public void setVFromPointWithSize(Point2D start, double size) {
// TODO attention ne marhce pas avec certains frustum
Polygon p = bottomPolygon;
double startLength = p.getLengthTo(start);
vOffset = startLength;
vScale = size / p.getLength();
}
public void setVFromPointToPoint(Point2D start, Point2D end) {
// TODO attention ne marhce pas avec certains frustum
Polygon p = bottomPolygon;
double startLength = p.getLengthTo(start);
double endLength = p.getLengthTo(end);
double length;
if (endLength > startLength) {
length = endLength - startLength;
} else if (startLength > endLength) {
length = p.getLength() - startLength + endLength;
} else {
length = p.getLength();
}
vOffset = startLength;
vScale = length / p.getLength();
}
public void extrude(double height) {
if (height < top && height > bottom) {
throw new IllegalArgumentException("Specified height is inside mesh.");
}
Polygon polygon;
double base;
double sum;
if (height > top) {
polygon = topPolygon;
base = top;
sum = height;
} else {
polygon = bottomPolygon;
base = height;
sum = bottom;
}
for (Point2D p : polygon.points) {
add6Indices(mesh.vertices.size());
Point2D prev = polygon.points.getPrevious(p);
Point2D next = polygon.points.getNext(p);
Point2D nextNext = polygon.points.getNext(next);
// add 4 vertices
mesh.vertices.add(new Point3D(p, sum, 1));
mesh.vertices.add(new Point3D(next, sum, 1));
mesh.vertices.add(new Point3D(p, base, 1));
mesh.vertices.add(new Point3D(next, base, 1));
// add 4 normals
double wPrevNormal = getSmoothedNormal(prev, p, next, 0);
double wNextNormal = getSmoothedNormal(p, next, nextNext, 1);
mesh.normals.add(new Point3D(Math.cos(wPrevNormal), 0, Math.sin(wPrevNormal)));
mesh.normals.add(new Point3D(Math.cos(wNextNormal), 0, Math.sin(wNextNormal)));
mesh.normals.add(new Point3D(Math.cos(wPrevNormal), 0, Math.sin(wPrevNormal)));
mesh.normals.add(new Point3D(Math.cos(wNextNormal), 0, Math.sin(wNextNormal)));
// add 4 textCoord
double pLength = polygon.getLengthTo(p);
double nextLength = polygon.getLengthTo(next);
// Logutil.logger.info("sum : "+sum+"base : "+base);
mesh.textCoord.add(
new Point2D(
(-uOffset + sum - base) / (sum - base) / uScale,
1 - (pLength - vOffset) / polygon.getLength() / vScale));
mesh.textCoord.add(
new Point2D(
(-uOffset + sum - base) / (sum - base) / uScale,
1 - (nextLength - vOffset) / polygon.getLength() / vScale));
mesh.textCoord.add(
new Point2D(
-uOffset / (sum - base) / uScale,
1 - (pLength - vOffset) / polygon.getLength() / vScale));
mesh.textCoord.add(
new Point2D(
-uOffset / (sum - base) / uScale,
1 - (nextLength - vOffset) / polygon.getLength() / vScale));
}
prepare(polygon, height);
}