math_intersect.h File Reference

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Functions
CCL_NAMESPACE_BEGIN ccl_device bool	ray_sphere_intersect (float3 ray_P, float3 ray_D, float ray_tmin, float ray_tmax, float3 sphere_P, float sphere_radius, ccl_private float3 *isect_P, ccl_private float *isect_t)
ccl_device bool	ray_aligned_disk_intersect (float3 ray_P, float3 ray_D, float ray_tmin, float ray_tmax, float3 disk_P, float disk_radius, ccl_private float3 *isect_P, ccl_private float *isect_t)
ccl_device bool	ray_disk_intersect (float3 ray_P, float3 ray_D, float ray_tmin, float ray_tmax, float3 disk_P, float3 disk_N, float disk_radius, ccl_private float3 *isect_P, ccl_private float *isect_t)
ccl_device_forceinline float	ray_triangle_rcp (const float x)
ccl_device_inline float	ray_triangle_dot (const float3 a, const float3 b)
ccl_device_inline float3	ray_triangle_cross (const float3 a, const float3 b)
ccl_device_forceinline bool	ray_triangle_intersect (const float3 ray_P, const float3 ray_D, const float ray_tmin, const float ray_tmax, const float3 tri_a, const float3 tri_b, const float3 tri_c, ccl_private float *isect_u, ccl_private float *isect_v, ccl_private float *isect_t)
ccl_device_forceinline bool	ray_triangle_intersect_self (const float3 ray_P, const float3 ray_D, const float3 verts[3])
ccl_device bool	ray_quad_intersect (float3 ray_P, float3 ray_D, float ray_tmin, float ray_tmax, float3 quad_P, float3 inv_quad_u, float3 inv_quad_v, float3 quad_n, ccl_private float3 *isect_P, ccl_private float *isect_t, ccl_private float *isect_u, ccl_private float *isect_v, bool ellipse)
ccl_device bool	ray_plane_intersect (const float3 N, const float3 P, const float3 ray_D, ccl_private float2 *t_range)
ccl_device bool	ray_aabb_intersect (const float3 bbox_min, const float3 bbox_max, const float3 ray_P, const float3 ray_D, ccl_private float2 *t_range)
ccl_device_inline bool	ray_infinite_cylinder_intersect (const float3 P, const float3 D, const float len_u, const float len_v, ccl_private float2 *t_range)
ccl_device_inline bool	ray_cone_intersect (const float3 axis, const float3 P, float3 D, const float cos_angle_sq, ccl_private float2 *t_range)

Function Documentation

ray_aabb_intersect()

ccl_device bool ray_aabb_intersect	(	const float3	bbox_min,
		const float3	bbox_max,
		const float3	ray_P,
		const float3	ray_D,
		ccl_private float2 *	t_range )

Definition at line 329 of file math_intersect.h.

References float3_to_float4(), make_float2(), max, min, rcp(), reduce_max(), and reduce_min().

Referenced by area_light_valid_ray_segment().

ray_aligned_disk_intersect()

ccl_device bool ray_aligned_disk_intersect	(	float3	ray_P,
		float3	ray_D,
		float	ray_tmin,
		float	ray_tmax,
		float3	disk_P,
		float	disk_radius,
		ccl_private float3 *	isect_P,
		ccl_private float *	isect_t )

Definition at line 50 of file math_intersect.h.

References dot(), len_squared(), normalize_len(), P, and UNLIKELY.

ray_cone_intersect()

ccl_device_inline bool ray_cone_intersect	(	const float3	axis,
		const float3	P,
		float3	D,
		const float	cos_angle_sq,
		ccl_private float2 *	t_range )

Definition at line 397 of file math_intersect.h.

References b, dot(), FLT_MAX, intervals_intersect(), inversesqrtf(), len_squared(), make_float2(), P, ray_plane_intersect(), solve_quadratic(), and sqr().

Referenced by area_light_valid_ray_segment(), and spot_light_valid_ray_segment().

ray_disk_intersect()

ccl_device bool ray_disk_intersect	(	float3	ray_P,
		float3	ray_D,
		float	ray_tmin,
		float	ray_tmax,
		float3	disk_P,
		float3	disk_N,
		float	disk_radius,
		ccl_private float3 *	isect_P,
		ccl_private float *	isect_t )

Definition at line 81 of file math_intersect.h.

References dot(), P, and sqr().

Referenced by point_light_intersect().

ray_infinite_cylinder_intersect()

ccl_device_inline bool ray_infinite_cylinder_intersect	(	const float3	P,
		const float3	D,
		const float	len_u,
		const float	len_v,
		ccl_private float2 *	t_range )

Definition at line 356 of file math_intersect.h.

References b, dot(), float3_to_float2(), intervals_intersect(), make_float2(), P, and solve_quadratic().

Referenced by area_light_valid_ray_segment().

ray_plane_intersect()

ccl_device bool ray_plane_intersect	(	const float3	N,
		const float3	P,
		const float3	ray_D,
		ccl_private float2 *	t_range )

Definition at line 307 of file math_intersect.h.

References dot(), fmaxf, fminf, N, and P.

Referenced by area_light_valid_ray_segment(), ray_cone_intersect(), and triangle_light_valid_ray_segment().

ray_quad_intersect()

ccl_device bool ray_quad_intersect	(	float3	ray_P,
		float3	ray_D,
		float	ray_tmin,
		float	ray_tmax,
		float3	quad_P,
		float3	inv_quad_u,
		float3	inv_quad_v,
		float3	quad_n,
		ccl_private float3 *	isect_P,
		ccl_private float *	isect_t,
		ccl_private float *	isect_u,
		ccl_private float *	isect_v,
		bool	ellipse )

Definition at line 257 of file math_intersect.h.

References dot(), NULL, and v.

Referenced by area_light_intersect(), and background_portal_pdf().

ray_sphere_intersect()

CCL_NAMESPACE_BEGIN ccl_device bool ray_sphere_intersect	(	float3	ray_P,
		float3	ray_D,
		float	ray_tmin,
		float	ray_tmax,
		float3	sphere_P,
		float	sphere_radius,
		ccl_private float3 *	isect_P,
		ccl_private float *	isect_t )

Definition at line 12 of file math_intersect.h.

References copysignf, dot(), len_squared(), and sqrtf.

Referenced by point_light_intersect(), and spot_light_sample().

ray_triangle_cross()

ccl_device_inline float3 ray_triangle_cross	(	const float3	a,
		const float3	b )

Definition at line 148 of file math_intersect.h.

References b, make_float3(), make_float4(), and msub().

Referenced by ray_triangle_intersect(), and ray_triangle_intersect_self().

ray_triangle_dot()

ccl_device_inline float ray_triangle_dot	(	const float3	a,
		const float3	b )

Definition at line 137 of file math_intersect.h.

References b, madd(), and make_float4().

Referenced by ray_triangle_intersect(), and ray_triangle_intersect_self().

ray_triangle_intersect()

ccl_device_forceinline bool ray_triangle_intersect	(	const float3	ray_P,
		const float3	ray_D,
		const float	ray_tmin,
		const float	ray_tmax,
		const float3	tri_a,
		const float3	tri_b,
		const float3	tri_c,
		ccl_private float *	isect_u,
		ccl_private float *	isect_v,
		ccl_private float *	isect_t )

Definition at line 160 of file math_intersect.h.

References dot(), eps, fabsf, max, min, ray_triangle_cross(), ray_triangle_dot(), ray_triangle_rcp(), UNLIKELY, V, v2, and W.

Referenced by motion_triangle_intersect(), triangle_intersect(), and triangle_light_sample().

ray_triangle_intersect_self()

ccl_device_forceinline bool ray_triangle_intersect_self	(	const float3	ray_P,
		const float3	ray_D,
		const float3	verts[3] )

Definition at line 221 of file math_intersect.h.

References eps, fabsf, max, min, ray_triangle_cross(), ray_triangle_dot(), V, v2, verts, and W.

Referenced by integrate_surface_ray_offset().

ray_triangle_rcp()

ccl_device_forceinline float ray_triangle_rcp

(

const float

x

)

Definition at line 113 of file math_intersect.h.

References x.

Referenced by ray_triangle_intersect().