0148293520
When GLSL sources were first included in Blender they were treated as data (like blend files) and had no license header. Since then GLSL has been used for more sophisticated features (EEVEE & real-time compositing) where it makes sense to include licensing information. Add SPDX copyright headers to *.glsl files, matching headers used for C/C++, also include GLSL files in the license checking script. As leading C-comments are now stripped, added binary size of comments is no longer a concern. Ref !111247
71 lines
1.5 KiB
GLSL
71 lines
1.5 KiB
GLSL
/* SPDX-FileCopyrightText: 2022-2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma BLENDER_REQUIRE(common_shape_lib.glsl)
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/* ---------------------------------------------------------------------- */
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/** \name Axis Aligned Bound Box
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* \{ */
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struct AABB {
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vec3 min, max;
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};
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AABB shape_aabb(vec3 min, vec3 max)
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{
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AABB aabb;
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aabb.min = min;
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aabb.max = max;
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return aabb;
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}
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AABB aabb_init_min_max()
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{
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AABB aabb;
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aabb.min = vec3(1.0e30);
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aabb.max = vec3(-1.0e30);
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return aabb;
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}
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void aabb_merge(inout AABB aabb, vec3 v)
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{
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aabb.min = min(aabb.min, v);
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aabb.max = max(aabb.max, v);
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}
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/**
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* Return true if there is any intersection.
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*/
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bool aabb_intersect(AABB a, AABB b)
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{
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return all(greaterThanEqual(min(a.max, b.max), max(a.min, b.min)));
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}
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/**
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* Compute intersect intersection volume of \a a and \a b.
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* Return true if the resulting volume is not empty.
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*/
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bool aabb_clip(AABB a, AABB b, out AABB c)
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{
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c.min = max(a.min, b.min);
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c.max = min(a.max, b.max);
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return all(greaterThanEqual(c.max, c.min));
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}
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Box aabb_to_box(AABB aabb)
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{
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Box box;
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box.corners[0] = aabb.min;
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box.corners[1] = vec3(aabb.max.x, aabb.min.y, aabb.min.z);
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box.corners[2] = vec3(aabb.max.x, aabb.max.y, aabb.min.z);
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box.corners[3] = vec3(aabb.min.x, aabb.max.y, aabb.min.z);
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box.corners[4] = vec3(aabb.min.x, aabb.min.y, aabb.max.z);
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box.corners[5] = vec3(aabb.max.x, aabb.min.y, aabb.max.z);
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box.corners[6] = aabb.max;
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box.corners[7] = vec3(aabb.min.x, aabb.max.y, aabb.max.z);
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return box;
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}
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/** \} */
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