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Commit d0db0dca191c933df781831dcec15e5ab27d73db

Authored by tfmoraes
1 parent 179e4893
Exists in master and in 68 other branches 3d_inter_style, MIPs, beta3, beta4, brush_pix, canvas_reeng, canvas_text, casmoothing_cython, clean, command-line, cython_threshold, debian_cython, editor_improvements, encoding, ff_mask, ff_mask_improv, ffill_gui, ffill_segmentation, fill_holes_auto, fixes_pre_beta5, floodfill, get_pixel, import_mesh, interactor_style, inv3.0.1, invesalius-libift, mactoolbar, mactoolbar_bkp, manual_v3.1, mask_boolean_op, mask_boolean_op_bkp, mask_copy, mask_greatest_component, measure, measure_canvas, measure_improvements, measure_placement_test, measure_spacing, orientation, phoenix, region_growing_confidence, remote, remove_local_wxpython, rmatsuda-fix_ref_MTC, rmatsuda-fix_remove_marker_bug, rmatsuda-trigger_bug_fix, rotvol, segmentation_menu, select_part, smoothing_bin, smoothing_bin_pll, surface_area, threshold_history, user_guide_en, usp-navegador, vti, vtk6, watershed, watershed_improvements, watershed_improvements_bkp, watershed_merge, workdir, wwwlgui, wx2.9_mac, wxgtk3, wxgtk3_b5, wxgtk3_bkp, xmartlabs-command-line

ENH: Improved the function that verifies if the user clicked in the line in the … 

…clut widget raycasting
Showing 1 changed file with 26 additions and 11 deletions   Show diff stats
invesalius/gui/widgets/clut_raycasting.py
  Diff comments   View file @d0db0dc
... ... @@ -111,7 +111,6 @@ class CLUTRaycastingWidget(wx.Panel):
111 111 return
112 112 curve = self._has_clicked_in_selection_curve((x, y))
113 113 if curve is not None:
114   - print "Selecionou a curva", curve
115 114 self.dragged = True
116 115 self.previous_wl = x
117 116 self.curve_dragged = curve
... ... @@ -299,6 +298,23 @@ class CLUTRaycastingWidget(wx.Panel):
299 298 return (i, j)
300 299 return None
301 300  
  301 + def distance_from_point_line(self, p1, p2, pc):
  302 + """
  303 + Calculate the distance from point pc to a line formed by p1 and p2.
  304 + """
  305 + # Create a vector pc-p1 and p2-p1
  306 + A = numpy.array(pc) - numpy.array(p1)
  307 + B = numpy.array(p2) - numpy.array(p1)
  308 + # Calculate the size from those vectors
  309 + len_A = numpy.linalg.norm(A)
  310 + len_B = numpy.linalg.norm(B)
  311 + # calculate the angle (in radians) between those vector
  312 + theta = math.acos(numpy.dot(A, B) / (len_A * len_B))
  313 + # Using the sin from theta, calculate the adjacent leg, which is the
  314 + # distance from the point to the line
  315 + distance = math.sin(theta) * len_A
  316 + return distance
  317 +
302 318 def _has_clicked_in_selection_curve(self, position):
303 319 x, y = position
304 320 for i, curve in enumerate(self.curves):
... ... @@ -306,20 +322,19 @@ class CLUTRaycastingWidget(wx.Panel):
306 322 return i
307 323 return None
308 324  
309   - def _has_clicked_in_line(self, position):
  325 + def _has_clicked_in_line(self, clicked_point):
310 326 """
311 327 Verify if was clicked in a line. If yes, it returns the insertion
312   - position in the point list.
  328 + clicked_point in the point list.
313 329 """
314 330 for n, curve in enumerate(self.curves):
315   - p = bisect.bisect([node.x for node in curve.nodes], position[0])
316   - print p
317   - if p != 0 and p != len(curve.nodes):
318   - x1, y1 = curve.nodes[p-1].x, curve.nodes[p-1].y
319   - x2, y2 = position
320   - x3, y3 = curve.nodes[p].x, curve.nodes[p].y
321   - if int(float(x2 - x1) / (x3 - x2)) - int(float(y2 - y1) / (y3 - y2)) == 0:
322   - return (n, p)
  331 + position = bisect.bisect([node.x for node in curve.nodes],
  332 + clicked_point[0])
  333 + if position != 0 and position != len(curve.nodes):
  334 + p1 = curve.nodes[position-1].x, curve.nodes[position-1].y
  335 + p2 = curve.nodes[position].x, curve.nodes[position].y
  336 + if self.distance_from_point_line(p1, p2, clicked_point) <= 5:
  337 + return (n, position)
323 338 return None
324 339  
325 340 def _calculate_distance(self, p1, p2):
... ...