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closes https://github.com/assimp/assimp/issues/1514: add postprocess step for scaling

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This commit is contained in:
Kim Kulling
2017-10-29 20:28:59 +01:00
parent 89d198399c
commit f49de6ecfe
9 changed files with 234 additions and 118 deletions
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150
code/IFCCurve.cpp
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@@ -43,28 +43,22 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* @brief Read profile and curves entities from IFC files
*/
#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
#include "IFCUtil.h"
namespace Assimp {
namespace IFC {
namespace {
namespace IFC {
namespace {
// --------------------------------------------------------------------------------
// Conic is the base class for Circle and Ellipse
// --------------------------------------------------------------------------------
class Conic : public Curve
{
class Conic : public Curve {
public:
// --------------------------------------------------
Conic(const IfcConic& entity, ConversionData& conv)
: Curve(entity,conv)
{
: Curve(entity,conv) {
IfcMatrix4 trafo;
ConvertAxisPlacement(trafo,*entity.Position,conv);
@@ -75,8 +69,6 @@ public:
p[2] = IfcVector3(trafo.a3,trafo.b3,trafo.c3);
}
public:
// --------------------------------------------------
bool IsClosed() const {
return true;
@@ -84,7 +76,8 @@ public:
// --------------------------------------------------
size_t EstimateSampleCount(IfcFloat a, IfcFloat b) const {
ai_assert(InRange(a) && InRange(b));
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
a *= conv.angle_scale;
b *= conv.angle_scale;
@@ -104,15 +97,11 @@ protected:
IfcVector3 location, p[3];
};
// --------------------------------------------------------------------------------
// Circle
// --------------------------------------------------------------------------------
class Circle : public Conic
{
class Circle : public Conic {
public:
// --------------------------------------------------
Circle(const IfcCircle& entity, ConversionData& conv)
: Conic(entity,conv)
@@ -120,8 +109,6 @@ public:
{
}
public:
// --------------------------------------------------
IfcVector3 Eval(IfcFloat u) const {
u = -conv.angle_scale * u;
@@ -137,20 +124,15 @@ private:
// --------------------------------------------------------------------------------
// Ellipse
// --------------------------------------------------------------------------------
class Ellipse : public Conic
{
class Ellipse : public Conic {
public:
// --------------------------------------------------
Ellipse(const IfcEllipse& entity, ConversionData& conv)
: Conic(entity,conv)
, entity(entity)
{
: Conic(entity,conv)
, entity(entity) {
// empty
}
public:
// --------------------------------------------------
IfcVector3 Eval(IfcFloat u) const {
u = -conv.angle_scale * u;
@@ -162,25 +144,18 @@ private:
const IfcEllipse& entity;
};
// --------------------------------------------------------------------------------
// Line
// --------------------------------------------------------------------------------
class Line : public Curve
{
class Line : public Curve {
public:
// --------------------------------------------------
Line(const IfcLine& entity, ConversionData& conv)
: Curve(entity,conv)
{
: Curve(entity,conv) {
ConvertCartesianPoint(p,entity.Pnt);
ConvertVector(v,entity.Dir);
}
public:
// --------------------------------------------------
bool IsClosed() const {
return false;
@@ -193,16 +168,17 @@ public:
// --------------------------------------------------
size_t EstimateSampleCount(IfcFloat a, IfcFloat b) const {
ai_assert(InRange(a) && InRange(b));
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
// two points are always sufficient for a line segment
return a==b ? 1 : 2;
}
// --------------------------------------------------
void SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const
{
ai_assert(InRange(a) && InRange(b));
void SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const {
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
if (a == b) {
out.verts.push_back(Eval(a));
@@ -227,18 +203,14 @@ private:
// --------------------------------------------------------------------------------
// CompositeCurve joins multiple smaller, bounded curves
// --------------------------------------------------------------------------------
class CompositeCurve : public BoundedCurve
{
class CompositeCurve : public BoundedCurve {
typedef std::pair< std::shared_ptr< BoundedCurve >, bool > CurveEntry;
public:
// --------------------------------------------------
CompositeCurve(const IfcCompositeCurve& entity, ConversionData& conv)
: BoundedCurve(entity,conv)
, total()
{
: BoundedCurve(entity,conv)
, total() {
curves.reserve(entity.Segments.size());
for(const IfcCompositeCurveSegment& curveSegment :entity.Segments) {
// according to the specification, this must be a bounded curve
@@ -263,8 +235,6 @@ public:
}
}
public:
// --------------------------------------------------
IfcVector3 Eval(IfcFloat u) const {
if (curves.empty()) {
@@ -287,7 +257,8 @@ public:
// --------------------------------------------------
size_t EstimateSampleCount(IfcFloat a, IfcFloat b) const {
ai_assert(InRange(a) && InRange(b));
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
size_t cnt = 0;
IfcFloat acc = 0;
@@ -306,9 +277,9 @@ public:
}
// --------------------------------------------------
void SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const
{
ai_assert(InRange(a) && InRange(b));
void SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const {
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
const size_t cnt = EstimateSampleCount(a,b);
out.verts.reserve(out.verts.size() + cnt);
@@ -330,19 +301,14 @@ public:
private:
std::vector< CurveEntry > curves;
IfcFloat total;
};
// --------------------------------------------------------------------------------
// TrimmedCurve can be used to trim an unbounded curve to a bounded range
// --------------------------------------------------------------------------------
class TrimmedCurve : public BoundedCurve
{
class TrimmedCurve : public BoundedCurve {
public:
// --------------------------------------------------
TrimmedCurve(const IfcTrimmedCurve& entity, ConversionData& conv)
: BoundedCurve(entity,conv)
@@ -409,8 +375,6 @@ public:
ai_assert(maxval >= 0);
}
public:
// --------------------------------------------------
IfcVector3 Eval(IfcFloat p) const {
ai_assert(InRange(p));
@@ -419,7 +383,8 @@ public:
// --------------------------------------------------
size_t EstimateSampleCount(IfcFloat a, IfcFloat b) const {
ai_assert(InRange(a) && InRange(b));
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
return base->EstimateSampleCount(TrimParam(a),TrimParam(b));
}
@@ -435,13 +400,11 @@ public:
}
private:
// --------------------------------------------------
IfcFloat TrimParam(IfcFloat f) const {
return agree_sense ? f + range.first : range.second - f;
}
private:
ParamRange range;
IfcFloat maxval;
@@ -454,11 +417,8 @@ private:
// --------------------------------------------------------------------------------
// PolyLine is a 'curve' defined by linear interpolation over a set of discrete points
// --------------------------------------------------------------------------------
class PolyLine : public BoundedCurve
{
class PolyLine : public BoundedCurve {
public:
// --------------------------------------------------
PolyLine(const IfcPolyline& entity, ConversionData& conv)
: BoundedCurve(entity,conv)
@@ -472,8 +432,6 @@ public:
}
}
public:
// --------------------------------------------------
IfcVector3 Eval(IfcFloat p) const {
ai_assert(InRange(p));
@@ -502,13 +460,10 @@ private:
std::vector<IfcVector3> points;
};
} // anon
// ------------------------------------------------------------------------------------------------
Curve* Curve :: Convert(const IFC::IfcCurve& curve,ConversionData& conv)
{
Curve* Curve::Convert(const IFC::IfcCurve& curve,ConversionData& conv) {
if(curve.ToPtr<IfcBoundedCurve>()) {
if(const IfcPolyline* c = curve.ToPtr<IfcPolyline>()) {
return new PolyLine(*c,conv);
@@ -519,9 +474,6 @@ Curve* Curve :: Convert(const IFC::IfcCurve& curve,ConversionData& conv)
if(const IfcCompositeCurve* c = curve.ToPtr<IfcCompositeCurve>()) {
return new CompositeCurve(*c,conv);
}
//if(const IfcBSplineCurve* c = curve.ToPtr<IfcBSplineCurve>()) {
// return new BSplineCurve(*c,conv);
//}
}
if(curve.ToPtr<IfcConic>()) {
@@ -543,8 +495,7 @@ Curve* Curve :: Convert(const IFC::IfcCurve& curve,ConversionData& conv)
#ifdef ASSIMP_BUILD_DEBUG
// ------------------------------------------------------------------------------------------------
bool Curve :: InRange(IfcFloat u) const
{
bool Curve::InRange(IfcFloat u) const {
const ParamRange range = GetParametricRange();
if (IsClosed()) {
return true;
@@ -555,24 +506,23 @@ bool Curve :: InRange(IfcFloat u) const
#endif
// ------------------------------------------------------------------------------------------------
IfcFloat Curve :: GetParametricRangeDelta() const
{
IfcFloat Curve::GetParametricRangeDelta() const {
const ParamRange& range = GetParametricRange();
return std::abs(range.second - range.first);
}
// ------------------------------------------------------------------------------------------------
size_t Curve :: EstimateSampleCount(IfcFloat a, IfcFloat b) const
{
ai_assert(InRange(a) && InRange(b));
size_t Curve::EstimateSampleCount(IfcFloat a, IfcFloat b) const {
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
// arbitrary default value, deriving classes should supply better suited values
return 16;
}
// ------------------------------------------------------------------------------------------------
IfcFloat RecursiveSearch(const Curve* cv, const IfcVector3& val, IfcFloat a, IfcFloat b, unsigned int samples, IfcFloat threshold, unsigned int recurse = 0, unsigned int max_recurse = 15)
{
IfcFloat RecursiveSearch(const Curve* cv, const IfcVector3& val, IfcFloat a, IfcFloat b,
unsigned int samples, IfcFloat threshold, unsigned int recurse = 0, unsigned int max_recurse = 15) {
ai_assert(samples>1);
const IfcFloat delta = (b-a)/samples, inf = std::numeric_limits<IfcFloat>::infinity();
@@ -594,7 +544,8 @@ IfcFloat RecursiveSearch(const Curve* cv, const IfcVector3& val, IfcFloat a, Ifc
}
}
ai_assert(min_diff[0] != inf && min_diff[1] != inf);
ai_assert( min_diff[ 0 ] != inf );
ai_assert( min_diff[ 1 ] != inf );
if ( std::fabs(a-min_point[0]) < threshold || recurse >= max_recurse) {
return min_point[0];
}
@@ -615,15 +566,15 @@ IfcFloat RecursiveSearch(const Curve* cv, const IfcVector3& val, IfcFloat a, Ifc
}
// ------------------------------------------------------------------------------------------------
bool Curve :: ReverseEval(const IfcVector3& val, IfcFloat& paramOut) const
bool Curve::ReverseEval(const IfcVector3& val, IfcFloat& paramOut) const
{
// note: the following algorithm is not guaranteed to find the 'right' parameter value
// in all possible cases, but it will always return at least some value so this function
// will never fail in the default implementation.
// XXX derive threshold from curve topology
const IfcFloat threshold = 1e-4f;
const unsigned int samples = 16;
static const IfcFloat threshold = 1e-4f;
static const unsigned int samples = 16;
const ParamRange& range = GetParametricRange();
paramOut = RecursiveSearch(this,val,range.first,range.second,samples,threshold);
@@ -632,9 +583,9 @@ bool Curve :: ReverseEval(const IfcVector3& val, IfcFloat& paramOut) const
}
// ------------------------------------------------------------------------------------------------
void Curve :: SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const
{
ai_assert(InRange(a) && InRange(b));
void Curve::SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const {
ai_assert( InRange( a ) );
ai_assert( InRange( b ) );
const size_t cnt = std::max(static_cast<size_t>(0),EstimateSampleCount(a,b));
out.verts.reserve( out.verts.size() + cnt + 1);
@@ -646,16 +597,15 @@ void Curve :: SampleDiscrete(TempMesh& out,IfcFloat a, IfcFloat b) const
}
// ------------------------------------------------------------------------------------------------
bool BoundedCurve :: IsClosed() const
{
bool BoundedCurve::IsClosed() const {
return false;
}
// ------------------------------------------------------------------------------------------------
void BoundedCurve :: SampleDiscrete(TempMesh& out) const
{
void BoundedCurve::SampleDiscrete(TempMesh& out) const {
const ParamRange& range = GetParametricRange();
ai_assert(range.first != std::numeric_limits<IfcFloat>::infinity() && range.second != std::numeric_limits<IfcFloat>::infinity());
ai_assert( range.first != std::numeric_limits<IfcFloat>::infinity() );
ai_assert( range.second != std::numeric_limits<IfcFloat>::infinity() );
return SampleDiscrete(out,range.first,range.second);
}