static cairo_time_t
draw_spiral_nz_na_di (cairo_t *cr, int width, int height, int loops)
{
return draw_spiral (cr,
CAIRO_FILL_RULE_WINDING,
NONALIGN,
DIAGCLOSE,
width, height, loops);
}
static cairo_time_t
draw_spiral_eo_pa_di (cairo_t *cr, int width, int height, int loops)
{
return draw_spiral (cr,
CAIRO_FILL_RULE_EVEN_ODD,
PIXALIGN,
DIAGCLOSE,
width, height, loops);
}
static cairo_time_t
draw_spiral_eo_na_re (cairo_t *cr, int width, int height, int loops)
{
return draw_spiral (cr,
CAIRO_FILL_RULE_EVEN_ODD,
NONALIGN,
RECTCLOSE,
width, height, loops);
}
static cairo_time_t
draw_spiral_nz_pa_re (cairo_t *cr, int width, int height, int loops)
{
return draw_spiral (cr,
CAIRO_FILL_RULE_WINDING,
PIXALIGN,
RECTCLOSE,
width, height, loops);
}
ENTRYPOINT void
draw_hypnowheel (ModeInfo *mi)
{
hypnowheel_configuration *bp = &bps[MI_SCREEN(mi)];
Display *dpy = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
int i;
if (!bp->glx_context)
return;
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(bp->glx_context));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix ();
{
double x, y, z;
get_position (bp->rot, &x, &y, &z, True);
glTranslatef((x - 0.5) * 8,
(y - 0.5) * 8,
0);
get_rotation (bp->rot, &x, &y, &z, True);
glRotatef (x * 360, 1.0, 0.0, 0.0);
glRotatef (y * 360, 0.0, 1.0, 0.0);
glRotatef (z * 360, 0.0, 0.0, 1.0);
}
mi->polygon_count = 0;
glScalef (45, 45, 45);
for (i = 0; i < nlayers; i++)
{
disc *d = &bp->discs[i];
double x, y, z;
rotator *rot = (do_symmetric ? bp->discs[(i & ~0x1)].rot : d->rot);
Bool tick = (!do_symmetric || i == 0);
glPushMatrix();
d->color++;
if (d->color >= bp->ncolors)
d->color = 0;
get_position (rot, &x, &y, &z, tick);
x -= 0.5;
y -= 0.5;
x *= 0.1;
y *= 0.1;
glTranslatef (x, y, 0);
d->twist = (z * twistiness *
((i & 1) ? 1 : -1));
get_rotation (rot, &x, &y, &z, tick);
glRotatef (360 * z, 0, 0, 1); /* rotation of this disc */
draw_spiral (mi, &bp->discs[i]);
glPopMatrix();
}
glPopMatrix ();
if (mi->fps_p) do_fps (mi);
glFinish();
glXSwapBuffers(dpy, window);
}
void GL_draw_frame( void * vp )
{
static float rot;
static int t0;
float s;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLineWidth(1.f);
set_camera_view();
if ( t0 == 0 ) {
init_VBO();
t0 = 1;
}
int now = get_milliseconds();
/*
while ( now - t0 > 20 ) {
rot += 1.0f;
t0 += 20;
if ( rot > 360.f )
rot -= 360.f;
if ( rot < 0.f )
rot += 360.f;
}
*/
// hack to get rotation timer right
const float p180 = 0.017453126f;
const float c180p = 57.295776f;
const float c2pi = 6.2831854f;
const int ms_per_frame = 20; // milliseconds per frame
const float rot_per_frame = 1.0f * p180;
/*
while ( now - t0 > ms_per_frame ) {
rot += 1.0f;
t0 += ms_per_frame;
} */
static int set = 0;
if ( t0 <= 0 )
t0 = 1;
if ( now - t0 > 0 )
{
int diff = now - t0;
/* the rotation is incremented 1 rot_per_frame each 1 ms_per_frame */
float newrot = rot + (rot_per_frame/(float)ms_per_frame) * ((float)diff);
if ( set < 20 )
core.printf( "hiccup > 2pi: before: %f, %f ", rot, sinf(rot) );
rot = newrot;
// catch it up
t0 = now;
if ( set < 20 )
core.printf( "after: %f, %f\n", rot, sinf( rot ) );
// clamp
if ( rot > c2pi ) {
rot = rot - c2pi;
set = 1; // no more print
core.printf( " --> MARK <-- \n" );
}
if ( set != 0 )
++set;
}
const float rotdeg = rot * c180p;
/// -- DRAW ---
// rotating wire spiral
glColor4ub( 255,255,255,255 );
glPushMatrix();
glRotatef( rotdeg, 0, 1, 0 );
draw_spiral( 24.0f, 10.f, 0.05f );
glPopMatrix();
// rotating circle
glEnable(GL_TEXTURE_2D);
glBindTexture( GL_TEXTURE_2D, core.materials.findByName( "jr_bob" )->img->texhandle );
glPushMatrix();
glTranslatef( 60.f, 60.f, -60.f );
glRotatef( rotdeg, 0, 1, 0 );
draw_circle( 0, 0, 10.f );
GL_TEX_SQUARE( -10.f, 30.f, 0.f, 20.f );
glRotatef( 180, 0, 1, 0 );
draw_circle( 0, 0, 10.f );
GL_TEX_SQUARE( -10.f, 30.f, 0.f, 20.f );
glBegin(GL_LINES); glVertex3f( 0, -30.f, 0 ); glVertex3f( 0, 30.f, 0 ); glEnd();
glPopMatrix();
glDisable( GL_TEXTURE_2D );
// FIXME : obviously move, later.
tessellatedPlane_t& tes = *(tessellatedPlane_t*)vp;
// heightmap triangles
glInterleavedArrays( GL_C3F_V3F, 0, tes.array );
glDrawArrays( GL_TRIANGLE_STRIP, 0, tes.num_verts );
//glDrawArrays( GL_LINE_STRIP, 0, tes->num_verts );
// gazillion boxes
core.drawer.drawLists();
// serpinski
glColor4ub( 255,255,0,255 );
glPushMatrix();
glTranslatef( 250.f, 100.f, -250.f );
glRotatef( rotdeg * 1.618f, 0, 1, 0 );
glRotatef( rotdeg , 0.707, 0, -0.707 );
glDisable( GL_CULL_FACE );
draw_serpinski( 3, 40.f );
glEnable( GL_CULL_FACE );
glPopMatrix();
glColor4ub( 255,255,255,255 );
// icosahedron
glPushMatrix();
glTranslatef( 500.f, 100.f, -250.f );
trans_spiral_f( rot, 50.f /*radius*/, 1.0f/*rot rate*/, 1.0f/*climb rate*/, 50.f /*ceiling*/ );
s = 14.f;
s = (sinf( rot * 2.718f ) + 1.1f) * 14.f;
glScalef( s, s, s );
glRotatef( rotdeg * 5.f, 0, 1, 0 );
glRotatef( rotdeg * 3.f , 0.707, 0, -0.707 );
glColor4ub( 230, 100, 0, 255 );
draw_icosahedron();
glColor4ub( 255, 255, 255, 255 );
draw_icosahedron_wire();
glPopMatrix();
// axis marker
float l = 100.f;
glColor3f( 1.f, 0.f, 1.f );
glLineWidth(2.f);
glBegin( GL_LINES );
glVertex3i( 0,0,0 );
glVertex3i( 0,l,0);
glVertex3i( 0,0,0 );
glVertex3i( l,0,0 );
glVertex3i( 0,0,0 );
glVertex3i( 0,0,-l );
glEnd();
// 4-sided
glPushMatrix();
glTranslatef( 300, 100, 0 );
s = 20.f;
glScalef( s, s, s );
glRotatef( rotdeg, 0, 1, 0 );
glColor4ub( 0, 255, 255, 128 );
draw_triangle4(0);
glColor4ub( 255, 255, 255, 255 );
draw_triangle4(1);
glPopMatrix();
// 4-sided, 2nd type
glPushMatrix();
glTranslatef( 340, 100, 0 );
s = 20.f;
glScalef( s, s, s );
glRotatef( rotdeg, 0, 1, 0 );
glColor4ub( 100, 0, 100, 128 );
draw_triangle4_2(0);
glColor4ub( 255, 255, 255, 255 );
draw_triangle4(1); // inner lines don't draw right, so use first form
glPopMatrix();
// 5-sided
glPushMatrix();
glTranslatef( 100, 100, -50 );
s = 20.f;
glScalef( s, s, s );
glRotatef( rotdeg, 1, 0, 0 );
glColor4ub( 100, 50, 0, 200 );
draw_triangle5(0);
glColor4ub( 255, 255, 255, 255 );
draw_triangle5(1);
glPopMatrix();
// unit-cube w/ tri
glPushMatrix();
glTranslatef( 150.f, 130.f, -800.f );
glTranslatef( 0.f, 0.f, sinf(rot)*1600.f );
s = 20.f;
glScalef( s, s, s );
glRotatef( 90, 1, 0, 0 );
glRotatef( sinf(rotdeg*0.03f)*180.f, 0, 1, 0 );
glColor4ub( 128,128,128,255 );
draw_unitcube(0);
glColor4ub( 255,255,255,255 );
draw_unitcube(1);
glTranslatef( 0, 1.f, 0.f );
glColor4ub( 128,128,128,255 );
draw_triangle5(0);
glColor4ub( 255,255,255,255 );
draw_triangle5(1);
glPopMatrix();
// test model
//glEnable(GL_LIGHTING);
glPushMatrix();
glTranslatef( 300.f, 75.f, 200.f );
glRotatef( 315.f, 0,1,0 );
glEnable(GL_LIGHT0);
s = 550.f;
glScalef( s, s, s );
glColor4ub( 255,255,255,255);
//draw_test_model_Vertex_Arrays();
draw_test_model_VBO();
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor4ub( 128,128,168,255 );
//draw_test_model_Vertex_Arrays();
draw_test_model_VBO();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glPopMatrix();
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
glFlush();
SDL_GL_SwapBuffers();
}