onscreen ndof rotation guide (center + axis)
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@ -690,10 +690,13 @@ static void draw_rotation_guide(RegionView3D *rv3d)
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glShadeModel(GL_SMOOTH);
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glPointSize(5);
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glEnable(GL_POINT_SMOOTH);
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glDepthMask(0); // don't overwrite zbuf
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if (rv3d->rot_angle != 0.f) {
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// -- draw rotation axis --
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float scaled_axis[3];
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mul_v3_v3fl(scaled_axis, rv3d->rot_axis, 3.f);
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const float scale = rv3d->dist;
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mul_v3_v3fl(scaled_axis, rv3d->rot_axis, scale);
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glBegin(GL_LINE_STRIP);
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color[3] = 0; // more transparent toward the ends
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@ -701,7 +704,10 @@ static void draw_rotation_guide(RegionView3D *rv3d)
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add_v3_v3v3(end, o, scaled_axis);
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glVertex3fv(end);
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color[3] = 0.2f + rv3d->rot_angle; // more opaque toward the center
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// color[3] = 0.2f + fabsf(rv3d->rot_angle); // modulate opacity with angle
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// ^^ neat idea, but angle is frame-rate dependent, so it's usually close to 0.2
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color[3] = 0.5f; // more opaque toward the center
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glColor4fv(color);
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glVertex3fv(o);
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@ -716,6 +722,7 @@ static void draw_rotation_guide(RegionView3D *rv3d)
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else
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color[3] = 0.5; // see-through dot
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// -- draw rotation center --
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glColor4fv(color);
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glBegin(GL_POINTS);
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glVertex3fv(o);
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@ -728,6 +735,7 @@ static void draw_rotation_guide(RegionView3D *rv3d)
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glDisable(GL_BLEND);
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glDisable(GL_POINT_SMOOTH);
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glDepthMask(1);
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}
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static void draw_view_icon(RegionView3D *rv3d)
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@ -2672,10 +2680,10 @@ void view3d_main_area_draw(const bContext *C, ARegion *ar)
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BDR_drawSketch(C);
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}
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#if 0 // not yet...
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//#if 0 // not yet...
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if (U.ndof_flag & NDOF_SHOW_GUIDE)
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draw_rotation_guide(rv3d);
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#endif
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//#endif
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ED_region_pixelspace(ar);
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@ -1053,13 +1053,13 @@ static int ndof_orbit_invoke(bContext *C, wmOperator *op, wmEvent *event)
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if (invert)
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angle = -angle;
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// transform rotation axis from view to world coordinates
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mul_qt_v3(view_inv, axis);
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// update the onscreen doo-dad
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rv3d->rot_angle = angle;
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copy_v3_v3(rv3d->rot_axis, axis);
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// transform rotation axis from view to world coordinates
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mul_qt_v3(view_inv, axis);
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axis_angle_to_quat(rot, axis, angle);
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#endif // --------------------------------------------
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// apply rotation
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