QGIS API Documentation
2.8.2-Wien
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Decorator class which adds the functionality of estimating normals at the data points. More...
#include <NormVecDecorator.h>
Public Types | |
enum | pointState { NORMAL, BREAKLINE, ENDPOINT } |
Enumeration for the state of a point. More... |
Public Member Functions | |
NormVecDecorator () | |
NormVecDecorator (Triangulation *tin) | |
virtual | ~NormVecDecorator () |
int | addPoint (Point3D *p) override |
Adds a point to the triangulation. | |
bool | calcNormal (double x, double y, Vector3D *result) override |
Calculates the normal at a point on the surface and assigns it to 'result'. | |
bool | calcNormalForPoint (double x, double y, int point, Vector3D *result) |
Calculates the normal of a triangle-point for the point with coordinates x and y. | |
bool | calcPoint (double x, double y, Point3D *result) override |
Calculates x-, y and z-value of the point on the surface and assigns it to 'result'. | |
virtual void | eliminateHorizontalTriangles () override |
Eliminates the horizontal triangles by swapping or by insertion of new points. | |
bool | estimateFirstDerivative (int pointno) |
Estimates the first derivative a point. | |
bool | estimateFirstDerivatives (QProgressDialog *d=0) |
This method adds the functionality of estimating normals at the data points. | |
Vector3D * | getNormal (int n) const |
Returns a pointer to the normal vector for the point with the number n. | |
pointState | getState (int pointno) const |
Returns the state of the point with the number 'pointno'. | |
bool | getTriangle (double x, double y, Point3D *p1, Vector3D *v1, Point3D *p2, Vector3D *v2, Point3D *p3, Vector3D *v3) |
Finds out, in which triangle a point with coordinates x and y is and assigns the triangle points to p1, p2, p3 and the estimated normals to v1, v2, v3. | |
bool | getTriangle (double x, double y, Point3D *p1, int *ptn1, Vector3D *v1, pointState *state1, Point3D *p2, int *ptn2, Vector3D *v2, pointState *state2, Point3D *p3, int *ptn3, Vector3D *v3, pointState *state3) |
This function behaves similar to the one above. | |
virtual bool | saveAsShapefile (const QString &fileName) const override |
Saves the triangulation as a (line) shapefile. | |
void | setTriangleInterpolator (TriangleInterpolator *inter) override |
Sets an interpolator. | |
virtual bool | swapEdge (double x, double y) override |
Swaps the edge which is closest to the point with x and y coordinates (if this is possible) and forces recalculation of the concerned normals (if alreadyestimated is true) | |
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TriDecorator () | |
TriDecorator (Triangulation *t) | |
virtual | ~TriDecorator () |
virtual void | addLine (Line3D *line, bool breakline) override |
Adds a line (e.g. | |
virtual void | addTriangulation (Triangulation *t) |
Adds an association to a triangulation. | |
virtual int | getNumberOfPoints () const override |
Returns the number of points. | |
virtual int | getOppositePoint (int p1, int p2) override |
Returns the number of the point opposite to the triangle points p1, p2 (which have to be on a halfedge) | |
virtual Point3D * | getPoint (unsigned int i) const override |
Returns a pointer to the point with number i. | |
virtual QList< int > * | getPointsAroundEdge (double x, double y) override |
Returns a value list with the numbers of the four points, which would be affected by an edge swap. | |
virtual QList< int > * | getSurroundingTriangles (int pointno) override |
Returns a pointer to a value list with the information of the triangles surrounding (counterclockwise) a point. | |
bool | getTriangle (double x, double y, Point3D *p1, int *n1, Point3D *p2, int *n2, Point3D *p3, int *n3) override |
bool | getTriangle (double x, double y, Point3D *p1, Point3D *p2, Point3D *p3) override |
Finds out, in which triangle the point with coordinates x and y is and assigns the points at the vertices to 'p1', 'p2' and 'p3. | |
virtual double | getXMax () const override |
Returns the largest x-coordinate value of the bounding box. | |
virtual double | getXMin () const override |
Returns the smallest x-coordinate value of the bounding box. | |
virtual double | getYMax () const override |
Returns the largest y-coordinate value of the bounding box. | |
virtual double | getYMin () const override |
Returns the smallest x-coordinate value of the bounding box. | |
virtual void | performConsistencyTest () override |
Performs a consistency check, remove this later. | |
virtual bool | pointInside (double x, double y) override |
Returns true, if the point with coordinates x and y is inside the convex hull and false otherwise. | |
virtual void | ruppertRefinement () override |
Adds points to make the triangles better shaped (algorithm of ruppert) | |
virtual void | setBreakEdgeColor (int r, int g, int b) override |
Sets the color of the breaklines. | |
virtual void | setEdgeColor (int r, int g, int b) override |
Sets the color of the normal edges. | |
virtual void | setForcedCrossBehaviour (Triangulation::forcedCrossBehaviour b) override |
draws the points, edges and the forced lines | |
virtual void | setForcedEdgeColor (int r, int g, int b) override |
Sets the color of the forced edges. | |
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virtual | ~Triangulation () |
Protected Member Functions | |
void | setState (int pointno, pointState s) |
Sets the state (BREAKLINE, NORMAL, ENDPOINT) of a point. |
Protected Attributes | |
bool | alreadyestimated |
Is true, if the normals already have been estimated. | |
TriangleInterpolator * | mInterpolator |
Association with an interpolator object. | |
QVector< Vector3D * > * | mNormVec |
Vector that stores the normals for the points. | |
QVector< pointState > * | mPointState |
Vector who stores, it a point is not on a breakline, if it is a normal point of the breakline or if it is an endpoint of a breakline. | |
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Triangulation * | mTIN |
Association with a Triangulation object. |
Static Protected Attributes | |
static const unsigned int | mDefaultStorageForNormals = 100000 |
Decorator class which adds the functionality of estimating normals at the data points.
Definition at line 27 of file NormVecDecorator.h.
Enumeration for the state of a point.
NORMAL means, that the point is not on a breakline, BREAKLINE means that the point is on a breakline (but not an endpoint of it) and ENDPOINT means, that it is an endpoint of a breakline
Definition at line 31 of file NormVecDecorator.h.
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inline |
Definition at line 80 of file NormVecDecorator.h.
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inline |
Definition at line 85 of file NormVecDecorator.h.
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virtual |
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overridevirtual |
Adds a point to the triangulation.
Reimplemented from TriDecorator.
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overridevirtual |
Calculates the normal at a point on the surface and assigns it to 'result'.
Returns true in case of success and false in case of failure
Reimplemented from TriDecorator.
bool NormVecDecorator::calcNormalForPoint | ( | double | x, |
double | y, | ||
int | point, | ||
Vector3D * | result | ||
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Calculates the normal of a triangle-point for the point with coordinates x and y.
This is needed, if a point is on a break line and there is no unique normal stored in 'mNormVec'. Returns false, it something went wrong and true otherwise
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overridevirtual |
Calculates x-, y and z-value of the point on the surface and assigns it to 'result'.
Returns true in case of success and flase in case of failure
Reimplemented from TriDecorator.
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overridevirtual |
Eliminates the horizontal triangles by swapping or by insertion of new points.
If alreadyestimated is true, a re-estimation of the normals will be done
Reimplemented from TriDecorator.
bool NormVecDecorator::estimateFirstDerivative | ( | int | pointno | ) |
Estimates the first derivative a point.
Return true in case of succes and false otherwise
bool NormVecDecorator::estimateFirstDerivatives | ( | QProgressDialog * | d = 0 | ) |
This method adds the functionality of estimating normals at the data points.
Return true in the case of success and false otherwise
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inline |
Returns a pointer to the normal vector for the point with the number n.
Definition at line 95 of file NormVecDecorator.h.
pointState NormVecDecorator::getState | ( | int | pointno | ) | const |
Returns the state of the point with the number 'pointno'.
bool NormVecDecorator::getTriangle | ( | double | x, |
double | y, | ||
Point3D * | p1, | ||
Vector3D * | v1, | ||
Point3D * | p2, | ||
Vector3D * | v2, | ||
Point3D * | p3, | ||
Vector3D * | v3 | ||
) |
Finds out, in which triangle a point with coordinates x and y is and assigns the triangle points to p1, p2, p3 and the estimated normals to v1, v2, v3.
The vectors are normaly taken from 'mNormVec', exept if p1, p2 or p3 is a point on a breakline. In this case, the normal is calculated on-the-fly. Returns false, if something went wrong and true otherwise
bool NormVecDecorator::getTriangle | ( | double | x, |
double | y, | ||
Point3D * | p1, | ||
int * | ptn1, | ||
Vector3D * | v1, | ||
pointState * | state1, | ||
Point3D * | p2, | ||
int * | ptn2, | ||
Vector3D * | v2, | ||
pointState * | state2, | ||
Point3D * | p3, | ||
int * | ptn3, | ||
Vector3D * | v3, | ||
pointState * | state3 | ||
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This function behaves similar to the one above.
Additionally, the numbers of the points are returned (ptn1, ptn2, ptn3) as well as the pointStates of the triangle points (state1, state2, state3)
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overridevirtual |
Saves the triangulation as a (line) shapefile.
Implements Triangulation.
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protected |
Sets the state (BREAKLINE, NORMAL, ENDPOINT) of a point.
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inlineoverridevirtual |
Sets an interpolator.
Reimplemented from TriDecorator.
Definition at line 90 of file NormVecDecorator.h.
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overridevirtual |
Swaps the edge which is closest to the point with x and y coordinates (if this is possible) and forces recalculation of the concerned normals (if alreadyestimated is true)
Reimplemented from TriDecorator.
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protected |
Is true, if the normals already have been estimated.
Definition at line 68 of file NormVecDecorator.h.
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staticprotected |
Definition at line 69 of file NormVecDecorator.h.
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protected |
Association with an interpolator object.
Definition at line 71 of file NormVecDecorator.h.
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protected |
Vector that stores the normals for the points.
If 'estimateFirstDerivatives()' was called and there is a null pointer, this means, that the triangle point is on a breakline
Definition at line 73 of file NormVecDecorator.h.
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protected |
Vector who stores, it a point is not on a breakline, if it is a normal point of the breakline or if it is an endpoint of a breakline.
Definition at line 75 of file NormVecDecorator.h.