void display(UGWindow uwin)
{
glClear (GL_COLOR_BUFFER_BIT);
triangle ();
glFlush ();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
/* clear all pixels */
glClear (GL_COLOR_BUFFER_BIT);
/* draw white polygon (rectangle) with corners at
* (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)
*/
glColor4f (1.0, 1.0, 1.0, 1.0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glRotatef(10., 0.5, 0.5, 1.0);
// glTranslatef(-0.25, -0.25, 0);
#if 0
glTranslatef(0.25, 0.25, 0);
glScalef(0.5, 0.5, 1);
glTranslatef(-0.5, -0.5, 0);
glScalef(2, 2, 1);
// glScalef(0.5, 0.5, 1);
glColor4f (1.0, 1.0, 0, 1.0);
#endif
//glRotatef(10, 0, 0, 1.0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* don't wait!
* start processing buffered OpenGL routines
*/
glFlush ();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
ugSolidSpheref(1.0, 20, 16);
glFlush ();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear (GL_COLOR_BUFFER_BIT);
glColor4f (1.0, 1.0, 1.0, 1.0);
glLoadIdentity ();
glColor4f (1.0, 1.0, 1.0, 1.0);
draw_triangle ();
/*glEnable (GL_LINE_STIPPLE);*/
/*glLineStipple (1, 0xF0F0);*/
glColor4f(1.0f, 0.f, 0.f, 1.f);
glLoadIdentity ();
glTranslatef (-20.0, 0.0, 0.0);
draw_triangle ();
/*glLineStipple (1, 0xF00F);*/
glColor4f(0.0f, 1.f, 0.f, 1.f);
glLoadIdentity ();
glScalef (1.5, 0.5, 1.0);
draw_triangle ();
/*glLineStipple (1, 0x8888);*/
glColor4f(0.0f, 0.f, 1.f, 1.f);
glLoadIdentity ();
glRotatef (90.0, 0.0, 0.0, 1.0);
draw_triangle ();
/*glDisable (GL_LINE_STIPPLE);*/
glFlush ();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, texName[0]);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindTexture(GL_TEXTURE_2D, texName[1]);
glDrawArrays(GL_TRIANGLE_STRIP, 4, 4);
glFlush();
ugSwapBuffers(uwin);
}
/* display() draws 5 spheres at different z positions.
*/
static void display(UGWindow uwin)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderSphere (-2., -0.5, -1.0);
renderSphere (-1., -0.5, -2.0);
renderSphere (0., -0.5, -3.0);
renderSphere (1., -0.5, -4.0);
renderSphere (2., -0.5, -5.0);
glFlush();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear (GL_COLOR_BUFFER_BIT);
glColor4f (1.0, 1.0, 1.0, 1.0);
glLoadIdentity (); /* clear the matrix */
/* viewing transformation */
ugluLookAtf(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glScalef (1.0, 2.0, 1.0); /* modeling transformation */
ugWireCubef(1.0);
glFlush();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear (GL_COLOR_BUFFER_BIT);
glColor4f (1.0f, 1.0f, 1.0f, 1.0f);
glPushMatrix();
ugWireSpheref(1.0, 20, 16); /* draw sun */
glRotatef ((GLfloat) year, 0.0, 1.0, 0.0);
glTranslatef (2.0, 0.0, 0.0);
glRotatef ((GLfloat) day, 0.0, 1.0, 0.0);
ugWireSpheref(0.2, 10, 8); /* draw smaller planet */
glPopMatrix();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
glClear(GL_COLOR_BUFFER_BIT);
if (leftFirst) {
drawLeftTriangle();
drawRightTriangle();
}
else {
drawRightTriangle();
drawLeftTriangle();
}
glFlush();
ugSwapBuffers(uwin);
}
/* Here is where the light position is reset after the modeling
* transformation (glRotated) is called. This places the
* light at a new position in world coordinates. The cube
* represents the position of the light.
*/
void display(UGWindow uwin)
{
GLfloat position[] = { 0.0, 0.0, 1.5, 1.0 };
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix ();
ugluLookAtf(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glPushMatrix ();
glRotatef ((GLfloat) spin, 1.0, 0.0, 0.0);
glLightfv (GL_LIGHT0, GL_POSITION, position);
glTranslatef (0.0, 0.0, 1.5);
glDisable (GL_LIGHTING);
glColor4f (0.0, 1.0, 1.0, 1.0);
ugWireCubef(0.1);
glEnable (GL_LIGHTING);
glPopMatrix ();
ugSolidTorusf(0.275, 0.85, 8, 15);
glPopMatrix ();
glFlush ();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
GLfloat no_mat[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat mat_ambient[] = { 0.7, 0.7, 0.7, 1.0 };
GLfloat mat_ambient_color[] = { 0.8, 0.8, 0.2, 1.0 };
GLfloat mat_diffuse[] = { 0.1, 0.5, 0.8, 1.0 };
GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat no_shininess[] = { 0.0 };
GLfloat low_shininess[] = { 5.0 };
GLfloat high_shininess[] = { 100.0 };
GLfloat mat_emission[] = {0.3, 0.2, 0.2, 0.0};
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
/* draw sphere in first row, first column
* diffuse reflection only; no ambient or specular
*/
glPushMatrix();
glTranslatef (-3.75, 3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in first row, second column
* diffuse and specular reflection; low shininess; no ambient
*/
glPushMatrix();
glTranslatef (-1.25, 3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, low_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in first row, third column
* diffuse and specular reflection; high shininess; no ambient
*/
glPushMatrix();
glTranslatef (1.25, 3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, high_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in first row, fourth column
* diffuse reflection; emission; no ambient or specular reflection
*/
glPushMatrix();
glTranslatef (3.75, 3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, mat_emission);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in second row, first column
* ambient and diffuse reflection; no specular
*/
glPushMatrix();
glTranslatef (-3.75, 0.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in second row, second column
* ambient, diffuse and specular reflection; low shininess
*/
glPushMatrix();
glTranslatef (-1.25, 0.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, low_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in second row, third column
* ambient, diffuse and specular reflection; high shininess
*/
glPushMatrix();
glTranslatef (1.25, 0.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, high_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in second row, fourth column
* ambient and diffuse reflection; emission; no specular
*/
glPushMatrix();
glTranslatef (3.75, 0.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, mat_emission);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in third row, first column
* colored ambient and diffuse reflection; no specular
*/
glPushMatrix();
glTranslatef (-3.75, -3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient_color);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in third row, second column
* colored ambient, diffuse and specular reflection; low shininess
*/
glPushMatrix();
glTranslatef (-1.25, -3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient_color);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, low_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in third row, third column
* colored ambient, diffuse and specular reflection; high shininess
*/
glPushMatrix();
glTranslatef (1.25, -3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient_color);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, high_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, no_mat);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
/* draw sphere in third row, fourth column
* colored ambient and diffuse reflection; emission; no specular
*/
glPushMatrix();
glTranslatef (3.75, -3.0, 0.0);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient_color);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, mat_emission);
ugSolidSpheref(1.0, 16, 16);
glPopMatrix();
glFlush();
ugSwapBuffers(uwin);
}
void display(UGWindow uwin)
{
int i;
glClear (GL_COLOR_BUFFER_BIT);
/* select white for all lines */
glColor4f (1.0, 1.0, 1.0, 1.0);
/* in 1st row, 3 lines, each with a different stipple */
//glEnable (GL_LINE_STIPPLE);
//glLineStipple (1, 0x0101); /* dotted */
glColor4f(1., 0., 0., 1.);
drawOneLine (50.0, 125.0, 150.0, 125.0);
//glLineStipple (1, 0x00FF); /* dashed */
glColor4f(0., 1., 0., 1.);
drawOneLine (150.0, 125.0, 250.0, 125.0);
//glLineStipple (1, 0x1C47); /* dash/dot/dash */
glColor4f(0., 0., 1., 1.);
drawOneLine (250.0, 125.0, 350.0, 125.0);
glColor4f(1., 1., 1., 1.);
/* in 2nd row, 3 wide lines, each with different stipple */
glLineWidth (5.0);
//glLineStipple (1, 0x0101); /* dotted */
drawOneLine (50.0, 100.0, 150.0, 100.0);
//glLineStipple (1, 0x00FF); /* dashed */
glColor4f(1., 1., 0., 1.);
drawOneLine (150.0, 100.0, 250.0, 100.0);
//glLineStipple (1, 0x1C47); /* dash/dot/dash */
glColor4f(0., 1., 1., 1.);
drawOneLine (250.0, 100.0, 350.0, 100.0);
glLineWidth (1.0);
glColor4f(1., 0., 1., 1.);
/* in 3rd row, 6 lines, with dash/dot/dash stipple */
/* as part of a single connected line strip */
//glLineStipple (1, 0x1C47); /* dash/dot/dash */
#if 0
glBegin (GL_LINE_STRIP);
for (i = 0; i < 7; i++)
glVertex2f (50.0 + ((GLfloat) i * 50.0), 75.0);
glEnd ();
#else
{
GLfloat v[14];
for (i = 0; i < 7; i++) {
v[2*i] = 50.0 + ((GLfloat) i * 50.0); v[2*i+1] = 75.0;
}
glVertexPointer(2, GL_FLOAT, 0, v);
glEnableClientState(GL_VERTEX_ARRAY);
glDrawArrays(GL_LINE_STRIP, 0, 7);
}
#endif
glColor4f(1., 1., 1., 1.);
/* in 4th row, 6 independent lines with same stipple */
for (i = 0; i < 6; i++) {
drawOneLine (50.0 + ((GLfloat) i * 50.0), 50.0,
50.0 + ((GLfloat)(i+1) * 50.0), 50.0);
}
glColor4f(.8, .8, .8, 1.);
/* in 5th row, 1 line, with dash/dot/dash stipple */
/* and a stipple repeat factor of 5 */
//glLineStipple (5, 0x1C47); /* dash/dot/dash */
drawOneLine (50.0, 25.0, 350.0, 25.0);
//glDisable (GL_LINE_STIPPLE);
glFlush ();
ugSwapBuffers(uwin);
}
