![]() |
http://www.sim.no http://www.coin3d.org |
The SoLineSet class is used to render and organize non-indexed polylines.Polylines are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 2], this node would specify a line through coordinates 0, 1 and 2, a line through coordinates 3, 4, 5 and 6, and finally a single line segment between coordinates 7 and 8. More...
#include <Inventor/nodes/SoLineSet.h>
Public Member Functions | |
virtual SoType | getTypeId (void) const |
SoLineSet (void) | |
virtual void | GLRender (SoGLRenderAction *action) |
virtual void | getBoundingBox (SoGetBoundingBoxAction *action) |
virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action) |
Static Public Member Functions | |
static SoType | getClassTypeId (void) |
static void | initClass (void) |
Public Attributes | |
SoMFInt32 | numVertices |
![]() | |
SoSFInt32 | startIndex |
![]() | |
SoSFNode | vertexProperty |
Protected Member Functions | |
virtual const SoFieldData * | getFieldData (void) const |
virtual | ~SoLineSet () |
virtual void | generatePrimitives (SoAction *action) |
virtual void | computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er) |
![]() | |
SoNonIndexedShape (void) | |
virtual | ~SoNonIndexedShape () |
void | computeCoordBBox (SoAction *action, int numVertices, SbBox3f &box, SbVec3f ¢er) |
void | fixNumVerticesPointers (SoState *state, const int32_t *&start, const int32_t *&end, int32_t *dummyarray) const |
![]() | |
SoVertexShape (void) | |
virtual | ~SoVertexShape () |
virtual SbBool | shouldGLRender (SoGLRenderAction *action) |
void | setNormalCache (SoState *const state, const int num, const SbVec3f *normals) |
SoNormalCache * | getNormalCache (void) const |
SoNormalCache * | generateAndReadLockNormalCache (SoState *const state) |
void | getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const SbBool neednormals) |
void | readLockNormalCache (void) |
void | readUnlockNormalCache (void) |
![]() | |
SoShape (void) | |
virtual | ~SoShape () |
float | getComplexityValue (SoAction *action) |
void | beginSolidShape (SoGLRenderAction *action) |
void | endSolidShape (SoGLRenderAction *action) |
void | GLRenderBoundingBox (SoGLRenderAction *action) |
SbBool | shouldPrimitiveCount (SoGetPrimitiveCountAction *action) |
SbBool | shouldRayPick (SoRayPickAction *const action) |
void | computeObjectSpaceRay (SoRayPickAction *const action) |
void | computeObjectSpaceRay (SoRayPickAction *const action, const SbMatrix &matrix) |
virtual SoDetail * | createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp) |
virtual SoDetail * | createLineSegmentDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp) |
virtual SoDetail * | createPointDetail (SoRayPickAction *action, const SoPrimitiveVertex *v, SoPickedPoint *pp) |
void | invokeTriangleCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2, const SoPrimitiveVertex *const v3) |
void | invokeLineSegmentCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2) |
void | invokePointCallbacks (SoAction *const action, const SoPrimitiveVertex *const v) |
void | beginShape (SoAction *const action, const TriangleShape shapetype, SoDetail *const detail=NULL) |
void | shapeVertex (const SoPrimitiveVertex *const v) |
void | endShape (void) |
void | generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoTextureCoordinateElement *const tce, const float s, const float t, const SbVec3f &normal) |
void | generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoTextureCoordinateElement *const tce, const float s, const float t, const float r, const SbVec3f &normal) |
SbBool | startVertexArray (SoGLRenderAction *action, const SoCoordinateElement *coords, const SbVec3f *pervertexnormals, const SbBool texpervertex, const SbBool colorpervertex) |
void | finishVertexArray (SoGLRenderAction *action, const SbBool vbo, const SbBool normpervertex, const SbBool texpervertex, const SbBool colorpervertex) |
![]() | |
SoNode (void) | |
virtual | ~SoNode () |
virtual SbBool | readInstance (SoInput *in, unsigned short flags) |
![]() | |
SoFieldContainer (void) | |
~SoFieldContainer () | |
![]() | |
SoBase (void) | |
virtual | ~SoBase () |
virtual void | destroy (void) |
SbBool | hasMultipleWriteRefs (void) const |
SbBool | writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const |
void | writeFooter (SoOutput *out) const |
virtual const char * | getFileFormatName (void) const |
Static Protected Member Functions | |
static const SoFieldData ** | getFieldDataPtr (void) |
The SoLineSet class is used to render and organize non-indexed polylines.
Polylines are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 2], this node would specify a line through coordinates 0, 1 and 2, a line through coordinates 3, 4, 5 and 6, and finally a single line segment between coordinates 7 and 8.
Here's a very simple usage example:
#Inventor V2.1 ascii Separator { Coordinate3 { point [ 0 0 0, 1 1 1, 2 1 1, 2 2 1, 2 2 2, 2 2 3, 2 3 2, 2 3 3, 3 3 3 ] } LineSet { numVertices [ 3, 4, 2 ] } }
Binding PER_VERTEX, PER_FACE, PER_PART or OVERALL can be set for material, and normals. The default material binding is OVERALL. The default normal binding is PER_VERTEX. If no normals are set, the line set will be rendered with lighting disabled.
The width of the rendered lines can be controlled through the insertion of an SoDrawStyle node in front of SoLineSet node(s) in the scenegraph.
FILE FORMAT/DEFAULTS:
SoLineSet::SoLineSet | ( | void | ) |
Constructor.
References numVertices.
|
protectedvirtual |
Destructor.
|
static |
This static method returns the SoType object associated with objects of this class.
Reimplemented from SoNonIndexedShape.
|
virtual |
Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and "downward" casting.
Usage example:
For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.
For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.
Reimplemented from SoNonIndexedShape.
|
staticprotected |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Reimplemented from SoNonIndexedShape.
|
protectedvirtual |
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL
.
Reimplemented from SoNonIndexedShape.
|
static |
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
Reimplemented from SoNonIndexedShape.
|
virtual |
Action method for the SoGLRenderAction.
This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method.
Reimplemented from SoShape.
References SoNonIndexedShape::fixNumVerticesPointers(), SoFieldContainer::get(), SoMField::getNum(), SoAction::getState(), SoMFInt32::getValues(), SoVertexShape::getVertexData(), SoNode::GLRender(), numVertices, SoState::pop(), SoState::push(), SoVertexShape::shouldGLRender(), SoNonIndexedShape::startIndex, and SoVertexShape::vertexProperty.
|
virtual |
Action method for the SoGetBoundingBoxAction.
Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.
Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.
Reimplemented from SoShape.
References SoShape::getBoundingBox(), and SoAction::getState().
|
virtual |
Action method for the SoGetPrimitiveCountAction.
Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.
Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.
Reimplemented from SoShape.
References SoGetPrimitiveCountAction::addNumLines(), SoGetPrimitiveCountAction::canApproximateCount(), SoNonIndexedShape::fixNumVerticesPointers(), SoMField::getNum(), SoAction::getState(), SoMFInt32::getValues(), numVertices, and SoShape::shouldPrimitiveCount().
|
protectedvirtual |
The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)
The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.
Implements SoShape.
References SoShape::beginShape(), SoNode::doAction(), SoShape::endShape(), SoNonIndexedShape::fixNumVerticesPointers(), SoMField::getNum(), SoAction::getState(), SoMFInt32::getValues(), SoVertexShape::getVertexData(), SoLineDetail::incLineIndex(), SoLineDetail::incPartIndex(), numVertices, SoState::pop(), SoState::push(), SoPointDetail::setCoordinateIndex(), SoPrimitiveVertex::setDetail(), SoPointDetail::setMaterialIndex(), SoPrimitiveVertex::setMaterialIndex(), SoPrimitiveVertex::setNormal(), SoPointDetail::setNormalIndex(), SoLineDetail::setPartIndex(), SoPrimitiveVertex::setPoint(), SoPointDetail::setTextureCoordIndex(), SoPrimitiveVertex::setTextureCoords(), SoShape::shapeVertex(), SoNonIndexedShape::startIndex, and SoVertexShape::vertexProperty.
Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.
The bounding box and center point should be calculated and returned in the local coordinate system.
The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses should not override SoNode::getBoundingBox().)
The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.
Implements SoShape.
References SoNonIndexedShape::computeCoordBBox(), SoMField::getNum(), and numVertices.
SoMFInt32 SoLineSet::numVertices |
Used to specify polylines. Each entry specifies the number of coordinates in a line. The coordinates are taken in order from the state or from the vertexProperty node.
Referenced by computeBBox(), generatePrimitives(), getPrimitiveCount(), GLRender(), and SoLineSet().
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
Generated on Thu Jul 19 2012 for Coin by Doxygen. 1.8.1.1