void drawTriangle( double x1, double y1, double z1,
double x2, double y2, double z2,
double x3, double y3, double z3 )
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile,
"polymesh { points=((%f,%f,%f),(%f,%f,%f),(%f,%f,%f)); faces=((0,1,2));\n", x1, y1, z1, x2, y2, z2, x3, y3, z3 );
_dump_current_material();
fprintf(mds->m_rayFile, "})\n" );
}
else
{
double a, b, c, d, e, f;
/* the normal to the triangle is the cross product of two of its edges. */
a = x2-x1;
b = y2-y1;
c = z2-z1;
d = x3-x1;
e = y3-y1;
f = z3-z1;
glBegin( GL_TRIANGLES );
glNormal3d( b*f - c*e, c*d - a*f, a*e - b*d );
glVertex3d( x1, y1, z1 );
glVertex3d( x2, y2, z2 );
glVertex3d( x3, y3, z3 );
glEnd();
}
}
void drawSphere(double r)
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile, "scale(%f,%f,%f,sphere {\n", r, r, r );
_dump_current_material();
fprintf(mds->m_rayFile, "}))\n" );
}
else
{
int divisions;
GLUquadricObj* gluq;
switch(mds->m_quality)
{
case HIGH:
divisions = 32; break;
case MEDIUM:
divisions = 20; break;
case LOW:
divisions = 12; break;
case POOR:
divisions = 8; break;
}
gluq = gluNewQuadric();
gluQuadricDrawStyle( gluq, GLU_FILL );
gluQuadricTexture( gluq, GL_TRUE );
gluSphere(gluq, r, divisions, divisions);
gluDeleteQuadric( gluq );
}
}
void drawCylinder( double h, double r1, double r2 )
{
ModelerDrawState *mds = ModelerDrawState::Instance();
int divisions;
_setupOpenGl();
switch(mds->m_quality)
{
case HIGH:
divisions = 32; break;
case MEDIUM:
divisions = 20; break;
case LOW:
divisions = 12; break;
case POOR:
divisions = 8; break;
}
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile,
"cone { height=%f; bottom_radius=%f; top_radius=%f;\n", h, r1, r2 );
_dump_current_material();
fprintf(mds->m_rayFile, "})\n" );
}
else
{
GLUquadricObj* gluq;
/* GLU will again do the work. draw the sides of the cylinder. */
gluq = gluNewQuadric();
gluQuadricDrawStyle( gluq, GLU_FILL );
gluQuadricTexture( gluq, GL_TRUE );
gluCylinder( gluq, r1, r2, h, divisions, divisions);
gluDeleteQuadric( gluq );
if ( r1 > 0.0 )
{
/* if the r1 end does not come to a point, draw a flat disk to
cover it up. */
gluq = gluNewQuadric();
gluQuadricDrawStyle( gluq, GLU_FILL );
gluQuadricTexture( gluq, GL_TRUE );
gluQuadricOrientation( gluq, GLU_INSIDE );
gluDisk( gluq, 0.0, r1, divisions, divisions);
gluDeleteQuadric( gluq );
}
if ( r2 > 0.0 )
{
/* if the r2 end does not come to a point, draw a flat disk to
cover it up. */
/* save the current matrix mode. */
int savemode;
glGetIntegerv( GL_MATRIX_MODE, &savemode );
/* translate the origin to the other end of the cylinder. */
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
glTranslated( 0.0, 0.0, h );
/* draw a disk centered at the new origin. */
gluq = gluNewQuadric();
gluQuadricDrawStyle( gluq, GLU_FILL );
gluQuadricTexture( gluq, GL_TRUE );
gluQuadricOrientation( gluq, GLU_OUTSIDE );
gluDisk( gluq, 0.0, r2, divisions, divisions);
gluDeleteQuadric( gluq );
/* restore the matrix stack and mode. */
glPopMatrix();
glMatrixMode( savemode );
}
}
}
void drawQuadrilateral(double x1, double y1, double z1,
double x2, double y2, double z2,
double x3, double y3, double z3,
double x4, double y4, double z4)
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile,
"polymesh { points=((%f,%f,%f),(%f,%f,%f),(%f,%f,%f),(%f,%f,%f)); faces=((0,1,2,3));\n", x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4);
_dump_current_material();
fprintf(mds->m_rayFile, "})\n");
}
else
{
double x21, y21, z21, x31, y31, z31, x41, y41, z41, x23, y23, z23, x43, y43, z43;
/* the normal to the triangle is the cross product of two of its edges. */
x21 = x2 - x1;
y21 = y2 - y1;
z21 = z2 - z1;
x31 = x3 - x1;
y31 = y3 - y1;
z31 = z3 - z1;
x41 = x4 - x1;
y41 = y4 - y1;
z41 = z4 - z1;
x23 = x2 - x3;
y23 = y2 - y3;
z23 = z2 - z3;
x43 = x4 - x3;
y43 = y4 - y3;
z43 = z4 - z3;
// triangle 1 2 3
glBegin(GL_TRIANGLES);
glNormal3d(y21*z31 - z21*y31, z21*x31 - x21*z31, x21*y31 - y21*x31);
glVertex3d(x1, y1, z1);
glVertex3d(x2, y2, z2);
glVertex3d(x3, y3, z3);
glEnd();
// triangle 1 2 4
glBegin(GL_TRIANGLES);
glNormal3d(y41*z21 - z41*y21, z21*x41 - x21*z41, x41*y21 - y41*x21);
glVertex3d(x1, y1, z1);
glVertex3d(x2, y2, z2);
glVertex3d(x4, y4, z4);
glEnd();
// triangle 2 3 4 ¥¼°µ
glBegin(GL_TRIANGLES);
glNormal3d(y23*z43 - z23*y43, z43*x23 - x43*z23, x23*y43 - y23*x43);
glVertex3d(x2, y2, z2);
glVertex3d(x3, y3, z3);
glVertex3d(x4, y4, z4);
glEnd();
// triangle 1 3 4 ¥¼°µ
glBegin(GL_TRIANGLES);
glNormal3d(y31*z41 - z31*y41, z41*x31 - x41*z31, x31*y41 - y31*x41);
glVertex3d(x1, y1, z1);
glVertex3d(x3, y3, z3);
glVertex3d(x4, y4, z4);
glEnd();
}
}
void drawWing()
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
_dump_current_material();
fprintf(mds->m_rayFile, "})))\n" );
}
else
{
/* remember which matrix mode OpenGL was in. */
int savemode;
glGetIntegerv( GL_MATRIX_MODE, &savemode );
/* switch to the model matrix and scale by x,y,z. */
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
glBegin(GL_POLYGON);
glVertex3d(0,1.4,0);
glVertex3d(.1,1.37,0);
glVertex3d(.2,1.35,0);
glVertex3d(.2,0,0);
glVertex3d(0,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(.2,1.35,0);
glVertex3d(.4,2,0);
glVertex3d(.5,1,0);
glVertex3d(.5,-1,0);
glVertex3d(.2,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(0,0,0);
glVertex3d(.6,0,0);
glVertex3d(.5,-1,0);
glVertex3d(0,-2,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(0.3,0.9,0);
glVertex3d(0.8,0.9,0);
glVertex3d(1.1,-0.6,0);
glVertex3d(0.5,-1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(0,0,0);
glVertex3d(0.85,-.75,0);
glVertex3d(0.4,-1.15,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(0.8,0.9,0);
glVertex3d(1.2,1,0);
glVertex3d(2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(0.8,0.9,0);
glVertex3d(1.1,-0.6,0);
glVertex3d(2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(1.2,1,0);
glVertex3d(1.4,1.1,0);
glVertex3d(3.9,0,0);
glVertex3d(2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(1.4,1.1,0);
glVertex3d(1.6,1.3,0);
glVertex3d(4.15,0.5,0);
glVertex3d(3.9,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(1.6,1.3,0);
glVertex3d(1.75,1.6,0);
glVertex3d(4.4,0.85,0);
glVertex3d(4.15,0.5,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(1.75,1.6,0);
glVertex3d(1.85,1.9,0);
glVertex3d(5,1.3,0);
glVertex3d(4.4,0.85,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(1.85,1.9,0);
glVertex3d(1.9,2.2,0);
glVertex3d(7,2.2,0);
glVertex3d(5,1.3,0);
glEnd();
//------------------------leftSIDE
glBegin(GL_POLYGON);
glVertex3d(-0,1.4,0);
glVertex3d(-.1,1.37,0);
glVertex3d(-.2,1.35,0);
glVertex3d(-.2,0,0);
glVertex3d(-0,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-.2,1.35,0);
glVertex3d(-.4,2,0);
glVertex3d(-.5,1,0);
glVertex3d(-.5,-1,0);
glVertex3d(-.2,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-0,0,0);
glVertex3d(-.6,0,0);
glVertex3d(-.5,-1,0);
glVertex3d(-0,-2,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-0.3,0.9,0);
glVertex3d(-0.8,0.9,0);
glVertex3d(-1.1,-0.6,0);
glVertex3d(-0.5,-1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-0,0,0);
glVertex3d(-0.85,-.75,0);
glVertex3d(-0.4,-1.15,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-0.8,0.9,0);
glVertex3d(-1.2,1,0);
glVertex3d(-2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-0.8,0.9,0);
glVertex3d(-1.1,-0.6,0);
glVertex3d(-2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-1.2,1,0);
glVertex3d(-1.4,1.1,0);
glVertex3d(-3.9,0,0);
glVertex3d(-2.35,-0.1,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-1.4,1.1,0);
glVertex3d(-1.6,1.3,0);
glVertex3d(-4.15,0.5,0);
glVertex3d(-3.9,0,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-1.6,1.3,0);
glVertex3d(-1.75,1.6,0);
glVertex3d(-4.4,0.85,0);
glVertex3d(-4.15,0.5,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-1.75,1.6,0);
glVertex3d(-1.85,1.9,0);
glVertex3d(-5,1.3,0);
glVertex3d(-4.4,0.85,0);
glEnd();
glBegin(GL_POLYGON);
glVertex3d(-1.85,1.9,0);
glVertex3d(-1.9,2.2,0);
glVertex3d(-7,2.2,0);
glVertex3d(-5,1.3,0);
glEnd();
/* restore the model matrix stack, and switch back to the matrix
mode we were in. */
glPopMatrix();
glMatrixMode( savemode );
}
}
void drawBox( double x, double y, double z )
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile,
"scale(%f,%f,%f,translate(0.5,0.5,0.5,box {\n", x, y, z );
_dump_current_material();
fprintf(mds->m_rayFile, "})))\n\n" );
}
else
{
/* remember which matrix mode OpenGL was in. */
int savemode;
glGetIntegerv( GL_MATRIX_MODE, &savemode );
/* switch to the model matrix and scale by x,y,z. */
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
glScaled( x, y, z );
glBegin( GL_QUADS );
glNormal3d( 0.0, 0.0, -1.0 );
glVertex3d( 0.0, 0.0, 0.0 );
glVertex3d( 0.0, 1.0, 0.0 );
glVertex3d( 1.0, 1.0, 0.0 );
glVertex3d( 1.0, 0.0, 0.0 );
glNormal3d( 0.0, -1.0, 0.0 );
glVertex3d( 0.0, 0.0, 0.0 );
glVertex3d( 1.0, 0.0, 0.0 );
glVertex3d( 1.0, 0.0, 1.0 );
glVertex3d( 0.0, 0.0, 1.0 );
glNormal3d( -1.0, 0.0, 0.0 );
glVertex3d( 0.0, 0.0, 0.0 );
glVertex3d( 0.0, 0.0, 1.0 );
glVertex3d( 0.0, 1.0, 1.0 );
glVertex3d( 0.0, 1.0, 0.0 );
glNormal3d( 0.0, 0.0, 1.0 );
glVertex3d( 0.0, 0.0, 1.0 );
glVertex3d( 1.0, 0.0, 1.0 );
glVertex3d( 1.0, 1.0, 1.0 );
glVertex3d( 0.0, 1.0, 1.0 );
glNormal3d( 0.0, 1.0, 0.0 );
glVertex3d( 0.0, 1.0, 0.0 );
glVertex3d( 0.0, 1.0, 1.0 );
glVertex3d( 1.0, 1.0, 1.0 );
glVertex3d( 1.0, 1.0, 0.0 );
glNormal3d( 1.0, 0.0, 0.0 );
glVertex3d( 1.0, 0.0, 0.0 );
glVertex3d( 1.0, 1.0, 0.0 );
glVertex3d( 1.0, 1.0, 1.0 );
glVertex3d( 1.0, 0.0, 1.0 );
glEnd();
/* restore the model matrix stack, and switch back to the matrix
mode we were in. */
glPopMatrix();
glMatrixMode( savemode );
}
}
void drawSphere(double r)
{
ModelerDrawState *mds = ModelerDrawState::Instance();
_setupOpenGl();
if (mds->m_rayFile)
{
_dump_current_modelview();
fprintf(mds->m_rayFile, "scale(%f,%f,%f,sphere {\n", r, r, r );
_dump_current_material();
fprintf(mds->m_rayFile, "}))\n\n" );
}
else
{
int divisions;
switch(mds->m_quality)
{
case HIGH:
divisions = 128; break;
case MEDIUM:
divisions = 32; break;
case LOW:
divisions = 16; break;
case POOR:
divisions = 8; break;
}
const float PI = 3.14159265f;
int n = divisions;
float origin_x = 0;
float origin_y = 0;
float origin_z = 0;
for (int i = 0; i < n / 2 ; i++) {
float a1 = i * (PI * 2) / n - (PI / 2);
float a2 = (i + 1) * (PI * 2) / n - (PI / 2);
glBegin(GL_QUAD_STRIP);
for (int j = 0; j <= n; j++) {
float a3 = j * (PI * 2) / n;
float n1_x = cos(a2) * sin(a3);
float n1_y = cos(a2) * cos(a3);
float n1_z = sin(a2);
float p1_x = (float)(origin_x + r * n1_x);
float p1_y = (float)(origin_y + r * n1_y);
float p1_z = (float)(origin_z + r * n1_z);
glNormal3f(n1_x, n1_y, n1_z);
glTexCoord2f( (GLfloat)(1.0 - j / (float) n), (GLfloat)(2 * (i + 1) / (float) n));
glVertex3f(p1_x, p1_y, p1_z);
n1_x = cos(a1) * sin(a3);
n1_y = cos(a1) * cos(a3);
n1_z = sin(a1);
p1_x = (float)(origin_x + r * n1_x);
p1_y = (float)(origin_y + r * n1_y);
p1_z = (float)(origin_z + r * n1_z);
glNormal3f(n1_x, n1_y, n1_z);
glTexCoord2f((GLfloat)(1.0 - j / (float) n), (GLfloat)(2 * i / (float) n));
glVertex3f(p1_x, p1_y, p1_z);
}
glEnd();
}
}
}