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Only certain elements can be overridden. More...
#include <Inventor/elements/SoOverrideElement.h>
Public Types | |
enum | FlagBits { AMBIENT_COLOR = 0x00000001, COLOR_INDEX = 0x00000002, COMPLEXITY = 0x00000004, COMPLEXITY_TYPE = 0x00000008, CREASE_ANGLE = 0x00000010, DIFFUSE_COLOR = 0x00000020, DRAW_STYLE = 0x00000040, EMISSIVE_COLOR = 0x00000080, FONT_NAME = 0x00000100, FONT_SIZE = 0x00000200, LIGHT_MODEL = 0x00000400, LINE_PATTERN = 0x00000800, LINE_WIDTH = 0x00001000, MATERIAL_BINDING = 0x00002000, POINT_SIZE = 0x00004000, PICK_STYLE = 0x00008000, SHAPE_HINTS = 0x00010000, SHININESS = 0x00020000, SPECULAR_COLOR = 0x00040000, POLYGON_OFFSET = 0x00080000, TRANSPARENCY = 0x00100000, TRANSPARENCY_TYPE = 0x00200000, NORMAL_VECTOR = 0x00400000, NORMAL_BINDING = 0x00800000 } |
Public Member Functions | |
virtual void | init (SoState *state) |
FIXME: write doc. | |
virtual void | push (SoState *state) |
FIXME: write doc. | |
virtual SbBool | matches (const SoElement *element) const |
FIXME: write doc. | |
virtual SoElement * | copyMatchInfo (void) const |
FIXME: write doc. | |
virtual void | print (FILE *file) const |
FIXME: write doc. | |
Static Public Member Functions | |
static SoType | getClassTypeId (void) |
static int | getClassStackIndex (void) |
static void * | createInstance (void) |
static void | initClass (void) |
static uint32_t | getFlags (SoState *const state) |
static SbBool | getAmbientColorOverride (SoState *const state) |
static SbBool | getColorIndexOverride (SoState *const state) |
static SbBool | getComplexityOverride (SoState *const state) |
static SbBool | getComplexityTypeOverride (SoState *const state) |
static SbBool | getCreaseAngleOverride (SoState *const state) |
static SbBool | getDiffuseColorOverride (SoState *const state) |
static SbBool | getDrawStyleOverride (SoState *const state) |
static SbBool | getEmissiveColorOverride (SoState *const state) |
static SbBool | getFontNameOverride (SoState *const state) |
static SbBool | getFontSizeOverride (SoState *const state) |
static SbBool | getLightModelOverride (SoState *const state) |
static SbBool | getLinePatternOverride (SoState *const state) |
static SbBool | getLineWidthOverride (SoState *const state) |
static SbBool | getMaterialBindingOverride (SoState *const state) |
static SbBool | getPickStyleOverride (SoState *const state) |
static SbBool | getPointSizeOverride (SoState *const state) |
static SbBool | getPolygonOffsetOverride (SoState *const state) |
static SbBool | getShapeHintsOverride (SoState *const state) |
static SbBool | getShininessOverride (SoState *const state) |
static SbBool | getSpecularColorOverride (SoState *const state) |
static SbBool | getTransparencyOverride (SoState *const state) |
static SbBool | getTransparencyTypeOverride (SoState *const state) |
static SbBool | getNormalVectorOverride (SoState *const state) |
static SbBool | getNormalBindingOverride (SoState *const state) |
static void | setAmbientColorOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setColorIndexOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setComplexityOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setComplexityTypeOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setCreaseAngleOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setDiffuseColorOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setDrawStyleOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setEmissiveColorOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setFontNameOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setFontSizeOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setLightModelOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setLinePatternOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setLineWidthOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setMaterialBindingOverride (SoState *const state, SoNode *const node, const SbBool override) |
FIXME: write doc. | |
static void | setPickStyleOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setPointSizeOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setPolygonOffsetOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setShapeHintsOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setShininessOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setSpecularColorOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setTransparencyOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setTransparencyTypeOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setNormalVectorOverride (SoState *const state, SoNode *const node, const SbBool override) |
static void | setNormalBindingOverride (SoState *const state, SoNode *const node, const SbBool override) |
Protected Member Functions | |
virtual | ~SoOverrideElement () |
Only certain elements can be overridden.
The remaining class documentation describes a single, special case:
A common request for functionality is to override only the transparency of the full scene graph, or parts of the scene graph.
In the original SGI Inventor, this is nigh impossible, as the API was designed to only make it possible to override all or none of the fields of a node. So calling SoNode::setOverride() on an SoMaterial node will cause all material settings of that node to override all material settings further on in the scene graph, and there is no way to override only the transparency settings.
In Coin, we have added in a little hack to overcome this problem, since it is such a common request for functionality: to have separate transparency override settings, set the environment variable COIN_SEPARATE_DIFFUSE_TRANSPARENCY_OVERRIDE
to "1" to enable this hack.
(Do however note that this will not work when the SoPackedColor or SoVertexProperty node is used to specify diffuse color and transparency -- only with the SoMaterial node.)
Here is a complete, stand-alone example which demonstrates how to accomplish this:
#include <Inventor/Qt/SoQt.h> #include <Inventor/Qt/viewers/SoQtExaminerViewer.h> #include <Inventor/nodes/SoSeparator.h> #include <Inventor/nodes/SoMaterial.h> // ************************************************************************* const char * scene = "#Inventor V2.1 asci\n" "\n" "Separator {" " Cone { }" " Translation { translation 1 0 5 }" "" " DEF OVERRIDEMATERIAL Material { transparency 0.5 }" "" " DEF OBJMATERIAL Material {" " diffuseColor 0.5 0 0" " transparency 0" " }" " Sphere { }" "}" ; int main(int argc, char ** argv) { QWidget * window = SoQt::init(argv[0]); (void)coin_setenv("COIN_SEPARATE_DIFFUSE_TRANSPARENCY_OVERRIDE", "1", TRUE); SoInput * in = new SoInput; in->setBuffer((void *)scene, strlen(scene)); SoSeparator * root = SoDB::readAll(in); assert(root); delete in; root->ref(); SoMaterial * overridemat = (SoMaterial *) SoBase::getNamedBase("OVERRIDEMATERIAL", SoMaterial::getClassTypeId()); assert(overridemat); overridemat->diffuseColor.setIgnored(TRUE); overridemat->setOverride(TRUE); SoQtExaminerViewer * viewer = new SoQtExaminerViewer(window); viewer->setSceneGraph(root); viewer->show(); SoQt::show(window); SoQt::mainLoop(); delete viewer; root->unref(); return 0; }
FIXME: write doc.
SoOverrideElement::~SoOverrideElement | ( | void | ) | [protected, virtual] |
The destructor.
SoType SoOverrideElement::getClassTypeId | ( | void | ) | [static] |
This static method returns the class type.
Reimplemented from SoElement.
int SoOverrideElement::getClassStackIndex | ( | void | ) | [static] |
This static method returns the state stack index for the class.
Reimplemented from SoElement.
void * SoOverrideElement::createInstance | ( | void | ) | [static] |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
void SoOverrideElement::initClass | ( | void | ) | [static] |
This static method initializes static data for the SoOverrideElement class.
Reimplemented from SoElement.
SbBool SoOverrideElement::getAmbientColorOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getColorIndexOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getComplexityOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getComplexityTypeOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getCreaseAngleOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getDiffuseColorOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getDrawStyleOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getEmissiveColorOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getFontNameOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getFontSizeOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getLightModelOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getLinePatternOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getLineWidthOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getMaterialBindingOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getPickStyleOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getPointSizeOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getPolygonOffsetOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getShapeHintsOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getShininessOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getSpecularColorOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getTransparencyOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getTransparencyTypeOverride | ( | SoState *const | state | ) | [static] |
FIXME: write doc.
SbBool SoOverrideElement::getNormalVectorOverride | ( | SoState *const | state | ) | [static] |
Returns normal vector override value.
SbBool SoOverrideElement::getNormalBindingOverride | ( | SoState *const | state | ) | [static] |
Returns normal binding override value.
void SoOverrideElement::setAmbientColorOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setColorIndexOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setComplexityOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setComplexityTypeOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setCreaseAngleOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setDiffuseColorOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
Can be used to set diffuse color override. This will also set the transparency override. Since we feel this is a design flaw, it is possible to override this behaviour by setting an environement value called COIN_SEPARATE_DIFFUSE_TRANSPARENCY_OVERRIDE to 1.
Please note that separate override will not work for the PackedColor or SoVertexProperty nodes.
void SoOverrideElement::setDrawStyleOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setEmissiveColorOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setFontNameOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setFontSizeOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setLightModelOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setLinePatternOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setLineWidthOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setPickStyleOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setPointSizeOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setPolygonOffsetOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setShapeHintsOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setShininessOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setSpecularColorOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
FIXME: write doc.
void SoOverrideElement::setNormalVectorOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
Can be used to set normal vector override.
void SoOverrideElement::setNormalBindingOverride | ( | SoState *const | state, | |
SoNode *const | node, | |||
const SbBool | override | |||
) | [static] |
Can be used to set normal binding override.
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