[GRASS-SVN] r31996 - in grass/trunk/gui/wxpython: gui_modules vdigit
svn_grass at osgeo.org
svn_grass at osgeo.org
Sat Jul 5 00:37:34 EDT 2008
Author: martinl
Date: 2008-07-05 00:37:34 -0400 (Sat, 05 Jul 2008)
New Revision: 31996
Modified:
grass/trunk/gui/wxpython/gui_modules/preferences.py
grass/trunk/gui/wxpython/gui_modules/vdigit.py
grass/trunk/gui/wxpython/vdigit/digit.h
grass/trunk/gui/wxpython/vdigit/driver.cpp
grass/trunk/gui/wxpython/vdigit/driver.h
Log:
wxGUI/vdigit: visualize line directions implemented, trac #209
Modified: grass/trunk/gui/wxpython/gui_modules/preferences.py
===================================================================
--- grass/trunk/gui/wxpython/gui_modules/preferences.py 2008-07-04 20:56:45 UTC (rev 31995)
+++ grass/trunk/gui/wxpython/gui_modules/preferences.py 2008-07-05 04:37:34 UTC (rev 31996)
@@ -125,6 +125,7 @@
'symbolNodeOne' : { 'enabled' : True, 'color' : (255, 0, 0, 255) }, # red
'symbolNodeTwo' : { 'enabled' : True, 'color' : (0, 86, 45, 255) }, # dark green
'symbolVertex' : { 'enabled' : False, 'color' : (255, 20, 147, 255) }, # deep pink
+ 'symbolDirection' : { 'enabled' : False, 'color' : (255, 0, 0, 255) }, # red
# display
'lineWidth' : { 'value' : 2, 'units' : 'screen pixels' },
# snapping
@@ -327,7 +328,7 @@
if self.filePath:
self.__ReadFile(self.filePath, settings)
-
+
def __ReadFile(self, filename, settings=None):
"""Read settings from file to dict"""
if settings is None:
Modified: grass/trunk/gui/wxpython/gui_modules/vdigit.py
===================================================================
--- grass/trunk/gui/wxpython/gui_modules/vdigit.py 2008-07-04 20:56:45 UTC (rev 31995)
+++ grass/trunk/gui/wxpython/gui_modules/vdigit.py 2008-07-05 04:37:34 UTC (rev 31996)
@@ -1563,6 +1563,11 @@
UserSettings.Get(group='vdigit', key='symbolVertex', subkey='color')[1],
UserSettings.Get(group='vdigit', key='symbolVertex', subkey='color')[2],
255).GetRGB(),
+ UserSettings.Get(group='vdigit', key='symbolDirection', subkey='enabled'),
+ wx.Color(UserSettings.Get(group='vdigit', key='symbolDirection', subkey='color')[0],
+ UserSettings.Get(group='vdigit', key='symbolDirection', subkey='color')[1],
+ UserSettings.Get(group='vdigit', key='symbolDirection', subkey='color')[2],
+ 255).GetRGB(),
UserSettings.Get(group='vdigit', key='lineWidth', subkey='value'))
class VDigitSettingsDialog(wx.Dialog):
@@ -1969,7 +1974,8 @@
(_("Centroid (duplicate in area)"), "symbolCentroidDup"),
(_("Node (one line)"), "symbolNodeOne"),
(_("Node (two lines)"), "symbolNodeTwo"),
- (_("Vertex"), "symbolVertex"))
+ (_("Vertex"), "symbolVertex"),
+ (_("Direction"), "symbolDirection"),)
def OnChangeCategoryMode(self, event):
"""Change category mode"""
Modified: grass/trunk/gui/wxpython/vdigit/digit.h
===================================================================
--- grass/trunk/gui/wxpython/vdigit/digit.h 2008-07-04 20:56:45 UTC (rev 31995)
+++ grass/trunk/gui/wxpython/vdigit/digit.h 2008-07-05 04:37:34 UTC (rev 31996)
@@ -1,5 +1,5 @@
-#ifndef __DIGIT_H__
-#define __DIGIT_H__
+#ifndef WXVDIGIT_DIGIT_H
+#define WXVDIGIT_DIGIT_H
#define GSQL_MAX 4000
@@ -83,5 +83,5 @@
int GetUndoLevel();
};
-#endif /* __DIGIT_H__ */
+#endif /* WXVDIGIT_DIGIT_H */
Modified: grass/trunk/gui/wxpython/vdigit/driver.cpp
===================================================================
--- grass/trunk/gui/wxpython/vdigit/driver.cpp 2008-07-04 20:56:45 UTC (rev 31995)
+++ grass/trunk/gui/wxpython/vdigit/driver.cpp 2008-07-05 04:37:34 UTC (rev 31996)
@@ -6,16 +6,18 @@
This driver is designed for wxPython GRASS GUI (digitization tool).
Draw vector map layer to PseudoDC.
+ (C) by the GRASS Development Team
This program is free software under the GNU General Public
License (>=v2). Read the file COPYING that comes with GRASS
for details.
- \author (C) by the GRASS Development Team
- Martin Landa <landa.martin gmail.com>
+ \author Martin Landa <landa.martin gmail.com>
\date 2007-2008
*/
+#include <cmath>
+
#include "driver.h"
/**
@@ -274,12 +276,18 @@
}
}
else {
- wxPoint points[pointsScreen->GetCount()];
+ wxPoint wxPoints[pointsScreen->GetCount()];
for (size_t i = 0; i < pointsScreen->GetCount(); i++) {
wxPoint *point_beg = (wxPoint *) pointsScreen->Item(i)->GetData();
- points[i] = *point_beg;
+ wxPoints[i] = *point_beg;
}
- dc->DrawLines(pointsScreen->GetCount(), points);
+ dc->DrawLines(pointsScreen->GetCount(), wxPoints);
+
+ if (!IsSelected(line) && settings.direction.enabled) {
+ DrawDirectionArrow();
+ // restore pen
+ dc->SetPen(*pen);
+ }
}
}
}
@@ -572,15 +580,33 @@
*x = int((east - w) / region.map_res);
*y = int((n - north) / region.map_res);
*/
- *x = (east - w) / region.map_res;
- *y = (n - north) / region.map_res;
+ if (x)
+ *x = (east - w) / region.map_res;
+ if (y)
+ *y = (n - north) / region.map_res;
+ if (z)
+ *z = 0.;
- *z = 0;
-
return;
}
/**
+ \brief Calculate distance in pixels
+
+ \todo LL projection
+
+ \param dist real distance
+*/
+double DisplayDriver::DistanceInPixels(double dist)
+{
+ double x;
+
+ Cell2Pixel(region.map_west + dist, region.map_north, 0.0, &x, NULL, NULL);
+
+ return std::sqrt(x * x);
+}
+
+/**
\brief Set geographical region
Region must be upgraded because of Cell2Pixel().
@@ -661,6 +687,7 @@
bool eNodeOne, unsigned long cNodeOne,
bool eNodeTwo, unsigned long cNodeTwo,
bool eVertex, unsigned long cVertex,
+ bool eDirection, unsigned long cDirection,
int lineWidth)
{
settings.highlight.Set(highlight);
@@ -697,6 +724,9 @@
settings.vertex.enabled = eVertex;
settings.vertex.color.Set(cVertex);
+ settings.direction.enabled = eDirection;
+ settings.direction.color.Set(cDirection);
+
settings.lineWidth = lineWidth;
}
@@ -1233,3 +1263,109 @@
return;
}
+
+/**
+ \brief Draw line direction arrow
+
+ \return number of drawn arrows
+*/
+int DisplayDriver::DrawDirectionArrow()
+{
+ int narrows;
+ int size; // arrow length in pixels
+ int limit; // segment length limit for drawing symbol (in pixels)
+ double dist, angle, pos;
+ double e, n, d, x0, y0, z0, x1, y1, z1;
+ struct line_pnts *points_seg;
+ wxPen *pen_arrow;
+
+ narrows = 0;
+ size = 5;
+ limit = 5; // 5px for line segment
+
+ points_seg = Vect_new_line_struct();
+ pen_arrow = new wxPen(settings.direction.color, settings.lineWidth, wxSOLID);
+
+ dc->SetPen(*pen_arrow);
+
+ dist = Vect_line_length(points);
+
+ if (DistanceInPixels(dist) >= limit) {
+ while (1) {
+ pos = (narrows + 1) * 8 * limit * region.map_res;
+
+ if (Vect_point_on_line(points, pos,
+ &e, &n, &d, NULL, NULL) < 1) {
+ break;
+ }
+
+ Cell2Pixel(e, n, d, &x0, &y0, &z0);
+
+ if (Vect_point_on_line(points, pos - 3 * size * region.map_res,
+ &e, &n, &d, &angle, NULL) < 1) {
+ break;
+ }
+
+ Cell2Pixel(e, n, d, &x1, &y1, &z1);
+
+ DrawArrow(x0, y0, x1, y1, angle, size);
+
+ if(narrows > 1e2) // low resolution, break
+ break;
+
+ narrows++;
+ }
+
+ // draw at least one arrow in the middle of line
+ if (narrows < 1) {
+ dist /= 2.;
+ if (Vect_point_on_line(points, dist,
+ &e, &n, &d, NULL, NULL) > 0) {
+
+ Cell2Pixel(e, n, d, &x0, &y0, &z0);
+
+ if (Vect_point_on_line(points, dist - 3 * size * region.map_res,
+ &e, &n, &d, &angle, NULL) > 0) {
+
+ Cell2Pixel(e, n, d, &x1, &y1, &z1);
+
+ DrawArrow(x0, y0, x1, y1, angle, size);
+ }
+ }
+ }
+ }
+
+ Vect_destroy_line_struct(points_seg);
+
+ return narrows;
+}
+
+/**
+ \brief Draw arrow symbol on line
+
+ \param x0,y0 arrow origin
+ \param x1,x1 arrow ending point (on line)
+ \param angle point ending point angle
+ \param size arrow size
+
+ \return 1
+*/
+int DisplayDriver::DrawArrow(double x0, double y0,
+ double x1, double y1, double angle,
+ int size)
+{
+ double x, y;
+ double angle_symb;
+
+ angle_symb = angle - M_PI / 2.;
+ x = x1 + size * std::cos(angle_symb);
+ y = y1 - size * std::sin(angle_symb);
+ dc->DrawLine((wxCoord) x, (wxCoord) y, (wxCoord) x0, (wxCoord) y0);
+
+ angle_symb = M_PI / 2. + angle;
+ x = x1 + size * std::cos(angle_symb);
+ y = y1 - size * std::sin(angle_symb);
+ dc->DrawLine((wxCoord) x0, (wxCoord) y0, (wxCoord) x, (wxCoord) y);
+
+ return 1;
+}
Modified: grass/trunk/gui/wxpython/vdigit/driver.h
===================================================================
--- grass/trunk/gui/wxpython/vdigit/driver.h 2008-07-04 20:56:45 UTC (rev 31995)
+++ grass/trunk/gui/wxpython/vdigit/driver.h 2008-07-05 04:37:34 UTC (rev 31996)
@@ -1,5 +1,5 @@
-#ifndef __DRIVER_H__
-#define __DRIVER_H__
+#ifndef WXVDIGIT_DRIVER_H
+#define WXVDIGIT_DRIVER_H
#include <iostream> // debug
#include <vector>
@@ -107,6 +107,8 @@
symbol vertex;
+ symbol direction;
+
int lineWidth; // screen units
} settings;
@@ -132,12 +134,16 @@
void Cell2Pixel (double, double, double,
double *, double *, double *);
-
+ double DistanceInPixels(double);
+
int DrawCross(int, const wxPoint *, int size=5);
+ int DrawArrow(double, double, double, double, double,
+ int);
int DrawLine(int);
int DrawLineVerteces(int);
int DrawLineNodes(int);
+ int DrawDirectionArrow();
/* debug */
void PrintIds();
@@ -200,9 +206,10 @@
bool, unsigned long,
bool, unsigned long,
bool, unsigned long,
+ bool, unsigned long,
int);
};
int print_error(const char *, int);
-#endif /* __DRIVER_H__ */
+#endif /* WXVDIGIT_DRIVER_H */
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