Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "tgl.h"
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#include "tconvert.h"
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#include "tofflinegl.h"
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#include "trop.h"
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#include "timage_io.h"
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#include "tcurves.h"
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#ifndef __sgi
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#ifdef _WIN32
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#include <cstdlib></cstdlib>
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#include <gl glut.h=""></gl>
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#elif defined(LINUX)
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#include <gl glut.h=""></gl>
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#else
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#include <glut glut.h=""></glut>
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#endif
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#endif
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#if defined(MACOSX) || defined(LINUX)
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#include <qglcontext></qglcontext>
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#endif
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//#include "tthread.h"
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#undef SCALE_BY_GLU
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//#undef NEW_DRAW_TEXT
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//-----------------------------------------------------------------------------
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Shinya Kitaoka 120a6e
namespace {
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// GLUquadric*  localDisk=0;
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/*
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  Find the number of slices in function of radius size.
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  \par radius of circle
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  \par size of pixel
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  \ret number of division to obtain a circle
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  */
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int computeSlices(double radius, double pixelSize = 1.0) {
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  if (radius < 0) return 2;
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  double thetaStep;
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  double temp = pixelSize * 0.5 / radius;
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  if (fabs(1.0 - temp) <= 1)
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    thetaStep = acos(1.0 - temp);
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  else
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    thetaStep = M_PI_4;
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  assert(thetaStep != 0.0);
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  int numberOfSlices = (int)(M_2PI / thetaStep);
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  return numberOfSlices != 0 ? numberOfSlices : 2;
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}
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}  // end of unnamed namespace
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//-----------------------------------------------------------------------------
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double tglGetPixelSize2() {
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  double mat[16];
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  glMatrixMode(GL_MODELVIEW);
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  glGetDoublev(GL_MODELVIEW_MATRIX, mat);
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  double det                      = fabs(mat[0] * mat[5] - mat[1] * mat[4]);
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  if (det < TConsts::epsilon) det = TConsts::epsilon;
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  return 1.0 / det;
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}
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//-----------------------------------------------------------------------------
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double tglGetTextWidth(const std::string &s, void *font) {
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  double factor = 0.07;
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  double w      = 0;
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  for (int i = 0; i < (int)s.length(); i++) w += glutStrokeWidth(font, s[i]);
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  return w * factor;
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}
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//-----------------------------------------------------------------------------
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void tglDrawText(const TPointD &p, const std::string &s, void *character) {
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#ifndef __sgi
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  glPushMatrix();
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  glTranslated(p.x, p.y, 0);
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  double factor = 0.07;
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  glScaled(factor, factor, factor);
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  for (int i = 0; i < (int)s.size(); i++) glutStrokeCharacter(character, s[i]);
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  glPopMatrix();
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#else
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  assert("Not Yet Implemented" && 0);
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  std::cout << s << std::endl;
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#endif
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}
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//-----------------------------------------------------------------------------
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void tglDrawText(const TPointD &p, const std::wstring &s, void *character) {
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#ifndef __sgi
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  glPushMatrix();
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  glTranslated(p.x, p.y, 0);
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  double factor = 0.07;
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  glScaled(factor, factor, factor);
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  for (int i = 0; i < (int)s.size(); i++) glutStrokeCharacter(character, s[i]);
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  glPopMatrix();
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#else
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  assert("Not Yet Implemented" && 0);
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  std::cout << s << std::endl;
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#endif
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}
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//-----------------------------------------------------------------------------
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void tglDrawSegment(const TPointD &p1, const TPointD &p2) {
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  glBegin(GL_LINES);
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  tglVertex(p1);
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  tglVertex(p2);
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  glEnd();
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}
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//-----------------------------------------------------------------------------
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void tglDrawCircle(const TPointD ¢er, double radius) {
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  if (radius <= 0) return;
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  double pixelSize = 1;
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  int slices       = 60;
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  if (slices <= 0) slices = computeSlices(radius, pixelSize) >> 1;
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  double step  = M_PI / slices;
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  double step2 = 2.0 * step;
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  double cos_t, sin_t, cos_ts, sin_ts, t;
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  glPushMatrix();
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  glTranslated(center.x, center.y, 0.0);
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  glBegin(GL_LINES);
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  cos_t = radius /* *1.0*/;
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  sin_t = 0.0;
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  for (t = 0; t + step < M_PI_2; t += step2) {
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    cos_ts = radius * cos(t + step);
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    sin_ts = radius * sin(t + step);
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    glVertex2f(cos_t, sin_t);
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    glVertex2f(cos_ts, sin_ts);
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    glVertex2f(-cos_t, sin_t);
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    glVertex2f(-cos_ts, sin_ts);
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    glVertex2f(-cos_t, -sin_t);
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    glVertex2f(-cos_ts, -sin_ts);
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    glVertex2f(cos_t, -sin_t);
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    glVertex2f(cos_ts, -sin_ts);
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    cos_t = cos_ts;
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    sin_t = sin_ts;
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  }
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  cos_ts = 0.0;
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  sin_ts = radius /* *1.0*/;
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  glVertex2f(cos_t, sin_t);
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  glVertex2f(cos_ts, sin_ts);
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  glVertex2f(-cos_t, sin_t);
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  glVertex2f(-cos_ts, sin_ts);
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  glVertex2f(-cos_t, -sin_t);
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  glVertex2f(-cos_ts, -sin_ts);
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  glVertex2f(cos_t, -sin_t);
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  glVertex2f(cos_ts, -sin_ts);
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  glEnd();
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  glPopMatrix();
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}
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//-----------------------------------------------------------------------------
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void tglDrawDisk(const TPointD &c, double r) {
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  if (r <= 0) return;
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  double pixelSize = 1;
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  int slices       = 60;
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  if (slices <= 0) slices = computeSlices(r, pixelSize) >> 1;
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  glPushMatrix();
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  glTranslated(c.x, c.y, 0.0);
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  GLUquadric *quadric = gluNewQuadric();
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  gluDisk(quadric, 0, r, slices, 1);
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  gluDeleteQuadric(quadric);
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  glPopMatrix();
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}
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//-----------------------------------------------------------------------------
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void tglDrawRect(const TRectD &rect) {
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  glBegin(GL_LINE_LOOP);
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  tglVertex(rect.getP00());
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  tglVertex(rect.getP10());
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  tglVertex(rect.getP11());
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  tglVertex(rect.getP01());
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  glEnd();
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}
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//-----------------------------------------------------------------------------
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void tglFillRect(const TRectD &rect) {
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  glBegin(GL_POLYGON);
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  tglVertex(rect.getP00());
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  tglVertex(rect.getP10());
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  tglVertex(rect.getP11());
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  tglVertex(rect.getP01());
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  glEnd();
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}
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//-----------------------------------------------------------------------------
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void tglRgbOnlyColorMask() {
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  tglMultColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
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  tglEnableBlending(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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//-----------------------------------------------------------------------------
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void tglAlphaOnlyColorMask() {
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  tglMultColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
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  tglEnableBlending(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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}
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//-----------------------------------------------------------------------------
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void tglEnableBlending(GLenum src, GLenum dst) {
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  glEnable(GL_BLEND);
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  glBlendFunc(src, dst);
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}
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//-----------------------------------------------------------------------------
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void tglEnableLineSmooth(bool enable, double lineSize) {
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  if (enable) {
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    glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
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    glEnable(GL_LINE_SMOOTH);
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    glLineWidth(lineSize);
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  } else
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    glDisable(GL_LINE_SMOOTH);
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}
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//-----------------------------------------------------------------------------
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void tglEnablePointSmooth(double pointSize) {
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  glEnable(GL_BLEND);
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  glPointSize(pointSize);
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}
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//-----------------------------------------------------------------------------
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void tglGetColorMask(GLboolean &red, GLboolean &green, GLboolean &blue,
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                     GLboolean &alpha) {
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  GLboolean channels[4];
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  glGetBooleanv(GL_COLOR_WRITEMASK, &channels[0]);
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  red = channels[0], green = channels[1], blue = channels[2],
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  alpha = channels[3];
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}
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//-----------------------------------------------------------------------------
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void tglMultColorMask(GLboolean red, GLboolean green, GLboolean blue,
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                      GLboolean alpha) {
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  GLboolean channels[4];
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  glGetBooleanv(GL_COLOR_WRITEMASK, &channels[0]);
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  glColorMask(red && channels[0], green && channels[1], blue && channels[2],
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              alpha && channels[3]);
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}
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//============================================================================
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namespace {
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//============================================================================
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class GlFontManager {
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  GlFontManager();
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public:
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  ~GlFontManager();
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  static GlFontManager *instance();
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  bool setFont(void *font = GLUT_BITMAP_TIMES_ROMAN_10);
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  void drawText(/*const TRectD bBox,*/
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                std::wstring wtext /*,
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                TDimensionD scale = TDimensionD(1.0, 1.0)*/);
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private:
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  static GlFontManager *m_instance;
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  //       font    font_height
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  //         |       |
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  std::map<void *,="" double=""> m_fonts;</void>
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  std::vector<trectd> m_charsBBox;</trectd>
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  void *m_currentFont;
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  TRaster32P m_fontTexture;
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  GLuint m_base;
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};
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//----------------------------------------------------------------------------
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GlFontManager *GlFontManager::m_instance = 0L;
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//----------------------------------------------------------------------------
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GlFontManager::GlFontManager() : m_currentFont(0L), m_base(0) {
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_8_BY_13, 13.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_9_BY_15, 15.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_TIMES_ROMAN_10, 10.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_TIMES_ROMAN_24, 24.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_HELVETICA_10, 10.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_HELVETICA_12, 12.0));
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  m_fonts.insert(std::make_pair(GLUT_BITMAP_HELVETICA_18, 18.0));
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  bool ok = setFont();
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  assert(ok);
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}
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//----------------------------------------------------------------------------
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GlFontManager::~GlFontManager() { m_instance = 0L; }
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//----------------------------------------------------------------------------
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GlFontManager *GlFontManager::instance() {
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  if (!m_instance) m_instance = new GlFontManager();
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  return m_instance;
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}
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//----------------------------------------------------------------------------
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bool GlFontManager::setFont(void *font) {
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  // cerca il font scelto nella mappa dei fonts conosciuti
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  std::map<void *,="" double="">::iterator it = m_fonts.find(font);</void>
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  // se e' stato trovato
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  if (it != m_fonts.end()) {
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    m_currentFont = font;
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    glPushAttrib(GL_ALL_ATTRIB_BITS);
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    glPushMatrix();
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    m_base = glGenLists(256);
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    glListBase(m_base);
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    int i = 0;
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    for (; i < 256; ++i) {
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      glNewList(m_base + i, GL_COMPILE);
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      glutStrokeCharacter(GLUT_STROKE_ROMAN, i);
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      // glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, i);
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      glEndList();
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    }
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    glPopAttrib();
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    glPopMatrix();
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    return true;
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  }
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  return false;
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}
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//----------------------------------------------------------------------------
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void GlFontManager::drawText(/*const TRectD bBox,*/
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                             std::wstring wtext /*,
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                             TDimensionD scale*/) {
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  if (!m_currentFont) return;
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  std::string text       = ::to_string(wtext);
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  const char *textString = text.c_str();
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  glListBase(m_base);
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  /*
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glPushMatrix();
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glTranslated(bBox.x0, bBox.y0, 0.0);
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glScaled(scale.lx*0.07, scale.ly*0.07, 1.0);
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*/
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  glCallLists((GLuint)strlen(textString), GL_BYTE, textString);
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  /*glPopMatrix();*/
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}
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//============================================================================
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}  // anonymous namespace
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//============================================================================
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void tglDraw(const TCubic &cubic, int precision, GLenum pointOrLine) {
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  CHECK_ERRORS_BY_GL;
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  assert(pointOrLine == GL_POINT || pointOrLine == GL_LINE);
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  float ctrlPts[4][3];
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  ctrlPts[0][0] = cubic.getP0().x;
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  ctrlPts[0][1] = cubic.getP0().y;
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  ctrlPts[0][2] = 0.0;
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  ctrlPts[1][0] = cubic.getP1().x;
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  ctrlPts[1][1] = cubic.getP1().y;
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  ctrlPts[1][2] = 0.0;
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  ctrlPts[2][0] = cubic.getP2().x;
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  ctrlPts[2][1] = cubic.getP2().y;
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  ctrlPts[2][2] = 0.0;
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  ctrlPts[3][0] = cubic.getP3().x;
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  ctrlPts[3][1] = cubic.getP3().y;
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  ctrlPts[3][2] = 0.0;
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  CHECK_ERRORS_BY_GL;
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  glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, 4, &ctrlPts[0][0]);
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  CHECK_ERRORS_BY_GL;
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  glEnable(GL_MAP1_VERTEX_3);
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  CHECK_ERRORS_BY_GL;
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  glMapGrid1f(precision, 0.0, 1.0);
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  CHECK_ERRORS_BY_GL;
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  glEvalMesh1(pointOrLine, 0, precision);
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  CHECK_ERRORS_BY_GL;
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}
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//-----------------------------------------------------------------------------
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void tglDraw(const TRectD &rect, const std::vector<traster32p> &textures,</traster32p>
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             bool blending) {
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  double pixelSize2 = tglGetPixelSize2();
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  // level e' la minore potenza di 2 maggiore di sqrt(pixelSize2)
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  unsigned int level = 1;
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  while (pixelSize2 * level * level <= 1.0) level <<= 1;
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  unsigned int texturesCount       = (int)textures.size();
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  if (level > texturesCount) level = texturesCount;
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  level = texturesCount - level;
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  tglDraw(rect, textures[level], blending);
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}
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//-------------------------------------------------------------------
Toshihiro Shimizu 890ddd
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void tglDraw(const TRectD &rect, const TRaster32P &tex, bool blending) {
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  CHECK_ERRORS_BY_GL;
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  glPushAttrib(GL_ALL_ATTRIB_BITS);
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  if (blending) {
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    glEnable(GL_BLEND);
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    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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  }
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  unsigned int texWidth  = 1;
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  unsigned int texHeight = 1;
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  while (texWidth < (unsigned int)tex->getLx()) texWidth = texWidth << 1;
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  while (texHeight < (unsigned int)tex->getLy()) texHeight = texHeight << 1;
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  double lwTex = 1.0;
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  double lhTex = 1.0;
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  TRaster32P texture;
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  unsigned int texLx = (unsigned int)tex->getLx();
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  unsigned int texLy = (unsigned int)tex->getLy();
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  if (texWidth != texLx || texHeight != texLy) {
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    texture = TRaster32P(texWidth, texHeight);
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    texture->fill(TPixel32(0, 0, 0, 0));
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    texture->copy(tex);
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    lwTex                  = (texLx) / (double)(texWidth);
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    lhTex                  = (texLy) / (double)(texHeight);
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    if (lwTex > 1.0) lwTex = 1.0;
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    if (lhTex > 1.0) lhTex = 1.0;
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  } else
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    texture = tex;
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  GLenum fmt =
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#if defined(TNZ_MACHINE_CHANNEL_ORDER_BGRM)
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      GL_BGRA_EXT;
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#elif defined(TNZ_MACHINE_CHANNEL_ORDER_MBGR)
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      GL_ABGR_EXT;
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#elif defined(TNZ_MACHINE_CHANNEL_ORDER_RGBM)
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      GL_RGBA;
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#elif defined(TNZ_MACHINE_CHANNEL_ORDER_MRGB)
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      GL_BGRA;
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#else
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//   Error  PLATFORM NOT SUPPORTED
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#error "unknown channel order!"
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#endif
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  // Generate a texture id and bind it.
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  GLuint texId;
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  glGenTextures(1, &texId);
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  glBindTexture(GL_TEXTURE_2D, texId);
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  glPixelStorei(GL_UNPACK_ROW_LENGTH, texture->getWrap());
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  texture->lock();
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  glTexImage2D(GL_TEXTURE_2D, 0, 4, texWidth, texHeight, 0, fmt,
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#ifdef TNZ_MACHINE_CHANNEL_ORDER_MRGB
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               GL_UNSIGNED_INT_8_8_8_8_REV,
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#else
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               GL_UNSIGNED_BYTE,
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#endif
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               texture->getRawData());
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  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
Toshihiro Shimizu 890ddd
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  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
Toshihiro Shimizu 890ddd
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  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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  glEnable(GL_TEXTURE_2D);
Toshihiro Shimizu 890ddd
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  glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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  double rectLx = rect.getLx();
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  double rectLy = rect.getLy();
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  tglColor(TPixel32(0, 0, 0, 0));
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  glPushMatrix();
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  glTranslated(rect.x0, rect.y0, 0.0);
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  glBegin(GL_POLYGON);
Toshihiro Shimizu 890ddd
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  glTexCoord2d(0, 0);
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  tglVertex(TPointD(0.0, 0.0));
Toshihiro Shimizu 890ddd
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  glTexCoord2d(lwTex, 0);
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  tglVertex(TPointD(rectLx, 0.0));
Toshihiro Shimizu 890ddd
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  glTexCoord2d(lwTex, lhTex);
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  tglVertex(TPointD(rectLx, rectLy));
Toshihiro Shimizu 890ddd
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  glTexCoord2d(0, lhTex);
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  tglVertex(TPointD(0.0, rectLy));
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  glEnd();
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  glDisable(GL_TEXTURE_2D);
Toshihiro Shimizu 890ddd
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  glPopMatrix();
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  glPopAttrib();
Toshihiro Shimizu 890ddd
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  // Delete texture
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  glDeleteTextures(1, &texId);
Toshihiro Shimizu 890ddd
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  texture->unlock();
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//-----------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
void tglBuildMipmaps(std::vector<traster32p> &rasters,</traster32p>
Shinya Kitaoka 120a6e
                     const TFilePath &filepath) {
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  assert(rasters.size() > 0);
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  TRop::ResampleFilterType resampleFilter = TRop::ClosestPixel;
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  TRasterP ras;
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  TImageReader::load(filepath, ras);
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  int rasLx = ras->getLx();
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  int rasLy = ras->getLy();
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  int lx = 1;
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  while (lx < rasLx) lx <<= 1;
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  int ly = 1;
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  while (ly < rasLy) ly <<= 1;
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  TRaster32P ras2(lx, ly);
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  double sx = (double)lx / (double)ras->getLx();
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  double sy = (double)ly / (double)ras->getLy();
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#ifndef SCALE_BY_GLU
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  TRop::resample(ras2, ras, TScale(sx, sy), resampleFilter);
Toshihiro Shimizu 890ddd
#else
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  ras->lock();
Shinya Kitaoka 120a6e
  gluScaleImage(GL_RGBA, ras->getLx(), ras->getLy(), GL_UNSIGNED_BYTE,
Shinya Kitaoka 120a6e
                ras->getRawData(), lx, ly, GL_UNSIGNED_BYTE,
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                ras2->getRawData());
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  ras->unlock();
Toshihiro Shimizu 890ddd
#endif
Toshihiro Shimizu 890ddd
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  rasters[0] = ras2;
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  int ras2Lx = ras2->getLx();
Shinya Kitaoka 120a6e
  int ras2Ly = ras2->getLy();
Shinya Kitaoka 120a6e
  for (int i = 1; i < (int)rasters.size(); ++i) {
Shinya Kitaoka 120a6e
    lx >>= 1;
Shinya Kitaoka 120a6e
    ly >>= 1;
Shinya Kitaoka 120a6e
    if (lx < 1) lx = 1;
Shinya Kitaoka 120a6e
    if (ly < 1) ly = 1;
Shinya Kitaoka 120a6e
    rasters[i]     = TRaster32P(lx, ly);
Shinya Kitaoka 120a6e
    sx             = (double)lx / (double)ras2Lx;
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    sy             = (double)ly / (double)ras2Ly;
Shinya Kitaoka 120a6e
    rasters[i]     = TRaster32P(lx, ly);
Toshihiro Shimizu 890ddd
#ifndef SCALE_BY_GLU
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    TRop::resample(rasters[i], ras2, TScale(sx, sy), resampleFilter);
Toshihiro Shimizu 890ddd
#else
Shinya Kitaoka 120a6e
    ras2->lock();
Shinya Kitaoka 120a6e
    gluScaleImage(GL_RGBA, ras->getLx(), ras->getLy(), GL_UNSIGNED_BYTE,
Shinya Kitaoka 120a6e
                  ras2->getRawData(), lx, ly, GL_UNSIGNED_BYTE,
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                  rasters[i]->getRawData());
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    ras2->unlock();
Toshihiro Shimizu 890ddd
#endif
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  }
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//-----------------------------------------------------------------------------
Shinya Kitaoka 120a6e
// Forse si potrebbe togliere l'ifdef ed usare QT
Shinya Kitaoka 9f5a1b
#if defined(_WIN32)
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
TGlContext tglGetCurrentContext() {
Shinya Kitaoka 120a6e
  return std::make_pair(wglGetCurrentDC(), wglGetCurrentContext());
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
void tglMakeCurrent(TGlContext context) {
Shinya Kitaoka 120a6e
  wglMakeCurrent(context.first, context.second);
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
void tglDoneCurrent(TGlContext) { wglMakeCurrent(NULL, NULL); }
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Toshihiro Shimizu 890ddd
#elif defined(LINUX) || defined(__sgi) || defined(MACOSX)
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
TGlContext tglGetCurrentContext() {
Shinya Kitaoka 120a6e
  return reinterpret_cast<tglcontext>(</tglcontext>
Shinya Kitaoka 120a6e
      const_cast<qglcontext *="">(QGLContext::currentContext()));</qglcontext>
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  // (Daniele) I'm not sure why QGLContext::currentContext() returns
Shinya Kitaoka 120a6e
  // const. I think it shouldn't, and guess (hope) this is safe...
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
void tglMakeCurrent(TGlContext context) {
Shinya Kitaoka 120a6e
  if (context)
Shinya Kitaoka 120a6e
    reinterpret_cast<qglcontext *="">(context)->makeCurrent();</qglcontext>
Shinya Kitaoka 120a6e
  else
Shinya Kitaoka 120a6e
    tglDoneCurrent(tglGetCurrentContext());
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
void tglDoneCurrent(TGlContext context) {
Shinya Kitaoka 120a6e
  if (context) reinterpret_cast<qglcontext *="">(context)->doneCurrent();</qglcontext>
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Campbell Barton 42d601
#else
Campbell Barton 42d601
#error "unknown platform!"
Toshihiro Shimizu 890ddd
#endif
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//-----------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
//  End Of File
Toshihiro Shimizu 890ddd
//-----------------------------------------------------------------------------