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// File: NIS_SurfaceDrawer.cpp
// Created: 20.03.08 09:09
// Author: Alexander GRIGORIEV
// Copyright: Open Cascade S.A. 2008
#include <NIS_SurfaceDrawer.hxx>
#include <NIS_Surface.hxx>
#include <NIS_InteractiveObject.hxx>
#include <Standard_ProgramError.hxx>
#ifdef WNT
#include <windows.h>
#endif
#include <GL/gl.h>
static void setColor(GLenum theFace,
Quantity_Parameter * theAmbient,
const Standard_Real theSpecularity,
GLint theShininess);
IMPLEMENT_STANDARD_HANDLE (NIS_SurfaceDrawer, NIS_Drawer)
IMPLEMENT_STANDARD_RTTIEXT (NIS_SurfaceDrawer, NIS_Drawer)
//=======================================================================
//function : NIS_SurfaceDrawer()
//purpose : Constructor
//=======================================================================
NIS_SurfaceDrawer::NIS_SurfaceDrawer
(const Quantity_Color &theNormal,
const Quantity_Color &theHilight,
const Quantity_Color &theDynHilight)
: myBackColor (theNormal),
myPolygonOffset (0.f),
myIsWireframe (Standard_False)
{
myColor[Draw_Normal] = theNormal;
myColor[Draw_Top] = theNormal;
myColor[Draw_Transparent] = theNormal;
myColor[Draw_Hilighted] = theHilight;
myColor[Draw_DynHilighted] = theDynHilight;
}
//=======================================================================
//function : SetColor
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::SetColor(const Quantity_Color &theColor)
{
myColor[Draw_Normal] = theColor;
myColor[Draw_Top] = theColor;
myColor[Draw_Transparent] = theColor;
}
//=======================================================================
//function : Assign
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::Assign (const Handle_NIS_Drawer& theOther)
{
if (theOther.IsNull() == Standard_False) {
NIS_Drawer::Assign (theOther);
const Handle(NIS_SurfaceDrawer)& anOther =
static_cast <const Handle(NIS_SurfaceDrawer)&> (theOther);
myColor[Draw_Normal] = anOther->myColor[Draw_Normal];
myColor[Draw_Top] = anOther->myColor[Draw_Top];
myColor[Draw_Transparent] = anOther->myColor[Draw_Transparent];
myColor[Draw_Hilighted] = anOther->myColor[Draw_Hilighted];
myColor[Draw_DynHilighted] = anOther->myColor[Draw_DynHilighted];
myBackColor = anOther->myBackColor;
myPolygonOffset = anOther->myPolygonOffset;
myIsWireframe = anOther->myIsWireframe;
}
}
//=======================================================================
//function : IsEqual
//purpose : Comparison of two Drawers (for Map impementation)
//=======================================================================
Standard_Boolean NIS_SurfaceDrawer::IsEqual
(const Handle_NIS_Drawer& theOther)const
{
static const Standard_Real anEpsilon2 (1e-7);
Standard_Boolean aResult (Standard_False);
const Handle(NIS_SurfaceDrawer) anOther =
Handle(NIS_SurfaceDrawer)::DownCast (theOther);
if (NIS_Drawer::IsEqual(theOther))
aResult = (anOther->myColor[Draw_Normal]
.SquareDistance (myColor[Draw_Normal]) < anEpsilon2 &&
anOther->myColor[Draw_Hilighted]
.SquareDistance (myColor[Draw_Hilighted]) < anEpsilon2 &&
anOther->myColor[Draw_DynHilighted]
.SquareDistance (myColor[Draw_DynHilighted]) < anEpsilon2 &&
anOther->myBackColor.SquareDistance(myBackColor) < anEpsilon2 &&
fabs(anOther->myPolygonOffset - myPolygonOffset) < 0.999 &&
myIsWireframe == anOther->myIsWireframe);
if (aResult) {
// Arbitrary point for test
gp_XYZ aPnt[2] = {
gp_XYZ(113., -31.3, 29.19),
gp_XYZ(113., -31.3, 29.19)
};
anOther->myTrsf.Transforms(aPnt[0]);
myTrsf.Transforms(aPnt[1]);
if ((aPnt[0] - aPnt[1]).SquareModulus() > anEpsilon2)
aResult = Standard_False;
}
return aResult;
}
//=======================================================================
//function : redraw
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::redraw (const DrawType theType,
const Handle_NIS_View& theView)
{
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
GLdouble aMatrix[16] = {
myTrsf.Value(1,1), myTrsf.Value(2,1), myTrsf.Value(3,1), 0.,
myTrsf.Value(1,2), myTrsf.Value(2,2), myTrsf.Value(3,2), 0.,
myTrsf.Value(1,3), myTrsf.Value(2,3), myTrsf.Value(3,3), 0.,
myTrsf.Value(1,4), myTrsf.Value(2,4), myTrsf.Value(3,4), 1.
};
glMultMatrixd( aMatrix );
NIS_Drawer::redraw(theType, theView);
glPopMatrix();
}
//=======================================================================
//function : BeforeDraw
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::BeforeDraw (const DrawType theType,
const NIS_DrawList&)
{
glEnable(GL_LIGHTING);
// glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, 1);
glEnableClientState (GL_VERTEX_ARRAY);
if (myIsWireframe == Standard_False) {
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_POLYGON_OFFSET_FILL);
glShadeModel(GL_SMOOTH);
}
Quantity_Parameter aValueCol[4] = {0., 0., 0., 1.};
Quantity_TypeOfColor bidTC (Quantity_TOC_RGB);
GLfloat aLineWidth (1.f);
GLfloat anOffset = myPolygonOffset;
static const GLfloat gColorN[4] = {0.f, 0.f, 0.f, 1.f};
switch (theType) {
case Draw_DynHilighted:
aLineWidth = 3.f;
myColor[theType].Values (aValueCol[0], aValueCol[1], aValueCol[2], bidTC);
setColor(GL_FRONT_AND_BACK, &aValueCol[0], 0.1, 5);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, &gColorN[0]);
glLineWidth (aLineWidth);
if (myIsWireframe == Standard_False)
glPolygonOffset(1.f, -(anOffset + 11.f));
return;
case Draw_Hilighted:
anOffset += 10.f;
case Draw_Normal:
case Draw_Top:
case Draw_Transparent:
if (myIsWireframe == Standard_False) {
glPolygonOffset(1.f, -anOffset);
glEnableClientState (GL_NORMAL_ARRAY);
}
myColor[theType].Values (aValueCol[0], aValueCol[1], aValueCol[2], bidTC);
aValueCol[3] = 1. - myTransparency;
if (theType == Draw_Transparent) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// don't write triangles into depth test
glDepthMask(GL_FALSE);
}
break;
default:
return;
}
// glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 0);
if (theType == Draw_Hilighted ||
myBackColor.SquareDistance(myColor[Draw_Normal]) < 1.e-7)
{
setColor(GL_FRONT_AND_BACK, &aValueCol[0], 0.5, 10);
} else {
setColor(GL_FRONT, &aValueCol[0], 0.4, 10);
myBackColor.Values (aValueCol[0], aValueCol[1], aValueCol[2], bidTC);
setColor(GL_BACK, &aValueCol[0], 0.8, 5);
}
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, &gColorN[0]);
glLineWidth (aLineWidth);
}
//=======================================================================
//function : AfterDraw
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::AfterDraw (const DrawType theType,
const NIS_DrawList&)
{
glDisable(GL_LIGHTING);
glDisableClientState(GL_VERTEX_ARRAY);
switch (theType) {
case Draw_Transparent:
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
case Draw_Hilighted:
case Draw_Normal:
case Draw_Top:
if (myIsWireframe == Standard_False)
glDisableClientState(GL_NORMAL_ARRAY);
default:;
}
if (myIsWireframe == Standard_False)
glDisable(GL_POLYGON_OFFSET_FILL);
}
//=======================================================================
//function : Draw
//purpose :
//=======================================================================
void NIS_SurfaceDrawer::Draw (const Handle_NIS_InteractiveObject& theObj,
const DrawType theType,
const NIS_DrawList&)
{
// Assertion for the type of the drawn object
#ifdef _DEBUG
static const Handle(Standard_Type) ThisType = STANDARD_TYPE(NIS_Surface);
Standard_ProgramError_Raise_if (theObj->IsKind(ThisType) == Standard_False,
"NIS_Surface::Draw: irrelevant object type");
#endif
const NIS_Surface * pObject =
static_cast <const NIS_Surface *> (theObj.operator->());
glVertexPointer (3, GL_FLOAT, 0, pObject->Node(0));
// In Highlited mode the shape must be shown as wireframe
Standard_Boolean isWireframe(myIsWireframe);
if (isWireframe == Standard_False && theType == Draw_DynHilighted)
if (pObject->NEdges() > 0)
isWireframe = Standard_True;
if (isWireframe)
{
for (Standard_Integer i = 0; i < pObject->NEdges(); i++) {
const GLint * pEdge = static_cast<const GLint *> (pObject->Edge(i));
glDrawElements (GL_LINE_STRIP, pEdge[0], GL_UNSIGNED_INT, &pEdge[1]);
}
} else {
if (pObject->NTriangles()) {
if (theType != Draw_DynHilighted)
glNormalPointer (GL_FLOAT, 0, pObject->Normal(0));
glDrawElements (GL_TRIANGLES, pObject->NTriangles()*3,
GL_UNSIGNED_INT, pObject->Triangle(0));
}
}
}
//=======================================================================
//function : setColor
//purpose :
//=======================================================================
void setColor(GLenum theFace,
Quantity_Parameter * theAmbient,
const Standard_Real theSpecularity,
GLint theShininess)
{
GLfloat aSpec = static_cast<GLfloat>(theSpecularity);
GLfloat aValueCol[4] = {
GLfloat(theAmbient[0]),
GLfloat(theAmbient[1]),
GLfloat(theAmbient[2]),
GLfloat(theAmbient[3])
};
glMaterialfv(theFace, GL_AMBIENT_AND_DIFFUSE, &aValueCol[0]);
aValueCol[0] = aSpec * (aValueCol[0] - 1.f) + 1.f;
aValueCol[1] = aSpec * (aValueCol[1] - 1.f) + 1.f;
aValueCol[2] = aSpec * (aValueCol[2] - 1.f) + 1.f;
aValueCol[3] = 1.f;
glMaterialfv(theFace, GL_SPECULAR, &aValueCol[0]);
glMateriali(theFace, GL_SHININESS, theShininess);
}
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