Axes rendering

src/slic3r/GUI/GLCanvas3D.cpp

@@ -617,42 +617,71 @@ bool GLCanvas3D::Bed::_are_equal(const Pointfs& bed_1, const Pointfs& bed_2)
     return true;
 }
 
+const double GLCanvas3D::Axes::Radius = 0.5;
+const double GLCanvas3D::Axes::ArrowBaseRadius = 2.5 * GLCanvas3D::Axes::Radius;
+const double GLCanvas3D::Axes::ArrowLength = 5.0;
+
 GLCanvas3D::Axes::Axes()
     : origin(Vec3d::Zero())
-    , length(0.0f)
+    , length(Vec3d::Zero())
 {
+    m_quadric = ::gluNewQuadric();
+    if (m_quadric != nullptr)
+        ::gluQuadricDrawStyle(m_quadric, GLU_FILL);
 }
 
-void GLCanvas3D::Axes::render(bool depth_test) const
+GLCanvas3D::Axes::~Axes()
 {
-    if (depth_test)
-        ::glEnable(GL_DEPTH_TEST);
-    else
-        ::glDisable(GL_DEPTH_TEST);
+    if (m_quadric != nullptr)
+        ::gluDeleteQuadric(m_quadric);
+}
 
-    ::glLineWidth(2.0f);
-    ::glBegin(GL_LINES);
-    // draw line for x axis
+void GLCanvas3D::Axes::render() const
+{
+    if (m_quadric == nullptr)
+        return;
+
+    ::glEnable(GL_DEPTH_TEST);
+    ::glEnable(GL_LIGHTING);
+
+    // x axis
     ::glColor3f(1.0f, 0.0f, 0.0f);
-    ::glVertex3dv(origin.data());
-    ::glVertex3f((GLfloat)origin(0) + length, (GLfloat)origin(1), (GLfloat)origin(2));
-    // draw line for y axis
-    ::glColor3f(0.0f, 1.0f, 0.0f);
-    ::glVertex3dv(origin.data());
-    ::glVertex3f((GLfloat)origin(0), (GLfloat)origin(1) + length, (GLfloat)origin(2));
-    ::glEnd();
-    // draw line for Z axis
-    // (re-enable depth test so that axis is correctly shown when objects are behind it)
-    if (!depth_test)
-        ::glEnable(GL_DEPTH_TEST);
+    ::glPushMatrix();
+    ::glTranslated(origin(0), origin(1), origin(2));
+    ::glRotated(90.0, 0.0, 1.0, 0.0);
+    render_axis(length(0));
+    ::glPopMatrix();
 
-    ::glBegin(GL_LINES);
+    // y axis
+    ::glColor3f(0.0f, 1.0f, 0.0f);
+    ::glPushMatrix();
+    ::glTranslated(origin(0), origin(1), origin(2));
+    ::glRotated(-90.0, 1.0, 0.0, 0.0);
+    render_axis(length(1));
+    ::glPopMatrix();
+
+    // z axis
     ::glColor3f(0.0f, 0.0f, 1.0f);
-    ::glVertex3dv(origin.data());
-    ::glVertex3f((GLfloat)origin(0), (GLfloat)origin(1), (GLfloat)origin(2) + length);
-    ::glEnd();
+    ::glPushMatrix();
+    ::glTranslated(origin(0), origin(1), origin(2));
+    render_axis(length(2));
+    ::glPopMatrix();
+
+    ::glDisable(GL_LIGHTING);
 }
 
+void GLCanvas3D::Axes::render_axis(double length) const
+{
+    ::gluQuadricOrientation(m_quadric, GLU_OUTSIDE);
+    ::gluCylinder(m_quadric, Radius, Radius, length, 32, 1);
+    ::gluQuadricOrientation(m_quadric, GLU_INSIDE);
+    ::gluDisk(m_quadric, 0.0, Radius, 32, 1);
+    ::glTranslated(0.0, 0.0, length);
+    ::gluQuadricOrientation(m_quadric, GLU_OUTSIDE);
+    ::gluCylinder(m_quadric, ArrowBaseRadius, 0.0, ArrowLength, 32, 1);
+    ::gluQuadricOrientation(m_quadric, GLU_INSIDE);
+    ::gluDisk(m_quadric, 0.0, ArrowBaseRadius, 32, 1);
+}
 
 GLCanvas3D::Shader::Shader()
     : m_shader(nullptr)
@@ -3781,7 +3810,7 @@ void GLCanvas3D::set_bed_shape(const Pointfs& shape)
 
     // Set the origin and size for painting of the coordinate system axes.
     m_axes.origin = Vec3d(0.0, 0.0, (double)GROUND_Z);
-    set_axes_length(0.3f * (float)m_bed.get_bounding_box().max_size());
+    set_bed_axes_length(0.1 * m_bed.get_bounding_box().max_size());
 
     if (new_shape)
         zoom_to_bed();
@@ -3789,9 +3818,9 @@ void GLCanvas3D::set_bed_shape(const Pointfs& shape)
     m_dirty = true;
 }
 
-void GLCanvas3D::set_axes_length(float length)
+void GLCanvas3D::set_bed_axes_length(double length)
 {
-    m_axes.length = length;
+    m_axes.length = length * Vec3d::Ones();
 }
 
 void GLCanvas3D::set_color_by(const std::string& value)
@@ -4051,21 +4080,16 @@ void GLCanvas3D::render()
     _render_background();
 
     if (is_custom_bed) // untextured bed needs to be rendered before objects
-    {
         _render_bed(theta);
-        // disable depth testing so that axes are not covered by ground
-        _render_axes(false);
-    }
 
     _render_objects();
     _render_sla_slices();
     _render_selection();
 
+    _render_axes();
+
     if (!is_custom_bed) // textured bed needs to be rendered after objects
-    {
-        _render_axes(true);
         _render_bed(theta);
-    }
 
     // we need to set the mouse's scene position here because the depth buffer
     // could be invalidated by the following gizmo render methods
@@ -6019,9 +6043,9 @@ void GLCanvas3D::_render_bed(float theta) const
     m_bed.render(theta);
 }
 
-void GLCanvas3D::_render_axes(bool depth_test) const
+void GLCanvas3D::_render_axes() const
 {
-    m_axes.render(depth_test);
+    m_axes.render();
 }
 
 void GLCanvas3D::_render_objects() const

src/slic3r/GUI/GLCanvas3D.hpp

@@ -20,6 +20,8 @@ class wxTimerEvent;
 class wxPaintEvent;
 class wxGLCanvas;
 
+class GLUquadric;
+typedef class GLUquadric GLUquadricObj;
 
 namespace Slic3r {
 
@@ -231,12 +233,20 @@ class GLCanvas3D
 
     struct Axes
     {
+        static const double Radius;
+        static const double ArrowBaseRadius;
+        static const double ArrowLength;
         Vec3d origin;
-        float length;
+        Vec3d length;
+        GLUquadricObj* m_quadric;
 
         Axes();
+        ~Axes();
 
-        void render(bool depth_test) const;
+        void render() const;
+
+    private:
+        void render_axis(double length) const;
     };
 
     class Shader
@@ -870,8 +880,7 @@ public:
     // fills the m_bed.m_grid_lines and sets m_bed.m_origin.
     // Sets m_bed.m_polygon to limit the object placement.
     void set_bed_shape(const Pointfs& shape);
-
-    void set_axes_length(float length);
+    void set_bed_axes_length(double length);
 
     void set_clipping_plane(unsigned int id, const ClippingPlane& plane)
     {
@@ -1011,7 +1020,7 @@ private:
     void _picking_pass() const;
     void _render_background() const;
     void _render_bed(float theta) const;
-    void _render_axes(bool depth_test) const;
+    void _render_axes() const;
     void _render_objects() const;
     void _render_selection() const;
     void _render_warning_texture() const;