Update of /cvsroot/bprocessor/gl/src/net/sourceforge/bprocessor/gl/tool
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv655/src/net/sourceforge/bprocessor/gl/tool
Modified Files:
Protractor.java
Log Message:
plane orientation
Index: Protractor.java
===================================================================
RCS file: /cvsroot/bprocessor/gl/src/net/sourceforge/bprocessor/gl/tool/Protractor.java,v
retrieving revision 1.17
retrieving revision 1.18
diff -C2 -d -r1.17 -r1.18
*** Protractor.java 21 Nov 2007 13:50:53 -0000 1.17
--- Protractor.java 21 Nov 2007 15:28:46 -0000 1.18
***************
*** 102,107 ****
Surface surface = View.getLastSurface();
if (surface != null) {
! system = surface.coordinateSystem();
! system = system.plane().coordinateSystem();
} else {
system = Project.getInstance().getActiveCoordinateSystem();
--- 102,106 ----
Surface surface = View.getLastSurface();
if (surface != null) {
! system = systemFor(surface);
} else {
system = Project.getInstance().getActiveCoordinateSystem();
***************
*** 158,161 ****
--- 157,210 ----
}
+ /**
+ * Returns a coordinate system for specified surface where the Z axis
+ * is a normal to the surface and the x-axis points to the right.
+ * Does not work exactly correct yet, but works in cases where the surfaces
+ * are mostly vertical.
+ *
+ * @param surface Surface
+ * @return coordinate system
+ */
+ public CoordinateSystem systemFor(Surface surface) {
+ Vertex n = surface.normal();
+ Vertex origin = surface.getFirstVertex();
+ if (!editor.getView().facingFront(surface)) {
+ n = n.scale(-1);
+ }
+ Plane plane = new Plane(n, origin);
+ int index = plane.largestCoefficient();
+ Vertex i = null;
+ Vertex j = null;
+ Vertex z = null;
+ if (index == Plane.X) {
+ i = new Vertex(0, 1, 0);
+ z = new Vertex(1, 0, 0);
+ }
+ if (index == Plane.Y) {
+ i = new Vertex(-1, 0, 0);
+ z = new Vertex(0, 1, 0);
+ }
+ if (index == Plane.Z) {
+ i = new Vertex(1, 0, 0);
+ z = new Vertex(0, 0, 1);
+ }
+
+ double t = n.dot(i);
+ double sign = 1;
+
+ if (n.dot(z) < 0) {
+ sign = -1;
+ }
+
+ i.setX(i.getX() - n.getX() * t);
+ i.setY(i.getY() - n.getY() * t);
+ i.setZ(i.getZ() - n.getZ() * t);
+ i.scaleInPlace(sign / i.length());
+
+ j = n.cross(i);
+
+ return new CoordinateSystem(i, j, n, origin);
+ }
+
/**
* {@inheritDoc}
***************
*** 168,173 ****
Surface surface = View.getLastSurface();
if (surface != null) {
! system = surface.coordinateSystem();
! system = system.plane().coordinateSystem();
} else {
system = Project.getInstance().getActiveCoordinateSystem();
--- 217,221 ----
Surface surface = View.getLastSurface();
if (surface != null) {
! system = systemFor(surface);
} else {
system = Project.getInstance().getActiveCoordinateSystem();
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