# anticlnAsym2.qry # This is a sample script for drawing the geological line symbol # for an asymmetric anticline (dashed, no arrow stems). Fold symbols # are placed at the center of each line. The steeper limb of the # fold is assumed to be on the left side of the fold line; use the # Spatial Editor to reverse line directions if necessary. # Version March 2008 # Requires TNTmips 2006:72 or later. numeric red, green, blue, scale, dashMap, dashSize, halfDash; numeric widthMap, width, arrowSize, arrowLengthMap; numeric halfSize, wingSize, angle, stemSize, dist; numeric arrowDrawn; # flag to indicate whether arrow symbol has been drawn numeric lineCheck; class RVC_GEOREFERENCE vGeoref; class SR_COORDREFSYS vectCRS; class STRING coordUnit$; ###################### Set Parameters ############################## # red, green, blue variables define the color of the line red = 0; green = 0; blue = 0; # This variable defines the denominator of the intended map scale. # It is used as the basis for defining line width and symbol size # and spacing. # Example: for 1:24,000 map scale, Scale = 24000 scale = 24000; # This variable sets the length of the dashes # DashMap is the desired dash length in mm, assuming vector # coordinates are in meters: dashMap = 2; # This variable controls the width of the lines. # WidthMap is the desired map width in mm, assuming vector # coordinates are in meters. widthMap = 0.75; # This variable controls the size of the arrows # ArrowLengthMap is the desired arrowhead length in mm, assuming vector # coordinates are in meters: arrowLengthMap = 3; # This variable controls the sweep angle of the arrow in degrees angle = 80; # 80 degree angle ####################### Compute Derived Values ######################## # Check if vector has geographic coordinates (units of degrees instead of meters) # and if so automatically adjust scale factor to draw symbols of appropriate size. Vect.GetDefaultGeoref(vGeoref); vectCRS = vGeoref.GetCoordRefSys(); if (vectCRS.IsProjected() <> 1) { if (vectCRS.IsLocal() <> 1) { scale = scale * 0.000009; } } else { # CRS is projected; check coordinate units to adjust scale # get coordinate unit from the first axis of the planar coordinate system coordUnit$ = vectCRS.Coordsys.GetAxis(1).Unit.GetSymbol(); scale = scale * GetUnitConvDist("m", coordUnit$); } # set final dimensions for drawing if (DrawingLegendView == 1) { # set dimensions for LegendView based on sample size dashSize = 0.25 * SampleRect.GetWidth(); width = 0.1 * SampleRect.GetHeight(); arrowSize = 0.4 * SampleRect.GetHeight(); } else { # set dimensions for drawing elements in view scale = scale / 1000; # conversion from meters to millimeters dashSize = dashMap * scale; width = widthMap * scale; arrowSize = arrowLengthMap * scale; } halfDash = dashSize * 0.5; # This variable controls the length of the arrow head wingSize = arrowSize / cosd(angle * 0.5); # get length of line and set check location dashSize less than # the midpoint; to be used to trigger placement of arrow lineCheck = (LineStyleGetDistanceTo(3) * 0.5) - dashSize; ######################### Draw ################################ # Set line color, width. LineStyleSetColor(red,green,blue); LineStyleSetLineWidth(width); # initialize flag indicating if arrow symbol has been drawn yet arrowDrawn = 0; # Draw dashed fold line and arrow symbols LineStyleRollPen(dashSize); # start line with dash while (LineStyleRoll(halfDash) != 1) # while not at end of line roll length of half dash { # draw arrow symbol when position passes middle of line and set # flag to indicate it has been drawn if ( LineStyleGetPosition(1) > lineCheck && arrowDrawn == 0 ) { # Draw dash with anchor point in center LineStyleRollPen(halfDash); LineStyleDropAnchor(1); LineStyleRollPen(halfDash); LineStyleSetLineWidth(0); # set 0 width for drawing arrow heads # Draw arrow heads LineStyleMoveToAnchor(1); LineStyleDrawArrow(90, arrowSize, wingSize, angle, 1); # arrowhead on left LineStyleMoveToAnchor(1); LineStyleDrawArrow(-90, arrowSize, wingSize, angle, 1); # arrowhead on right LineStyleMoveToAnchor(1); LineStyleMoveTo(90, arrowSize); LineStyleDrawArrow(90, arrowSize, wingSize, angle, 1); # draw extra arrowhead on left LineStyleSetLineWidth(width); # reset line width after drawing arrows arrowDrawn = 1; } else LineStyleRollPen(dashSize); }