ENH: thumbnail: optimize the thumbnail

1. set background to transparent
2. set the view to iso

Change-Id: Ib3371e60bea743ade55430a5d39b58f9b9acf050
This commit is contained in:
lane.wei 2023-05-10 19:32:05 +08:00 committed by Lane.Wei
parent 53787b4c9e
commit a2da7e391b
3 changed files with 24 additions and 7 deletions

View File

@ -87,7 +87,7 @@ void Camera::set_zoom(double zoom)
void Camera::select_view(const std::string& direction)
{
if (direction == "iso")
set_default_orientation();
set_iso_orientation();
else if (direction == "left")
look_at(m_target - m_distance * Vec3d::UnitX(), m_target, Vec3d::UnitZ());
else if (direction == "right")
@ -578,6 +578,19 @@ void Camera::set_default_orientation()
m_view_matrix.fromPositionOrientationScale(m_view_rotation * (-camera_pos), m_view_rotation, Vec3d::Ones());*/
}
void Camera::set_iso_orientation()
{
m_zenit = 45.0f;
const double theta_rad = Geometry::deg2rad(-(double)m_zenit);
const double phi_rad = Geometry::deg2rad(45.0);
const double sin_theta = ::sin(theta_rad);
const Vec3d camera_pos = m_target + m_distance * Vec3d(sin_theta * ::sin(phi_rad), sin_theta * ::cos(phi_rad), ::cos(theta_rad));
m_view_rotation = Eigen::AngleAxisd(theta_rad, Vec3d::UnitX()) * Eigen::AngleAxisd(phi_rad, Vec3d::UnitZ());
m_view_rotation.normalize();
m_view_matrix.fromPositionOrientationScale(m_view_rotation * (-camera_pos), m_view_rotation, Vec3d::Ones());
}
Vec3d Camera::validate_target(const Vec3d& target) const
{
BoundingBoxf3 test_box = m_scene_box;

View File

@ -163,6 +163,7 @@ private:
void set_distance(double distance);
void set_default_orientation();
void set_iso_orientation();
Vec3d validate_target(const Vec3d& target) const;
void update_zenit();
void update_target();

View File

@ -5563,9 +5563,12 @@ void GLCanvas3D::render_thumbnail_internal(ThumbnailData& thumbnail_data, const
else {
camera.zoom_to_box(volumes_box);
const Vec3d& target = camera.get_target();
double distance = camera.get_distance();
camera.look_at(target - 0.707 * distance * Vec3d::UnitY() + 0.3 * distance * Vec3d::UnitZ(), target, Vec3d::UnitY() + Vec3d::UnitZ());
//const Vec3d& target = camera.get_target();
//double distance = camera.get_distance();
//camera.look_at(target - 0.707 * distance * Vec3d::UnitY() + 0.3 * distance * Vec3d::UnitZ(), target, Vec3d::UnitY() + Vec3d::UnitZ());
//BBS: use original iso view for thumbnail
camera.select_view("iso");
}
camera.apply_view_matrix();
@ -5590,9 +5593,9 @@ void GLCanvas3D::render_thumbnail_internal(ThumbnailData& thumbnail_data, const
//glsafe(::glClearColor(0.50f, 0.5f, 0.5f, 1.0f));
//glsafe(::glClearColor(0.121568f, 0.121568f, 0.121568f, 1.0f));
//glsafe(::glClearColor(0.17647f, 0.17647f, 0.17647f, 1.0f));
glsafe(::glClearColor(0.906f, 0.906f, 0.906f, 1.0f));
//glsafe(::glClearColor(0.906f, 0.906f, 0.906f, 1.0f));
//glsafe(::glClearColor(0.37647f, 0.37647f, 0.37647f, 0.5f)); too lite
//glsafe(::glClearColor(0.23529f, 0.26666f, 0.2745f, 1.0f));
glsafe(::glClearColor(0.0f, 0.0f, 0.0f, 0.0f));
}
glsafe(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));