Examples with Point3f org.scijava.vecmath.Point3f used on opensource projects

Example 1 with Point3f

use of org.scijava.vecmath.Point3f in project mcib3d-core by mcib3d.

the class Mesh method normalization.

public Point3f normalization(Point3f v) {
    Point3f nV;
    float norme = (float) Math.sqrt((v.x * v.x) + (v.y * v.y) + (v.z * v.z));
    nV = new Point3f(v.x / norme, v.y / norme, v.z / norme);
    return nV;
}

Example 2 with Point3f

use of org.scijava.vecmath.Point3f in project mcib3d-core by mcib3d.

the class Mesh method invertNormals.

// dans mesh.java
public ArrayList<Point3f> invertNormals(ArrayList<Point3f> v) {
    ArrayList<Point3f> v2 = new ArrayList<Point3f>();
    for (int i = 0; i < v.size(); i += 3) {
        v2.add(new Point3f(v.get(i)));
        v2.add(new Point3f(v.get(i + 2)));
        v2.add(new Point3f(v.get(i + 1)));
    }
    return v2;
}

Example 3 with Point3f

use of org.scijava.vecmath.Point3f in project mcib3d-core by mcib3d.

the class Mesh method intersectTriangle.

public boolean intersectTriangle(int ti, Point3f dir, Point3f origin) {
    // Calcul des vecteurs u et v qui engendrent le plan du triangle
    Point3f A, B, C, u, v;
    Triangle t = triangles.get(ti);
    A = vertexList.get(t.getVertices().get(0)).getPosition();
    B = vertexList.get(t.getVertices().get(1)).getPosition();
    C = vertexList.get(t.getVertices().get(2)).getPosition();
    u = new Point3f(B.x - A.x, B.y - A.y, B.z - A.z);
    v = new Point3f(C.x - A.x, C.y - A.y, C.z - A.z);
    Point3f n = crossProduct(u, v);
    Point3f intersectionPoint;
    boolean inter = false;
    // Calcul de la normale du triangle t de maillage de l'objet k
    float prodNormDir = dotProduct(n, dir);
    // Si le plan du triangle n est pas parallele au rayon, donc visible depuis la camera:
    if (// cos inferieur a 1 => la normal et la direction forment un angle inferieur à 90 degres
    (prodNormDir) < 0.0f) {
        // Calcul de w, vecteur du point d'origine du rayon au point A
        Point3f w = new Point3f(origin.x - A.x, origin.y - A.y, origin.z - A.z);
        // Point3f w = new Point3f(A.x - origin.x,A.y - origin.y,A.z - origin.z);
        // Les coordonées baricentriques du point d'intersection I sont donc, par rapport aux vecteurs u et v qui engendrent le triangle:
        float Ix = dotProduct(crossProduct(w, v), dir) / prodNormDir;
        float Iy = dotProduct(crossProduct(u, w), dir) / prodNormDir;
        // distance du triangle a l origine.
        float Ir = -dotProduct(n, w) / prodNormDir;
        // Test: Si le rayon traverse le triangle: la somme des coordonnees suivant u et v ne doivent pas depaser 1, et les deux doivent etre positifs (puisque dans la direction de u et v, "vers" le triangle)
        if ((Ix + Iy <= 1) && ((Ix >= 0) && (Iy >= 0)) && Ir >= 0) {
            // baricentriques = Vec3Df(Ix, Iy, Iz);
            intersectionPoint = new Point3f(A.x + (u.x * Ix) + (v.x * Iy), A.y + (u.y * Ix) + (v.y * Iy), A.z + (u.z * Ix) + (v.z * Iy));
            if (distance(intersectionPoint, origin) <= 1) {
                inter = true;
            }
        }
    }
    return inter;
}

Example 4 with Point3f

use of org.scijava.vecmath.Point3f in project mcib3d-core by mcib3d.

the class Object3DSurface method createRoi.

@Override
@Deprecated
public Roi createRoi(int z) {
    // FIXME coordinates may not be ordered
    float[] xcoor = new float[faces.size()];
    float[] ycoor = new float[faces.size()];
    int i = 0;
    Point3f vox;
    for (Point3f vertice : vertices) {
        vox = vertice;
        if (Math.abs(z - vox.z) < 0.5) {
            xcoor[i] = vox.x;
            ycoor[i] = vox.y;
        }
    }
    return new PolygonRoi(xcoor, ycoor, xcoor.length, Roi.POINT);
}

Example 5 with Point3f

use of org.scijava.vecmath.Point3f in project mcib3d-core by mcib3d.

the class Object3DSurface method reCalibratePoints.

public void reCalibratePoints() {
    for (Point3f P : faces) {
        P.set(P.x * (float) resXY, P.y * (float) resXY, P.z * (float) resZ);
    }
    for (Point3f P : vertices) {
        P.set(P.x * (float) resXY, P.y * (float) resXY, P.z * (float) resZ);
    }
    this.computeCenter();
    this.computeBounding();
}