Ejemplos de _nnpi_calculate_weights en C++ (Cpp)

Ejemplo n.º 1

Archivo: nnpi.c Proyecto: Voladorzx/matlab-interpolation-toolkit

void nnpi_calculate_weights(nnpi* nn, point* p)
{
    point pp;
    int nvertices = 0;
    int* vertices = NULL;
    double* weights = NULL;
    int i;

    nnpi_reset(nn);

    if (_nnpi_calculate_weights(nn, p)) {
        nnpi_normalize_weights(nn);
        return;
    }

    nnpi_reset(nn);

    pp.x = p->x + nn->dx;
    pp.y = p->y + nn->dy;

    /*
     * If the triangles are extremely thin, then making a small step in
     * perpendicular direction may turn out between another pair of data
     * points. A very rare event. Take care of this.
     */
    while (!_nnpi_calculate_weights(nn, &pp)) {
        pp.x = p->x + nn->dx * RANDOM;
        pp.y = p->y + nn->dy * RANDOM;
    }
    nnpi_normalize_weights(nn);

    nvertices = nn->nvertices;
    if (nvertices > 0) {
        vertices = malloc(nvertices * sizeof(int));
        memcpy(vertices, nn->vertices, nvertices * sizeof(int));
        weights = malloc(nvertices * sizeof(double));
        memcpy(weights, nn->weights, nvertices * sizeof(double));
    }

    nnpi_reset(nn);

    pp.x = p->x - nn->dx;
    pp.y = p->y - nn->dy;

    while (!_nnpi_calculate_weights(nn, &pp)) {
        pp.x = p->x - nn->dx * RANDOM;
        pp.y = p->y - nn->dy * RANDOM;
    }
    nnpi_normalize_weights(nn);

    for (i = 0; i < nn->nvertices; ++i)
        nn->weights[i] /= 2.0;

    for (i = 0; i < nvertices; ++i)
        nnpi_add_weight(nn, vertices[i], weights[i] / 2.0);

    if (nvertices > 0) {
        free(vertices);
        free(weights);
    }
}

Ejemplo n.º 2

Archivo: nnpi.c Proyecto: epicsdeb/sdds

void nnpi_calculate_weights(nnpi* nn, point* p)
{
    point pp;
    int nvertices = 0;
    int* vertices = NULL;
    double* weights = NULL;
    int i;

    nnpi_reset(nn);

    if (_nnpi_calculate_weights(nn, p)) {
        nnpi_normalize_weights(nn);
        return;
    }

    nnpi_reset(nn);

    nn->dx = (nn->d->xmax - nn->d->xmin) * EPS_SHIFT;
    nn->dy = (nn->d->ymax - nn->d->ymin) * EPS_SHIFT;

    pp.x = p->x + nn->dx;
    pp.y = p->y + nn->dy;

    while (!_nnpi_calculate_weights(nn, &pp)) {
        nnpi_reset(nn);
        pp.x = p->x + nn->dx * RANDOM;
        pp.y = p->y + nn->dy * RANDOM;
    }
    nnpi_normalize_weights(nn);

    nvertices = nn->nvertices;
    if (nvertices > 0) {
        vertices = malloc(nvertices * sizeof(int));
        memcpy(vertices, nn->vertices, nvertices * sizeof(int));
        weights = malloc(nvertices * sizeof(double));
        memcpy(weights, nn->weights, nvertices * sizeof(double));
    }

    nnpi_reset(nn);

    pp.x = 2.0 * p->x - pp.x;
    pp.y = 2.0 * p->y - pp.y;

    while (!_nnpi_calculate_weights(nn, &pp) || nn->nvertices == 0) {
        nnpi_reset(nn);
        pp.x = p->x + nn->dx * RANDOM;
        pp.y = p->y + nn->dy * RANDOM;
    }
    nnpi_normalize_weights(nn);

    if (nvertices > 0)
        for (i = 0; i < nn->nvertices; ++i)
            nn->weights[i] /= 2.0;

    for (i = 0; i < nvertices; ++i)
        nnpi_add_weight(nn, vertices[i], weights[i] / 2.0);

    if (nvertices > 0) {
        free(vertices);
        free(weights);
    }
}