home *** CD-ROM | disk | FTP | other *** search
- #import "Curve.h"
- #import "draw.h"
-
- @implementation Curve
-
- - (float)arrowAngle:(int)corner
- /*
- * Since our control points are at a 90 degree angle, we'll draw our arrows
- * at 90 degree angles (however, this method breaks down a bit as the bounds
- * get very skinny--perhaps a better one could be found).
- */
- {
- if (gFlags.downhill) {
- switch (corner) {
- case UPPER_LEFT: return 180.0;
- case LOWER_RIGHT: return - 90.0;
- }
- } else {
- switch (corner) {
- case UPPER_RIGHT: return 0.0;
- case LOWER_LEFT: return -90.0;
- }
- }
- return 0.0;
- }
-
- - drawLine
- /*
- * Overridden from our superclass (Line).
- * This is called from the draw method to actually do the drawing of the line,
- * that way, we can inherit the arrow drawing, etc ...
- */
- {
- if (gFlags.downhill) {
- PSCurve(bounds.origin.x, bounds.origin.y + bounds.size.height,
- bounds.origin.x + bounds.size.width,
- bounds.origin.y + bounds.size.height,
- bounds.origin.x + bounds.size.width,
- bounds.origin.y + bounds.size.height,
- bounds.origin.x + bounds.size.width, bounds.origin.y);
- } else {
- PSCurve(bounds.origin.x, bounds.origin.y,
- bounds.origin.x,
- bounds.origin.y + bounds.size.height,
- bounds.origin.x,
- bounds.origin.y + bounds.size.height,
- bounds.origin.x + bounds.size.width,
- bounds.origin.y + bounds.size.height);
- }
- return self;
- }
-
- - (BOOL)hit:(const NXPoint *)p
- /*
- * Line only gets a hit if the mouse is within some tolerance of the line.
- * Obviously that algorithm doesn't work for a curve. We could come up
- * with the proper algorithm to only hit a curve if it is within a tolerance,
- * but that would be complicated so we take the easy way out and just
- * get a hit if it is anywhere in the bounds. It is unfortunate that we
- * have to copy code from Graphic to accomplish this. Perhaps a better
- * way exists?
- */
- {
- return (!gFlags.locked && gFlags.active && NXMouseInRect(p, &bounds, NO));
- }
-
- @end
-
-