static inline void DrawCollisionVolume(const CollisionVolume* vol)
{
static unsigned int listIDs[3] = {0, 0, 0};
switch (vol->GetVolumeType()) {
case CollisionVolume::COLVOL_TYPE_FOOTPRINT:
// fall through, this is too hard to render correctly so just render sphere :)
case CollisionVolume::COLVOL_TYPE_SPHERE:
// fall through, sphere is special case of ellipsoid
case CollisionVolume::COLVOL_TYPE_ELLIPSOID: {
// scaled sphere: radius, slices, stacks
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetHScale(1), vol->GetHScale(2));
glWireSphere(&listIDs[0], 20, 20);
} break;
case CollisionVolume::COLVOL_TYPE_CYLINDER: {
// scaled cylinder: base-radius, top-radius, height, slices, stacks
//
// (cylinder base is drawn at unit center by default so add offset
// by half major axis to visually match the mathematical situation,
// height of the cylinder equals the unit's full major axis)
switch (vol->GetPrimaryAxis()) {
case CollisionVolume::COLVOL_AXIS_X: {
glTranslatef(-(vol->GetHScale(0)), 0.0f, 0.0f);
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetScale(0), vol->GetHScale(1), vol->GetHScale(2));
glRotatef( 90.0f, 0.0f, 1.0f, 0.0f);
} break;
case CollisionVolume::COLVOL_AXIS_Y: {
glTranslatef(0.0f, -(vol->GetHScale(1)), 0.0f);
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetScale(1), vol->GetHScale(2));
glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);
} break;
case CollisionVolume::COLVOL_AXIS_Z: {
glTranslatef(0.0f, 0.0f, -(vol->GetHScale(2)));
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetHScale(1), vol->GetScale(2));
} break;
}
glWireCylinder(&listIDs[1], 20, 1.0f);
} break;
case CollisionVolume::COLVOL_TYPE_BOX: {
// scaled cube: length, width, height
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetScale(0), vol->GetScale(1), vol->GetScale(2));
glWireCube(&listIDs[2]);
} break;
}
}
static inline void DrawCollisionVolume(const CollisionVolume* vol)
{
glPushMatrix();
switch (vol->GetVolumeType()) {
case CollisionVolume::COLVOL_TYPE_ELLIPSOID:
case CollisionVolume::COLVOL_TYPE_SPHERE: {
// scaled sphere is special case of ellipsoid: radius, slices, stacks
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetHScale(1), vol->GetHScale(2));
glWireSphere(&volumeDisplayListIDs[0], 20, 20);
} break;
case CollisionVolume::COLVOL_TYPE_CYLINDER: {
// scaled cylinder: base-radius, top-radius, height, slices, stacks
//
// (cylinder base is drawn at unit center by default so add offset
// by half major axis to visually match the mathematical situation,
// height of the cylinder equals the unit's full major axis)
switch (vol->GetPrimaryAxis()) {
case CollisionVolume::COLVOL_AXIS_X: {
glTranslatef(-(vol->GetHScale(0)), 0.0f, 0.0f);
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetScale(0), vol->GetHScale(1), vol->GetHScale(2));
glRotatef( 90.0f, 0.0f, 1.0f, 0.0f);
} break;
case CollisionVolume::COLVOL_AXIS_Y: {
glTranslatef(0.0f, -(vol->GetHScale(1)), 0.0f);
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetScale(1), vol->GetHScale(2));
glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);
} break;
case CollisionVolume::COLVOL_AXIS_Z: {
glTranslatef(0.0f, 0.0f, -(vol->GetHScale(2)));
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetHScale(0), vol->GetHScale(1), vol->GetScale(2));
} break;
}
glWireCylinder(&volumeDisplayListIDs[1], 20, 1.0f);
} break;
case CollisionVolume::COLVOL_TYPE_BOX: {
// scaled cube: length, width, height
glTranslatef(vol->GetOffset(0), vol->GetOffset(1), vol->GetOffset(2));
glScalef(vol->GetScale(0), vol->GetScale(1), vol->GetScale(2));
glWireCube(&volumeDisplayListIDs[2]);
} break;
}
glPopMatrix();
}
