// @(#)root/gl:$Name: $:$Id: TGLSceneObject.cxx,v 1.25 2004/12/09 12:12:26 brun Exp $
// Author: Timur Pocheptsov 03/08/2004
/*************************************************************************
* Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifdef GDK_WIN32
#include "Windows4Root.h"
#endif
#include <GL/gl.h>
#include <GL/glu.h>
#include "TAttMarker.h"
#include "TBuffer3D.h"
#include "TError.h"
#include "TGLSceneObject.h"
#include "TGLFrustum.h"
ClassImp(TGLSceneObject)
static GLUtriangulatorObj *GetTesselator()
{
static struct Init {
Init()
{
#ifdef GDK_WIN32
typedef void (CALLBACK *tessfuncptr_t)();
#else
typedef void (*tessfuncptr_t)();
#endif
fTess = gluNewTess();
if (!fTess) {
Error("GetTesselator::Init", "could not create tesselation object");
} else {
gluTessCallback(fTess, (GLenum)GLU_BEGIN, (tessfuncptr_t)glBegin);
gluTessCallback(fTess, (GLenum)GLU_END, (tessfuncptr_t)glEnd);
gluTessCallback(fTess, (GLenum)GLU_VERTEX, (tessfuncptr_t)glVertex3dv);
}
}
~Init()
{
if(fTess)
gluDeleteTess(fTess);
}
GLUtriangulatorObj *fTess;
}singleton;
return singleton.fTess;
}
static GLUquadric *GetQuadric()
{
static struct Init {
Init()
{
fQuad = gluNewQuadric();
if (!fQuad) {
Error("GetQuadric::Init", "could not create quadric object");
} else {
gluQuadricOrientation(fQuad, (GLenum)GLU_OUTSIDE);
gluQuadricNormals(fQuad, (GLenum)GLU_SMOOTH);
}
}
~Init()
{
if(fQuad)
gluDeleteQuadric(fQuad);
}
GLUquadric *fQuad;
}singleton;
return singleton.fQuad;
}
//______________________________________________________________________________
TGLSelection::TGLSelection()
{
fBBox[0] = fBBox[1] = fBBox[2] =
fBBox[3] = fBBox[4] = fBBox[5] = 0.;
}
//______________________________________________________________________________
TGLSelection::TGLSelection(const Double_t *bbox)
{
for (Int_t i= 0; i < 6; ++i) fBBox[i] = bbox[i];
}
//______________________________________________________________________________
TGLSelection::TGLSelection(Double_t xmin, Double_t xmax, Double_t ymin,
Double_t ymax, Double_t zmin, Double_t zmax)
{
fBBox[0] = xmin, fBBox[1] = xmax;
fBBox[2] = ymin, fBBox[3] = ymax;
fBBox[4] = zmin, fBBox[5] = zmax;
}
//______________________________________________________________________________
void TGLSelection::DrawBox()const
{
Double_t xmin = fBBox[0], xmax = fBBox[1];
Double_t ymin = fBBox[2], ymax = fBBox[3];
Double_t zmin = fBBox[4], zmax = fBBox[5];
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glColor3d(1., 1., 1.);
glBegin(GL_LINE_LOOP);
glVertex3d(xmin, ymin, zmin);
glVertex3d(xmin, ymax, zmin);
glVertex3d(xmax, ymax, zmin);
glVertex3d(xmax, ymin, zmin);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3d(xmin, ymin, zmax);
glVertex3d(xmin, ymax, zmax);
glVertex3d(xmax, ymax, zmax);
glVertex3d(xmax, ymin, zmax);
glEnd();
glBegin(GL_LINES);
glVertex3d(xmin, ymin, zmin);
glVertex3d(xmin, ymin, zmax);
glVertex3d(xmin, ymax, zmin);
glVertex3d(xmin, ymax, zmax);
glVertex3d(xmax, ymax, zmin);
glVertex3d(xmax, ymax, zmax);
glVertex3d(xmax, ymin, zmin);
glVertex3d(xmax, ymin, zmax);
glEnd();
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
}
//______________________________________________________________________________
void TGLSelection::SetBBox(const Double_t *newBBox)
{
for (Int_t i= 0; i < 6; ++i) fBBox[i] = newBBox[i];
}
//______________________________________________________________________________
void TGLSelection::SetBBox(Double_t xmin, Double_t xmax, Double_t ymin,
Double_t ymax, Double_t zmin, Double_t zmax)
{
fBBox[0] = xmin, fBBox[1] = xmax;
fBBox[2] = ymin, fBBox[3] = ymax;
fBBox[4] = zmin, fBBox[5] = zmax;
}
//______________________________________________________________________________
void TGLSelection::Shift(Double_t x, Double_t y, Double_t z)
{
fBBox[0] += x, fBBox[1] += x;
fBBox[2] += y, fBBox[3] += y;
fBBox[4] += z, fBBox[5] += z;
}
//______________________________________________________________________________
void TGLSelection::Stretch(Double_t xs, Double_t ys, Double_t zs)
{
Double_t xC = fBBox[0] + (fBBox[1] - fBBox[0]) / 2;
Double_t yC = fBBox[2] + (fBBox[3] - fBBox[2]) / 2;
Double_t zC = fBBox[4] + (fBBox[5] - fBBox[4]) / 2;
Shift(-xC, -yC, -zC);
fBBox[0] *= xs, fBBox[1] *= xs;
fBBox[2] *= ys, fBBox[3] *= ys;
fBBox[4] *= zs, fBBox[5] *= zs;
Shift(xC, yC, zC);
}
//______________________________________________________________________________
TGLSceneObject::TGLSceneObject(const Double_t *start, const Double_t *end,
const Float_t *color, UInt_t glName, TObject *obj)
:fVertices(start, end), fColor(),
fGLName(glName), fNextT(0), fRealObject(obj)
{
fIsSelected = kFALSE;
SetColor(color, kTRUE);
SetBBox(start, end);
}
//______________________________________________________________________________
TGLSceneObject::TGLSceneObject(const Double_t *start, const Double_t *end, Int_t reserve,
const Float_t *color, UInt_t glName, TObject *obj)
:fVertices(reserve, 0.), fColor(),
fGLName(glName), fNextT(0), fRealObject(obj)
{
fIsSelected = kFALSE;
SetColor(color, kTRUE);
SetBBox(start, end);
}
//______________________________________________________________________________
Bool_t TGLSceneObject::IsTransparent()const
{
return fColor[3] < 1.f;
}
//______________________________________________________________________________
void TGLSceneObject::Shift(Double_t x, Double_t y, Double_t z)
{
fSelectionBox.Shift(x, y, z);
for (UInt_t i = 0, e = fVertices.size(); i < e; i += 3) {
fVertices[i] += x;
fVertices[i + 1] += y;
fVertices[i + 2] += z;
}
}
//______________________________________________________________________________
void TGLSceneObject::Stretch(Double_t xs, Double_t ys, Double_t zs)
{
fSelectionBox.Stretch(xs, ys, zs);
const Double_t *bbox = fSelectionBox.GetData();
Double_t xC = bbox[0] + (bbox[1] - bbox[0]) / 2;
Double_t yC = bbox[2] + (bbox[3] - bbox[2]) / 2;
Double_t zC = bbox[4] + (bbox[5] - bbox[4]) / 2;
Shift(-xC, -yC, -zC);
for (UInt_t i = 0, e = fVertices.size(); i < e; i += 3) {
fVertices[i] *= xs;
fVertices[i + 1] *= ys;
fVertices[i + 2] *= zs;
}
Shift(xC, yC, zC);
}
//______________________________________________________________________________
void TGLSceneObject::SetColor(const Float_t *color, Bool_t fromCtor)
{
if (!fromCtor) {
for (Int_t i = 0; i < 17; ++i) fColor[i] = color[i];
} else {
if (color) {
//diffuse and specular
fColor[0] = color[0];
fColor[1] = color[1];
fColor[2] = color[2];
} else {
for (Int_t i = 0; i < 12; ++i) fColor[i] = 1.f;
}
//ambient
fColor[4] = fColor[5] = fColor[6] = 0.f;
//specular
fColor[8] = fColor[9] = fColor[10] = 0.7f;
//emission
fColor[12] = fColor[13] = fColor[14] = 0.f;
//alpha
fColor[3] = fColor[7] = fColor[11] = fColor[15] = 1.f;
//shininess
fColor[16] = 60.f;
}
}
//______________________________________________________________________________
void TGLSceneObject::SetBBox(const Double_t *start, const Double_t *end)
{
Double_t xmin = start[0], xmax = xmin;
Double_t ymin = start[1], ymax = ymin;
Double_t zmin = start[2], zmax = zmin;
for (Int_t nv = 3, e = end - start; nv < e; nv += 3) {
xmin = TMath::Min(xmin, start[nv]);
xmax = TMath::Max(xmax, start[nv]);
ymin = TMath::Min(ymin, start[nv + 1]);
ymax = TMath::Max(ymax, start[nv + 1]);
zmin = TMath::Min(zmin, start[nv + 2]);
zmax = TMath::Max(zmax, start[nv + 2]);
}
fSelectionBox.SetBBox(xmin, xmax, ymin, ymax, zmin, zmax);
}
//______________________________________________________________________________
TGLFaceSet::TGLFaceSet(const TBuffer3D & buff, const Float_t *color, UInt_t glname, TObject *realobj)
:TGLSceneObject(buff.fPnts, buff.fPnts + 3 * buff.fNbPnts, color, glname, realobj),
fNormals(3 * buff.fNbPols)
{
fColor[3] = 1.f - buff.fTransparency / 100.f;
fNbPols = buff.fNbPols;
Int_t *segs = buff.fSegs;
Int_t *pols = buff.fPols;
Int_t shiftInd = buff.TestBit(TBuffer3D::kIsReflection) ? 1 : -1;
for (Int_t numPol = 0, j = 1; numPol < buff.fNbPols; ++numPol) {
Int_t segmentInd = shiftInd < 0 ? pols[j] + j : j + 1;
Int_t segmentCol = pols[j];
Int_t s1 = pols[segmentInd];
segmentInd += shiftInd;
Int_t s2 = pols[segmentInd];
segmentInd += shiftInd;
Int_t segEnds[] = {segs[s1 * 3 + 1], segs[s1 * 3 + 2],
segs[s2 * 3 + 1], segs[s2 * 3 + 2]};
Int_t numPnts[3] = {0};
if (segEnds[0] == segEnds[2]) {
numPnts[0] = segEnds[1], numPnts[1] = segEnds[0], numPnts[2] = segEnds[3];
} else if (segEnds[0] == segEnds[3]) {
numPnts[0] = segEnds[1], numPnts[1] = segEnds[0], numPnts[2] = segEnds[2];
} else if (segEnds[1] == segEnds[2]) {
numPnts[0] = segEnds[0], numPnts[1] = segEnds[1], numPnts[2] = segEnds[3];
} else {
numPnts[0] = segEnds[0], numPnts[1] = segEnds[1], numPnts[2] = segEnds[2];
}
fPolyDesc.push_back(3);
Int_t sizeInd = fPolyDesc.size() - 1;
fPolyDesc.insert(fPolyDesc.end(), numPnts, numPnts + 3);
Int_t lastAdded = numPnts[2];
Int_t end = shiftInd < 0 ? j + 1 : j + segmentCol + 1;
for (; segmentInd != end; segmentInd += shiftInd) {
segEnds[0] = segs[pols[segmentInd] * 3 + 1];
segEnds[1] = segs[pols[segmentInd] * 3 + 2];
if (segEnds[0] == lastAdded) {
fPolyDesc.push_back(segEnds[1]);
lastAdded = segEnds[1];
} else {
fPolyDesc.push_back(segEnds[0]);
lastAdded = segEnds[0];
}
++fPolyDesc[sizeInd];
}
j += segmentCol + 2;
}
CalculateNormals();
}
//______________________________________________________________________________
void TGLFaceSet::GLDraw(const TGLFrustum *fr)const
{
if (fr) {
if (!fr->ClipOnBoundingBox(*this)) return;
}
glMaterialfv(GL_FRONT, GL_DIFFUSE, fColor);
glMaterialfv(GL_FRONT, GL_AMBIENT, fColor + 4);
glMaterialfv(GL_FRONT, GL_SPECULAR, fColor + 8);
glMaterialfv(GL_FRONT, GL_EMISSION, fColor + 12);
glMaterialf(GL_FRONT, GL_SHININESS, fColor[16]);
if (IsTransparent()) {
glEnable(GL_BLEND);
glDepthMask(GL_FALSE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glLoadName(GetGLName());
GLDrawPolys();
if (IsTransparent()) {
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
}
if (fIsSelected) {
fSelectionBox.DrawBox();
}
}
//______________________________________________________________________________
void TGLFaceSet::GLDrawPolys()const
{
GLUtriangulatorObj *tessObj = GetTesselator();
const Double_t *pnts = &fVertices[0];
const Double_t *normals = &fNormals[0];
const Int_t *pols = &fPolyDesc[0];
for (UInt_t i = 0, j = 0; i < fNbPols; ++i) {
Int_t npoints = pols[j++];
if (tessObj && npoints > 4) {
gluBeginPolygon(tessObj);
gluNextContour(tessObj, (GLenum)GLU_UNKNOWN);
glNormal3dv(normals + i * 3);
for (Int_t k = 0; k < npoints; ++k, ++j) {
gluTessVertex(tessObj, (Double_t *)pnts + pols[j] * 3, (Double_t *)pnts + pols[j] * 3);
}
gluEndPolygon(tessObj);
} else {
glBegin(GL_POLYGON);
glNormal3dv(normals + i * 3);
for (Int_t k = 0; k < npoints; ++k, ++j) {
glVertex3dv(pnts + pols[j] * 3);
}
glEnd();
}
}
}
//______________________________________________________________________________
Int_t TGLFaceSet::CheckPoints(const Int_t *source, Int_t *dest) const
{
const Double_t * p1 = &fVertices[source[0] * 3];
const Double_t * p2 = &fVertices[source[1] * 3];
const Double_t * p3 = &fVertices[source[2] * 3];
Int_t retVal = 1;
if (Eq(p1, p2)) {
dest[0] = source[0];
if (!Eq(p1, p3) ) {
dest[1] = source[2];
retVal = 2;
}
} else if (Eq(p1, p3)) {
dest[0] = source[0];
dest[1] = source[1];
retVal = 2;
} else {
dest[0] = source[0];
dest[1] = source[1];
retVal = 2;
if (!Eq(p2, p3)) {
dest[2] = source[2];
retVal = 3;
}
}
return retVal;
}
//______________________________________________________________________________
Bool_t TGLFaceSet::Eq(const Double_t *p1, const Double_t *p2)
{
Double_t dx = TMath::Abs(p1[0] - p2[0]);
Double_t dy = TMath::Abs(p1[1] - p2[1]);
Double_t dz = TMath::Abs(p1[2] - p2[2]);
return dx < 1e-10 && dy < 1e-10 && dz < 1e-10;
}
//______________________________________________________________________________
void TGLFaceSet::CalculateNormals()
{
Double_t *pnts = &fVertices[0];
for (UInt_t i = 0, j = 0; i < fNbPols; ++i) {
Int_t polEnd = fPolyDesc[j] + j + 1;
Int_t norm[] = {fPolyDesc[j + 1], fPolyDesc[j + 2], fPolyDesc[j + 3]};
j += 4;
Int_t check = CheckPoints(norm, norm), ngood = check;
if (check == 3) {
TMath::Normal2Plane(pnts + norm[0] * 3, pnts + norm[1] * 3,
pnts + norm[2] * 3, &fNormals[i * 3]);
j = polEnd;
continue;
}
while (j < (UInt_t)polEnd) {
norm[ngood++] = fPolyDesc[j++];
if (ngood == 3) {
ngood = CheckPoints(norm, norm);
if (ngood == 3) {
TMath::Normal2Plane(pnts + norm[0] * 3, pnts + norm[1] * 3,
pnts + norm[2] * 3, &fNormals[i * 3]);
j = polEnd;
break;
}
}
}
}
}
//______________________________________________________________________________
void TGLFaceSet::Stretch(Double_t xs, Double_t ys, Double_t zs)
{
TGLSceneObject::Stretch(xs, ys, zs);
CalculateNormals();
}
//______________________________________________________________________________
TGLPolyMarker::TGLPolyMarker(const TBuffer3D &b, const Float_t *c, UInt_t n, TObject *r)
:TGLSceneObject(b.fPnts, b.fPnts + 3 * b.fNbPnts, c, n, r),
fStyle(7)
{
//TAttMarker is not TObject descendant, so I need dynamic_cast
if (TAttMarker *realObj = dynamic_cast<TAttMarker *>(b.fId))
fStyle = realObj->GetMarkerStyle();
}
//______________________________________________________________________________
void TGLPolyMarker::GLDraw(const TGLFrustum *fr)const
{
if (fr) {
if (!fr->ClipOnBoundingBox(*this)) return;
}
const Double_t *vertices = &fVertices[0];
UInt_t size = fVertices.size();
Int_t stacks = 6, slices = 6;
Float_t pointSize = 6.f;
Double_t topRadius = 5.;
GLUquadric *quadObj = GetQuadric();
glLoadName(GetGLName());
glMaterialfv(GL_FRONT, GL_DIFFUSE, fColor);
switch (fStyle) {
case 27:
stacks = 2, slices = 4;
case 4:case 8:case 20:case 24:
if (quadObj) {
for (UInt_t i = 0; i < size; i += 3) {
glPushMatrix();
glTranslated(vertices[i], vertices[i + 1], vertices[i + 2]);
gluSphere(quadObj, 5., slices, stacks);
glPopMatrix();
}
}
break;
case 22:case 26:
topRadius = 0.;
case 21:case 25:
if (quadObj) {
for (UInt_t i = 0; i < size; i += 3) {
glPushMatrix();
glTranslated(vertices[i], vertices[i + 1], vertices[i + 2]);
gluCylinder(quadObj, 5., topRadius, 5., 4, 1);
glPopMatrix();
}
}
break;
case 23:
if (quadObj) {
for (UInt_t i = 0; i < size; i += 3) {
glPushMatrix();
glTranslated(vertices[i], vertices[i + 1], vertices[i + 2]);
glRotated(180, 1., 0., 0.);
gluCylinder(quadObj, 5., 0., 5., 4, 1);
glPopMatrix();
}
}
break;
case 3: case 2: case 5:
DrawStars();
break;
case 1: case 9: case 10: case 11: default:{
glBegin(GL_POINTS);
for (UInt_t i = 0; i < size; i += 3)
glVertex3dv(vertices + i);
glEnd();
}
break;
case 6:
pointSize = 3.f;
case 7:
glPointSize(pointSize);
glBegin(GL_POINTS);
for (UInt_t i = 0; i < size; i += 3)
glVertex3dv(vertices + i);
glEnd();
glPointSize(1.f);
}
if (fIsSelected) {
fSelectionBox.DrawBox();
}
}
//______________________________________________________________________________
void TGLPolyMarker::DrawStars()const
{
glDisable(GL_LIGHTING);
glColor3fv(fColor);
for (UInt_t i = 0; i < fVertices.size(); i += 3) {
Double_t x = fVertices[i];
Double_t y = fVertices[i + 1];
Double_t z = fVertices[i + 2];
glBegin(GL_LINES);
if (fStyle == 2 || fStyle == 3) {
glVertex3d(x - 2., y, z);
glVertex3d(x + 2., y, z);
glVertex3d(x, y, z - 2.);
glVertex3d(x, y, z + 2.);
glVertex3d(x, y - 2., z);
glVertex3d(x, y + 2., z);
}
if(fStyle != 2) {
glVertex3d(x - 1.4, y - 1.4, z - 1.4);
glVertex3d(x + 1.4, y + 1.4, z + 1.4);
glVertex3d(x - 1.4, y - 1.4, z + 1.4);
glVertex3d(x + 1.4, y + 1.4, z - 1.4);
glVertex3d(x - 1.4, y + 1.4, z - 1.4);
glVertex3d(x + 1.4, y - 1.4, z + 1.4);
glVertex3d(x - 1.4, y + 1.4, z + 1.4);
glVertex3d(x + 1.4, y - 1.4, z - 1.4);
}
glEnd();
}
glEnable(GL_LIGHTING);
}
//______________________________________________________________________________
TGLPolyLine::TGLPolyLine(const TBuffer3D &b, const Float_t *c, UInt_t n, TObject *r)
:TGLSceneObject(b.fPnts, b.fPnts + 3 * b.fNbPnts, c, n, r)
{
}
//______________________________________________________________________________
void TGLPolyLine::GLDraw(const TGLFrustum *fr)const
{
if (fr) {
if (!fr->ClipOnBoundingBox(*this)) return;
}
glLoadName(GetGLName());
glMaterialfv(GL_FRONT, GL_DIFFUSE, fColor);
glBegin(GL_LINE_STRIP);
for (UInt_t i = 0; i < fVertices.size(); i += 3)
glVertex3d(fVertices[i], fVertices[i + 1], fVertices[i + 2]);
glEnd();
if (fIsSelected) {
fSelectionBox.DrawBox();
}
}
//______________________________________________________________________________
TGLSphere::TGLSphere(const TBuffer3D &b, const Float_t *c, UInt_t n, TObject *r)
:TGLSceneObject(b.fPnts, b.fPnts + 3 * b.fNbPnts, c, n, r)
{
// Default ctor
fX = b.fPnts[0];
fY = b.fPnts[1];
fZ = b.fPnts[2];
fNdiv = (Int_t)b.fPnts[9];
fRadius = b.fPnts[10];
}
//______________________________________________________________________________
void TGLSphere::GLDraw(const TGLFrustum *fr)const
{
if (fr) {
if (!fr->ClipOnBoundingBox(*this)) return;
}
// Draw a Sphere using OpenGL Sphere primitive gluSphere
glMaterialfv(GL_FRONT, GL_DIFFUSE, fColor);
glMaterialfv(GL_FRONT, GL_AMBIENT, fColor + 4);
glMaterialfv(GL_FRONT, GL_SPECULAR, fColor + 8);
glMaterialfv(GL_FRONT, GL_EMISSION, fColor + 12);
glMaterialf(GL_FRONT, GL_SHININESS, fColor[16]);
if (IsTransparent()) {
glEnable(GL_BLEND);
glDepthMask(GL_FALSE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
if (GLUquadric *quadObj = GetQuadric()) {
glLoadName(GetGLName());
glPushMatrix();
glTranslated(fX, fY, fZ);
gluSphere(quadObj, fRadius, fNdiv, fNdiv);
glPopMatrix();
}
if (IsTransparent()) {
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
}
if (fIsSelected) {
fSelectionBox.DrawBox();
}
}
//______________________________________________________________________________
void TGLSphere::Shift(Double_t x, Double_t y, Double_t z)
{
fX += x;
fY += y;
fZ += z;
fSelectionBox.Shift(x, y, z);
}
//______________________________________________________________________________
void TGLSphere::Stretch(Double_t, Double_t, Double_t)
{
}
//______________________________________________________________________________
TGLTube::TGLTube(const TBuffer3D &b, const Float_t *c, UInt_t n, TObject *r)
:TGLSceneObject(b.fPnts, b.fPnts + 3 * b.fNbPnts, 24, c, n, r)
{
fColor[3] = 1.f - b.fTransparency / 100.f;
//center
fVertices[0] = b.fPnts[0];
fVertices[1] = b.fPnts[1];
fVertices[2] = b.fPnts[2];
//rmin1
fVertices[3] = b.fPnts[28];
//rmax1
fVertices[4] = b.fPnts[29];
//rmin2
fVertices[5] = b.fPnts[30];
//rmax2
fVertices[6] = b.fPnts[31];
//Dz
fVertices[7] = b.fPnts[32];
fNdiv = (Int_t)b.fPnts[27];
fInv = b.TestBit(TBuffer3D::kIsReflection);
const Double_t *p = b.fPnts;
fVertices[8] = p[33], fVertices[9] = p[36], fVertices[10] = p[39], fVertices[11] = 0.;
fVertices[12] = p[34], fVertices[13] = p[37], fVertices[14] = p[40], fVertices[15] = 0.;
fVertices[16] = p[35], fVertices[17] = p[38], fVertices[18] = p[41], fVertices[19] = 0.;
fVertices[20] = 0., fVertices[21] = 0., fVertices[22] = 0., fVertices[23] = 1.;
}
//______________________________________________________________________________
void TGLTube::GLDraw(const TGLFrustum *fr)const
{
if (fr) {
if (!fr->ClipOnBoundingBox(*this)) return;
}
glMaterialfv(GL_FRONT, GL_DIFFUSE, fColor);
glMaterialfv(GL_FRONT, GL_AMBIENT, fColor + 4);
glMaterialfv(GL_FRONT, GL_SPECULAR, fColor + 8);
glMaterialfv(GL_FRONT, GL_EMISSION, fColor + 12);
glMaterialf(GL_FRONT, GL_SHININESS, fColor[16]);
if (IsTransparent()) {
glEnable(GL_BLEND);
glDepthMask(GL_FALSE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
if (GLUquadric *quadObj = GetQuadric()) {
glLoadName(GetGLName());
glPushMatrix();
Double_t xC = fVertices[0], yC = fVertices[1], zC = fVertices[2];
Double_t rMin1 = fVertices[3], rMax1 = fVertices[4];
Double_t rMin2 = fVertices[5], rMax2 = fVertices[6];
Double_t dz = fVertices[7];
glTranslated(xC, yC, zC);
glMultMatrixd(&fVertices[8]);
glPushMatrix();
glTranslated(0., 0., -dz);
//outer surface
if (fInv) {
glFrontFace(GL_CW);
}
gluCylinder(quadObj, rMax1, rMax2, 2 * dz, fNdiv, 1);
//inner surface
if (rMin1 && rMin2) {
gluQuadricOrientation(quadObj, (GLenum)GLU_INSIDE);
gluCylinder(quadObj, rMin1, rMin2, 2 * dz, fNdiv, 1);
//return orientation back
gluQuadricOrientation(quadObj, (GLenum)GLU_OUTSIDE);
}
glPopMatrix();
//capping
glPushMatrix();
glTranslated(0., 0., dz);
gluDisk(quadObj, rMin2, rMax2, fNdiv, 1);
glRotated(180., 1., 0., 0.);
glTranslated(0., 0., 2 * dz);
gluDisk(quadObj, rMin1, rMax1, fNdiv, 1);
glPopMatrix();
glPopMatrix();
if (fInv) {
glFrontFace(GL_CCW);
}
}
if (IsTransparent()) {
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
}
if (fIsSelected) {
fSelectionBox.DrawBox();
}
}
//______________________________________________________________________________
void TGLTube::Shift(Double_t x, Double_t y, Double_t z)
{
fSelectionBox.Shift(x, y, z);
fVertices[0] += x;
fVertices[1] += y;
fVertices[2] += z;
}
//______________________________________________________________________________
void TGLTube::Stretch(Double_t, Double_t, Double_t)
{
}
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