diff options
| -rw-r--r-- | indra/newview/lltoolpie.cpp | 122 |
1 files changed, 73 insertions, 49 deletions
diff --git a/indra/newview/lltoolpie.cpp b/indra/newview/lltoolpie.cpp index 9549f180df..a84346ab84 100644 --- a/indra/newview/lltoolpie.cpp +++ b/indra/newview/lltoolpie.cpp @@ -1709,8 +1709,13 @@ void LLToolPie::showVisualContextMenuEffect() effectp->setDuration(0.25f); } +typedef enum e_near_far +{ + NEAR_INTERSECTION, + FAR_INTERSECTION +} ENearFar; -bool intersect_ray_with_sphere( const LLVector3& ray_pt, const LLVector3& ray_dir, const LLVector3& sphere_center, F32 sphere_radius, LLVector3& intersection_pt) +bool intersect_ray_with_sphere( const LLVector3& ray_pt, const LLVector3& ray_dir, const LLVector3& sphere_center, F32 sphere_radius, e_near_far near_far, LLVector3& intersection_pt) { // do ray/sphere intersection by solving quadratic equation LLVector3 sphere_to_ray_start_vec = ray_pt - sphere_center; @@ -1718,10 +1723,11 @@ bool intersect_ray_with_sphere( const LLVector3& ray_pt, const LLVector3& ray_di F32 C = sphere_to_ray_start_vec.lengthSquared() - (sphere_radius * sphere_radius); F32 discriminant = B*B - 4.f*C; - if (discriminant > 0.f) + if (discriminant >= 0.f) { // intersection detected, now find closest one F32 t0 = (-B - sqrtf(discriminant)) / 2.f; - if (t0 > 0.f) + + if (t0 > 0.f && near_far == NEAR_INTERSECTION) { intersection_pt = ray_pt + ray_dir * t0; } @@ -1732,8 +1738,10 @@ bool intersect_ray_with_sphere( const LLVector3& ray_pt, const LLVector3& ray_di } return true; } - - return false; + else + { // no intersection + return false; + } } void LLToolPie::startCameraSteering() @@ -1786,64 +1794,80 @@ void LLToolPie::startCameraSteering() void LLToolPie::steerCameraWithMouse(S32 x, S32 y) { - const F32 MIN_ROTATION_RADIUS_FRACTION = 0.2f; - + const LLViewerCamera& camera = LLViewerCamera::instance(); + const LLCoordFrame& rotation_frame = gAgent.getFrameAgent(); const LLVector3 pick_pos = gAgent.getPosAgentFromGlobal(mSteerPick.mPosGlobal); - const LLVector3 rotation_center = gAgent.getFrameAgent().getOrigin(); - // FIXME: get this to work with camera tilt (i.e. sitting on a rotating object) - const LLVector3 rotation_up_axis(LLVector3::z_axis); - - LLVector3 object_rotation_center = rotation_center + parallel_component(pick_pos - rotation_center, rotation_up_axis); - F32 min_rotation_radius = MIN_ROTATION_RADIUS_FRACTION * dist_vec(rotation_center, LLViewerCamera::instance().getOrigin());; - F32 pick_distance_from_rotation_center = llclamp(dist_vec(pick_pos, object_rotation_center), min_rotation_radius, F32_MAX); + const LLVector3 pick_rotation_center = rotation_frame.getOrigin() + parallel_component(pick_pos - rotation_frame.getOrigin(), rotation_frame.getUpAxis()); + const F32 MIN_ROTATION_RADIUS_FRACTION = 0.2f; + const F32 min_rotation_radius = MIN_ROTATION_RADIUS_FRACTION * dist_vec(pick_rotation_center, camera.getOrigin());; + const F32 pick_distance_from_rotation_center = llclamp(dist_vec(pick_pos, pick_rotation_center), min_rotation_radius, F32_MAX); + const LLVector3 camera_to_rotation_center = pick_rotation_center - camera.getOrigin(); + const LLVector3 adjusted_camera_pos = LLViewerCamera::instance().getOrigin() + projected_vec(camera_to_rotation_center, rotation_frame.getUpAxis()); + const F32 camera_distance_from_rotation_center = dist_vec(adjusted_camera_pos, pick_rotation_center); - LLVector3 mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(x, y), rotation_up_axis); + LLVector3 mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(x, y), rotation_frame.getUpAxis()); mouse_ray.normalize(); - LLVector3 old_mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(mMouseSteerX, mMouseSteerY), rotation_up_axis); + LLVector3 old_mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(mMouseSteerX, mMouseSteerY), rotation_frame.getUpAxis()); old_mouse_ray.normalize(); - LLVector3 camera_pos = gAgentCamera.getCameraPositionAgent(); - LLVector3 camera_to_rotation_center = object_rotation_center - camera_pos; - LLVector3 adjusted_camera_pos = camera_pos + projected_vec(camera_to_rotation_center, rotation_up_axis); - LLVector3 rotation_fwd_axis = LLViewerCamera::instance().getAtAxis() - projected_vec(LLViewerCamera::instance().getAtAxis(), rotation_up_axis); - rotation_fwd_axis.normalize(); - F32 pick_dist = dist_vec(pick_pos, adjusted_camera_pos); - + F32 yaw_angle; + F32 old_yaw_angle; LLVector3 mouse_on_sphere; - bool mouse_hit_sphere = intersect_ray_with_sphere(adjusted_camera_pos + (mouse_ray * pick_dist * 1.1f), - -1.f * mouse_ray, - object_rotation_center, - pick_distance_from_rotation_center, - mouse_on_sphere); - LLVector3 old_mouse_on_sphere; - intersect_ray_with_sphere(adjusted_camera_pos + (old_mouse_ray * pick_dist * 1.1f), - -1.f * old_mouse_ray, - object_rotation_center, - pick_distance_from_rotation_center, - old_mouse_on_sphere); - if (mouse_hit_sphere) + if (intersect_ray_with_sphere( + adjusted_camera_pos, + mouse_ray, + pick_rotation_center, + pick_distance_from_rotation_center, + FAR_INTERSECTION, + mouse_on_sphere)) { - // calculate rotation frame in screen space - LLVector3 screen_rotation_up_axis = orthogonal_component(rotation_up_axis, LLViewerCamera::instance().getAtAxis()); - screen_rotation_up_axis.normalize(); - - LLVector3 screen_rotation_left_axis = screen_rotation_up_axis % LLViewerCamera::instance().getAtAxis(); + LLVector3 mouse_sphere_offset = mouse_on_sphere - pick_rotation_center; + yaw_angle = atan2f(mouse_sphere_offset * rotation_frame.getLeftAxis(), mouse_sphere_offset * rotation_frame.getAtAxis()); + } + else + { + yaw_angle = F_PI_BY_TWO + asinf(pick_distance_from_rotation_center / camera_distance_from_rotation_center); + if (mouse_ray * rotation_frame.getLeftAxis() < 0.f) + { + yaw_angle *= -1.f; + } + } - LLVector3 rotation_furthest_pt = object_rotation_center + pick_distance_from_rotation_center * rotation_fwd_axis; - F32 mouse_lateral_distance = llclamp(((mouse_on_sphere - rotation_furthest_pt) * screen_rotation_left_axis) / pick_distance_from_rotation_center, -1.f, 1.f); - F32 old_mouse_lateral_distance = llclamp(((old_mouse_on_sphere - rotation_furthest_pt) * screen_rotation_left_axis) / pick_distance_from_rotation_center, -1.f, 1.f); + if (intersect_ray_with_sphere( + adjusted_camera_pos, + old_mouse_ray, + pick_rotation_center, + pick_distance_from_rotation_center, + FAR_INTERSECTION, + old_mouse_on_sphere)) + { + LLVector3 mouse_sphere_offset = old_mouse_on_sphere - pick_rotation_center; + old_yaw_angle = atan2f(mouse_sphere_offset * rotation_frame.getLeftAxis(), mouse_sphere_offset * rotation_frame.getAtAxis()); + } + else + { + old_yaw_angle = F_PI_BY_TWO + asinf(pick_distance_from_rotation_center / camera_distance_from_rotation_center); - F32 yaw_angle = asinf(mouse_lateral_distance); - F32 old_yaw_angle = asinf(old_mouse_lateral_distance); + if (mouse_ray * rotation_frame.getLeftAxis() < 0.f) + { + old_yaw_angle *= -1.f; + } + } - F32 delta_angle = yaw_angle - old_yaw_angle; - if (!mClockwise) delta_angle *= -1.f; + const F32 delta_angle = yaw_angle - old_yaw_angle; + if (mClockwise) + { gAgent.yaw(delta_angle); - mMouseSteerX = x; - mMouseSteerY = y; } + else + { + gAgent.yaw(-delta_angle); + } + + mMouseSteerX = x; + mMouseSteerY = y; } |