Dimensions of scale on rotate gizmo as function of object size

This commit is contained in:
Enrico Turri 2018-09-21 13:44:38 +02:00
parent 99e90f2bfb
commit 8cea821c6a
2 changed files with 28 additions and 17 deletions

View file

@ -336,10 +336,9 @@ const unsigned int GLGizmoRotate::AngleResolution = 64;
const unsigned int GLGizmoRotate::ScaleStepsCount = 72;
const float GLGizmoRotate::ScaleStepRad = 2.0f * (float)PI / GLGizmoRotate::ScaleStepsCount;
const unsigned int GLGizmoRotate::ScaleLongEvery = 2;
const float GLGizmoRotate::ScaleLongTooth = 2.0f;
const float GLGizmoRotate::ScaleShortTooth = 1.0f;
const float GLGizmoRotate::ScaleLongTooth = 0.1f; // in percent of radius
const unsigned int GLGizmoRotate::SnapRegionsCount = 8;
const float GLGizmoRotate::GrabberOffset = 5.0f;
const float GLGizmoRotate::GrabberOffset = 0.15f; // in percent of radius
GLGizmoRotate::GLGizmoRotate(GLCanvas3D& parent, GLGizmoRotate::Axis axis)
: GLGizmoBase(parent)
@ -347,6 +346,10 @@ GLGizmoRotate::GLGizmoRotate(GLCanvas3D& parent, GLGizmoRotate::Axis axis)
, m_angle(0.0)
, m_center(0.0, 0.0, 0.0)
, m_radius(0.0f)
, m_snap_coarse_in_radius(0.0f)
, m_snap_coarse_out_radius(0.0f)
, m_snap_fine_in_radius(0.0f)
, m_snap_fine_out_radius(0.0f)
{
}
@ -368,6 +371,10 @@ void GLGizmoRotate::on_start_dragging(const BoundingBoxf3& box)
{
m_center = box.center();
m_radius = Offset + box.radius();
m_snap_coarse_in_radius = m_radius / 3.0f;
m_snap_coarse_out_radius = 2.0f * m_snap_coarse_in_radius;
m_snap_fine_in_radius = m_radius;
m_snap_fine_out_radius = m_snap_fine_in_radius + m_radius * ScaleLongTooth;
}
void GLGizmoRotate::on_update(const Linef3& mouse_ray)
@ -383,20 +390,16 @@ void GLGizmoRotate::on_update(const Linef3& mouse_ray)
double len = mouse_pos.norm();
// snap to snap region
double in_radius = (double)m_radius / 3.0;
double out_radius = 2.0 * (double)in_radius;
if ((in_radius <= len) && (len <= out_radius))
// snap to coarse snap region
if ((m_snap_coarse_in_radius <= len) && (len <= m_snap_coarse_out_radius))
{
double step = 2.0 * (double)PI / (double)SnapRegionsCount;
theta = step * (double)std::round(theta / step);
}
else
{
// snap to scale
in_radius = (double)m_radius;
out_radius = in_radius + (double)ScaleLongTooth;
if ((in_radius <= len) && (len <= out_radius))
// snap to fine snap region (scale)
if ((m_snap_fine_in_radius <= len) && (len <= m_snap_fine_out_radius))
{
double step = 2.0 * (double)PI / (double)ScaleStepsCount;
theta = step * (double)std::round(theta / step);
@ -420,6 +423,10 @@ void GLGizmoRotate::on_render(const BoundingBoxf3& box) const
{
m_center = box.center();
m_radius = Offset + box.radius();
m_snap_coarse_in_radius = m_radius / 3.0f;
m_snap_coarse_out_radius = 2.0f * m_snap_coarse_in_radius;
m_snap_fine_in_radius = m_radius;
m_snap_fine_out_radius = m_radius * (1.0f + ScaleLongTooth);
}
::glEnable(GL_DEPTH_TEST);
@ -477,8 +484,8 @@ void GLGizmoRotate::render_circle() const
void GLGizmoRotate::render_scale() const
{
float out_radius_long = m_radius + ScaleLongTooth;
float out_radius_short = m_radius + ScaleShortTooth;
float out_radius_long = m_snap_fine_out_radius;
float out_radius_short = m_radius * (1.0f + 0.5f * ScaleLongTooth);
::glBegin(GL_LINES);
for (unsigned int i = 0; i < ScaleStepsCount; ++i)
@ -527,14 +534,14 @@ void GLGizmoRotate::render_reference_radius() const
{
::glBegin(GL_LINES);
::glVertex3f(0.0f, 0.0f, 0.0f);
::glVertex3f((GLfloat)(m_radius + GrabberOffset), 0.0f, 0.0f);
::glVertex3f((GLfloat)(m_radius * (1.0f + GrabberOffset)), 0.0f, 0.0f);
::glEnd();
}
void GLGizmoRotate::render_angle() const
{
float step_angle = (float)m_angle / AngleResolution;
float ex_radius = m_radius + GrabberOffset;
float ex_radius = m_radius * (1.0f + GrabberOffset);
::glBegin(GL_LINE_STRIP);
for (unsigned int i = 0; i <= AngleResolution; ++i)
@ -550,7 +557,7 @@ void GLGizmoRotate::render_angle() const
void GLGizmoRotate::render_grabber(const BoundingBoxf3& box) const
{
double grabber_radius = (double)(m_radius + GrabberOffset);
double grabber_radius = (double)m_radius * (1.0 + (double)GrabberOffset);
m_grabbers[0].center = Vec3d(::cos(m_angle) * grabber_radius, ::sin(m_angle) * grabber_radius, 0.0);
m_grabbers[0].angles(2) = m_angle;

View file

@ -133,7 +133,6 @@ class GLGizmoRotate : public GLGizmoBase
static const float ScaleStepRad;
static const unsigned int ScaleLongEvery;
static const float ScaleLongTooth;
static const float ScaleShortTooth;
static const unsigned int SnapRegionsCount;
static const float GrabberOffset;
@ -152,6 +151,11 @@ private:
mutable Vec3d m_center;
mutable float m_radius;
mutable float m_snap_coarse_in_radius;
mutable float m_snap_coarse_out_radius;
mutable float m_snap_fine_in_radius;
mutable float m_snap_fine_out_radius;
public:
GLGizmoRotate(GLCanvas3D& parent, Axis axis);