurve(arc, m_t[0], m_t[1]);
}
else if ( dir == 1 && m_curve )
{
crv = m_curve->DuplicateCurve();
if ( crv )
{
double a = c;
if ( m_t != m_angle )
{
double t = m_t.NormalizedParameterAt(c);
a = m_angle.ParameterAt(t);
}
if ( a != 0.0 )
{
crv->Rotate( a, m_axis.Direction(), m_axis.from );
}
}
}
return crv;
}
ON_BOOL32 ON_RevSurface::Trim( int dir, const ON_Interval& domain )
{
ON_BOOL32 rc = false;
if ( dir != 0 && dir != 1 )
return false;
if ( !domain.IsIncreasing() )
return false;
if ( m_bTransposed )
dir = 1-dir;
if ( dir == 0 )
{
ON_Interval dom;
dom.Intersection(domain,m_t);
if ( !dom.IsIncreasing() || !m_t.IsIncreasing() || !m_angle.IsIncreasing() )
return false;
double t0 = m_t.NormalizedParameterAt(dom[0]);
double t1 = m_t.NormalizedParameterAt(dom[1]);
ON_Interval a;
a[0] = m_angle.ParameterAt(t0);
a[1] = m_angle.ParameterAt(t1);
double d = a.Length();
if ( fabs(d) > ON_ZERO_TOLERANCE && fabs(d) <= 2.0*ON_PI+ON_ZERO_TOLERANCE )
{
m_angle = a;
m_t = domain;
rc = true;
}
}
else if ( dir == 1 && m_curve )
{
rc = m_curve->Trim( domain );
}
if ( rc )
{
// update bounding box
ON_BoundingBox bbox0 = m_bbox;
m_bbox.Destroy();
BoundingBox();
if ( m_bbox.IsValid() && bbox0.IsValid() )
m_bbox.Intersection(bbox0);
}
return rc;
}
bool ON_RevSurface::Extend(
int dir,
const ON_Interval& domain
)
{
if ( dir != 0 && dir != 1 )
return false;
if (IsClosed(dir))
return false;
bool do_it = false;
ON_Interval dom = Domain(dir);
if (domain[0] < dom[0])
{
dom[0] = domain[0];
do_it = true;
}
if (domain[1] > dom[1])
{
dom[1] = domain[1];
do_it = true;
}
if (!do_it)
return false;
if ( m_bTransposed )
dir = 1-dir;
bool rc = false;
if ( dir == 0 )
{
double t0 = m_t.NormalizedParameterAt(dom[0]);
double t1 = m_t.NormalizedParameterAt(dom[1]);
ON_Interval a;
a[0] = m_angle.ParameterAt(t0);
a[1] = m_angle.ParameterAt(t1);
if (a.Length() > 2.0*ON_PI+ON_ZERO_TOLERANCE) a[1] = a[0]+2.0*ON_PI;
m_angle = a;
m_t = dom;
rc = true;
}
else if ( dir == 1 && m_curve )
{
rc = m_curve->Extend(dom);
}
if ( rc )
{
DestroySurfaceTree();
// update bounding box
ON_BoundingBox bbox0 = m_bbox;
m_bbox.Destroy();
BoundingBox();
}
return rc;
}
ON_BOOL32 ON_RevSurface::Split(
int dir,
double c,
ON_Surface*& west_or_south_side,
ON_Surface*& east_or_north_side
) const
{
ON_BOOL32 rc = false;
ON_RevSurface* srf_ws=ON_RevSurface::Cast(west_or_south_side);
ON_RevSurface* srf_en=ON_RevSurface::Cast(east_or_north_side);
if ( srf_ws && srf_ws == srf_en )
return false;
if ( west_or_south_side && !srf_ws )
return false;
if ( east_or_north_side && !srf_en )
return false;
if ( dir != 0 && dir != 1 )
return false;
if ( m_bTransposed )
dir = 1-dir;
ON_Curve* left_side = 0;
ON_Curve* right_side = 0;
ON_Interval left_angle, right_angle;
ON_Interval left_t, right_t;
left_angle = m_angle;
right_angle = m_angle;
left_t = m_t;
right_t = m_t;
if ( dir == 0 )
{
double t = m_t.NormalizedParameterAt(c);
if ( m_t.Includes(c,true) && 0.0 < t && t < 1.0 )
{
double a = m_angle.ParameterAt( t );
if ( m_angle.Includes(a,true) )
{
rc = true;
left_angle[1] = a;
right_angle[0] = a;
left_t[1] = c;
right_t[0] = c;
if ( srf_ws == this )
left_side = m_curve;
else
left_side = m_curve->Duplicate();
if ( srf_en == this )
right_side = m_curve;
else
right_side = m_curve->Duplicate();
}
}
}
else if ( dir == 1 && m_curve )
{
rc = m_curve->Split( c, left_side, right_side );
if ( rc )
{
if ( this == srf_ws )
{
delete m_curve;
srf_ws->m_curve = left_side;
}
else if ( this == srf_en )