diff options
author | Germano Cavalcante <germano.costa@ig.com.br> | 2017-02-17 15:49:20 +0300 |
---|---|---|
committer | Germano Cavalcante <germano.costa@ig.com.br> | 2017-02-17 15:49:20 +0300 |
commit | 31123f09cd431191e99135c17e80b96441f985f5 (patch) | |
tree | f1783f26a7a84fdbaaca6d8b26dbec1a505d096a /source/blender/blenlib/intern/math_geom.c | |
parent | d41451a0ca5053885deffce2bf603fc6c488ddf4 (diff) |
Remove unused functions related to distance between BoundBox and ray
Diffstat (limited to 'source/blender/blenlib/intern/math_geom.c')
-rw-r--r-- | source/blender/blenlib/intern/math_geom.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index aeb6a550cd9..3cf26ccf904 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -2337,224 +2337,6 @@ bool isect_ray_aabb_v3_simple( } } -void dist_squared_ray_to_aabb_v3_precalc( - struct NearestRayToAABB_Precalc *data, - const float ray_origin[3], const float ray_direction[3]) -{ - float dir_sq[3]; - - for (int i = 0; i < 3; i++) { - data->ray_origin[i] = ray_origin[i]; - data->ray_direction[i] = ray_direction[i]; - data->ray_inv_dir[i] = (data->ray_direction[i] != 0.0f) ? (1.0f / data->ray_direction[i]) : FLT_MAX; - /* It has to be a function of `ray_inv_dir`, - * since the division of 1 by 0.0f, can be -inf or +inf */ - data->sign[i] = (data->ray_inv_dir[i] < 0.0f); - - dir_sq[i] = SQUARE(data->ray_direction[i]); - } - - /* `diag_sq` Length square of each face diagonal */ - float diag_sq[3] = { - dir_sq[1] + dir_sq[2], - dir_sq[0] + dir_sq[2], - dir_sq[0] + dir_sq[1], - }; - data->idiag_sq[0] = (diag_sq[0] > FLT_EPSILON) ? (1.0f / diag_sq[0]) : FLT_MAX; - data->idiag_sq[1] = (diag_sq[1] > FLT_EPSILON) ? (1.0f / diag_sq[1]) : FLT_MAX; - data->idiag_sq[2] = (diag_sq[2] > FLT_EPSILON) ? (1.0f / diag_sq[2]) : FLT_MAX; - - data->cdot_axis[0] = data->ray_direction[0] * data->idiag_sq[0]; - data->cdot_axis[1] = data->ray_direction[1] * data->idiag_sq[1]; - data->cdot_axis[2] = data->ray_direction[2] * data->idiag_sq[2]; -} - -/** - * Returns the squared distance from a ray to a bound-box `AABB`. - * It is based on `fast_ray_nearest_hit` solution to obtain - * the coordinates of the nearest edge of Bound Box to the ray - */ -float dist_squared_ray_to_aabb_v3( - const struct NearestRayToAABB_Precalc *data, - const float bb_min[3], const float bb_max[3], - bool r_axis_closest[3]) -{ - /* `tmin` is a vector that has the smaller distances to each of the - * infinite planes of the `AABB` faces (hit in nearest face X plane, - * nearest face Y plane and nearest face Z plane) */ - float local_bvmin[3], local_bvmax[3]; - - if (data->sign[0] == 0) { - local_bvmin[0] = bb_min[0] - data->ray_origin[0]; - local_bvmax[0] = bb_max[0] - data->ray_origin[0]; - } - else { - local_bvmin[0] = bb_max[0] - data->ray_origin[0]; - local_bvmax[0] = bb_min[0] - data->ray_origin[0]; - } - - if (data->sign[1] == 0) { - local_bvmin[1] = bb_min[1] - data->ray_origin[1]; - local_bvmax[1] = bb_max[1] - data->ray_origin[1]; - } - else { - local_bvmin[1] = bb_max[1] - data->ray_origin[1]; - local_bvmax[1] = bb_min[1] - data->ray_origin[1]; - } - - if (data->sign[2] == 0) { - local_bvmin[2] = bb_min[2] - data->ray_origin[2]; - local_bvmax[2] = bb_max[2] - data->ray_origin[2]; - } - else { - local_bvmin[2] = bb_max[2] - data->ray_origin[2]; - local_bvmax[2] = bb_min[2] - data->ray_origin[2]; - } - - const float tmin[3] = { - local_bvmin[0] * data->ray_inv_dir[0], - local_bvmin[1] * data->ray_inv_dir[1], - local_bvmin[2] * data->ray_inv_dir[2], - }; - - /* `tmax` is a vector that has the longer distances to each of the - * infinite planes of the `AABB` faces (hit in farthest face X plane, - * farthest face Y plane and farthest face Z plane) */ - const float tmax[3] = { - local_bvmax[0] * data->ray_inv_dir[0], - local_bvmax[1] * data->ray_inv_dir[1], - local_bvmax[2] * data->ray_inv_dir[2], - }; - /* `v1` and `v3` is be the coordinates of the nearest `AABB` edge to the ray*/ - float v1[3], v2[3]; - /* `rtmin` is the highest value of the smaller distances. == max_axis_v3(tmin) - * `rtmax` is the lowest value of longer distances. == min_axis_v3(tmax)*/ - float rtmin, rtmax, mul, rdist; - /* `main_axis` is the axis equivalent to edge close to the ray */ - int main_axis; - - r_axis_closest[0] = false; - r_axis_closest[1] = false; - r_axis_closest[2] = false; - - /* *** min_axis_v3(tmax) *** */ - if ((tmax[0] <= tmax[1]) && (tmax[0] <= tmax[2])) { - // printf("# Hit in X %s\n", data->sign[0] ? "min", "max"); - rtmax = tmax[0]; - v1[0] = v2[0] = local_bvmax[0]; - mul = local_bvmax[0] * data->ray_direction[0]; - main_axis = 3; - r_axis_closest[0] = data->sign[0]; - } - else if ((tmax[1] <= tmax[0]) && (tmax[1] <= tmax[2])) { - // printf("# Hit in Y %s\n", data->sign[1] ? "min", "max"); - rtmax = tmax[1]; - v1[1] = v2[1] = local_bvmax[1]; - mul = local_bvmax[1] * data->ray_direction[1]; - main_axis = 2; - r_axis_closest[1] = data->sign[1]; - } - else { - // printf("# Hit in Z %s\n", data->sign[2] ? "min", "max"); - rtmax = tmax[2]; - v1[2] = v2[2] = local_bvmax[2]; - mul = local_bvmax[2] * data->ray_direction[2]; - main_axis = 1; - r_axis_closest[2] = data->sign[2]; - } - - /* *** max_axis_v3(tmin) *** */ - if ((tmin[0] >= tmin[1]) && (tmin[0] >= tmin[2])) { - // printf("# To X %s\n", data->sign[0] ? "max", "min"); - rtmin = tmin[0]; - v1[0] = v2[0] = local_bvmin[0]; - mul += local_bvmin[0] * data->ray_direction[0]; - main_axis -= 3; - r_axis_closest[0] = !data->sign[0]; - } - else if ((tmin[1] >= tmin[0]) && (tmin[1] >= tmin[2])) { - // printf("# To Y %s\n", data->sign[1] ? "max", "min"); - rtmin = tmin[1]; - v1[1] = v2[1] = local_bvmin[1]; - mul += local_bvmin[1] * data->ray_direction[1]; - main_axis -= 1; - r_axis_closest[1] = !data->sign[1]; - } - else { - // printf("# To Z %s\n", data->sign[2] ? "max", "min"); - rtmin = tmin[2]; - v1[2] = v2[2] = local_bvmin[2]; - mul += local_bvmin[2] * data->ray_direction[2]; - main_axis -= 2; - r_axis_closest[2] = !data->sign[2]; - } - /* *** end min/max axis *** */ - - - /* `if rtmax < 0`, the whole `AABB` is behing us */ - if ((rtmax < 0.0f) && (rtmin < 0.0f)) { - return FLT_MAX; - } - - if (main_axis < 0) { - main_axis += 3; - } - - if (data->sign[main_axis] == 0) { - v1[main_axis] = local_bvmin[main_axis]; - v2[main_axis] = local_bvmax[main_axis]; - } - else { - v1[main_axis] = local_bvmax[main_axis]; - v2[main_axis] = local_bvmin[main_axis]; - } - - /* if rtmin < rtmax, ray intersect `AABB` */ - if (rtmin <= rtmax) { - const float proj = rtmin * data->ray_direction[main_axis]; - rdist = 0.0f; - r_axis_closest[main_axis] = (proj - v1[main_axis]) < (v2[main_axis] - proj); - } - else { - /* `proj` equals to nearest point on the ray closest to the edge `v1 v2` of the `AABB`. */ - const float proj = mul * data->cdot_axis[main_axis]; - float depth; - if (v1[main_axis] > proj) { /* the nearest point to the ray is the point v1 */ - /* `depth` is equivalent the distance from the origin to the point v1, - * Here's a faster way to calculate the dot product of v1 and ray - * (depth = dot_v3v3(v1, data->ray.direction))*/ - depth = mul + data->ray_direction[main_axis] * v1[main_axis]; - rdist = len_squared_v3(v1) - SQUARE(depth); - r_axis_closest[main_axis] = true; - } - else if (v2[main_axis] < proj) { /* the nearest point of the ray is the point v2 */ - depth = mul + data->ray_direction[main_axis] * v2[main_axis]; - rdist = len_squared_v3(v2) - SQUARE(depth); - r_axis_closest[main_axis] = false; - } - else { /* the nearest point of the ray is on the edge of the `AABB`. */ - float v[2]; - mul *= data->idiag_sq[main_axis]; - if (main_axis == 0) { - v[0] = (mul * data->ray_direction[1]) - v1[1]; - v[1] = (mul * data->ray_direction[2]) - v1[2]; - } - else if (main_axis == 1) { - v[0] = (mul * data->ray_direction[0]) - v1[0]; - v[1] = (mul * data->ray_direction[2]) - v1[2]; - } - else { - v[0] = (mul * data->ray_direction[0]) - v1[0]; - v[1] = (mul * data->ray_direction[1]) - v1[1]; - } - rdist = len_squared_v2(v); - r_axis_closest[main_axis] = (proj - v1[main_axis]) < (v2[main_axis] - proj); - } - } - - return rdist; -} - /* find closest point to p on line through (l1, l2) and return lambda, * where (0 <= lambda <= 1) when cp is in the line segment (l1, l2) */ |