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

Example 41 with Point3f

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

the class Mesh method getNormals.

// Compute face normals from full vertices list
private void getNormals() {
    facesNormals = new ArrayList<Point3f>();
    Point3f v1, v2, normal;
    float n1, n2, n3, norm;
    for (int i = 0; i < vertices.size(); i += 3) {
        // 2 vectors
        v1 = new Point3f(vertices.get(i + 1).x - vertices.get(i).x, vertices.get(i + 1).y - vertices.get(i).y, vertices.get(i + 1).z - vertices.get(i).z);
        v2 = new Point3f(vertices.get(i + 2).x - vertices.get(i + 1).x, vertices.get(i + 2).y - vertices.get(i + 1).y, vertices.get(i + 2).z - vertices.get(i + 1).z);
        // normal
        n1 = (v1.y * v2.z) - (v1.z * v2.y);
        n2 = (v1.z * v2.x) - (v1.x * v2.z);
        n3 = (v1.x * v2.y) - (v1.y * v2.x);
        // normalization
        norm = (float) Math.sqrt((n1 * n1) + (n2 * n2) + (n3 * n3));
        n1 = n1 / norm;
        n2 = n2 / norm;
        n3 = n3 / norm;
        normal = new Point3f(n1, n2, n3);
        // System.out.println(normal.toString());
        facesNormals.add(normal);
    }
// System.out.println("triangles.size: " + facesNormals.size());
}

Example 42 with Point3f

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

the class Mesh method computeMedian.

public Point3f computeMedian(List<Point3f> uV) {
    int n = uV.size();
    List<Float> x = new ArrayList<Float>();
    List<Float> y = new ArrayList<Float>();
    List<Float> z = new ArrayList<Float>();
    for (int i = 0; i < n; i++) {
        x.add(uV.get(i).x);
        y.add(uV.get(i).y);
        z.add(uV.get(i).z);
    }
    Collections.sort(x);
    Collections.sort(y);
    Collections.sort(z);
    int n2 = (int) Math.floor(n / 2);
    Point3f center = new Point3f(x.get(n2), y.get(n2), z.get(n2));
    return center;
}

Example 43 with Point3f

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

the class Mesh method triangleBBox.

public ArrayList<Point3f> triangleBBox(Triangle t) {
    ArrayList<Point3f> bBox = new ArrayList<Point3f>(2);
    ArrayList<Integer> vts = t.getVertices();
    float xm, ym, zm, xM, yM, zM;
    xm = xM = vertexList.get(vts.get(0)).getPosition().x;
    ym = yM = vertexList.get(vts.get(0)).getPosition().y;
    zm = zM = vertexList.get(vts.get(0)).getPosition().z;
    Point3f p;
    for (int i = 1; i < vts.size(); i++) {
        p = vertexList.get(vts.get(i)).getPosition();
        if (xm > p.x) {
            xm = p.x;
        }
        if (ym > p.y) {
            ym = p.y;
        }
        if (zm > p.z) {
            zm = p.z;
        }
        if (xM < p.x) {
            xM = p.x;
        }
        if (yM < p.y) {
            yM = p.y;
        }
        if (zM < p.z) {
            zM = p.z;
        }
    }
    p = new Point3f(xm - 0.1f, ym - 0.1f, zm - 0.1f);
    bBox.add(p);
    p = new Point3f(xM + 0.1f, yM + 0.1f, zM + 0.1f);
    bBox.add(p);
    return bBox;
}

Example 44 with Point3f

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

the class Mesh method computeBBox.

public ArrayList<Point3f> computeBBox(ArrayList<Point3f> uV) {
    ArrayList<Point3f> bBox = new ArrayList<Point3f>(2);
    float xm, ym, zm, xM, yM, zM;
    xm = xM = uV.get(0).x;
    ym = yM = uV.get(0).y;
    zm = zM = uV.get(0).z;
    Point3f p;
    for (int i = 1; i < uV.size(); i++) {
        p = uV.get(i);
        if (xm > p.x) {
            xm = p.x;
        }
        if (ym > p.y) {
            ym = p.y;
        }
        if (zm > p.z) {
            zm = p.z;
        }
        if (xM < p.x) {
            xM = p.x;
        }
        if (yM < p.y) {
            yM = p.y;
        }
        if (zM < p.z) {
            zM = p.z;
        }
    }
    p = new Point3f(xm - 1.0f, ym - 1.0f, zm - 1.0f);
    bBox.add(p);
    p = new Point3f(xM + 1.0f, yM + 1.0f, zM + 1.0f);
    bBox.add(p);
    return bBox;
}

Example 45 with Point3f

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

the class Mesh method computeVerticesNormals.

// Compute vertices normals by interpolation of faces normals
// Need
public void computeVerticesNormals(List<Integer> indices) {
    getNormals();
    verticesNormals = new ArrayList<Point3f>();
    for (int i = 0; i < unique_vertices.size(); i++) {
        float x, y, z;
        int triangleIndex;
        int cpt = 0;
        Point3f P;
        x = y = z = 0.f;
        for (int j = 0; j < indices.size(); j++) {
            if (indices.get(j) == i) {
                triangleIndex = (j) / 3;
                if (!Float.isNaN(facesNormals.get(triangleIndex).x)) {
                    x += facesNormals.get(triangleIndex).x;
                    y += facesNormals.get(triangleIndex).y;
                    z += facesNormals.get(triangleIndex).z;
                    // System.out.println("tI: "+triangleIndex);
                    cpt++;
                }
            }
        }
        P = new Point3f(x / (float) cpt, y / (float) cpt, z / (float) cpt);
        verticesNormals.add(P);
    }
}