#include <opennurbs_plus_idimage.h>

Public Types
enum	CLIP_STATUS : unsigned int { unset = 0, unset = 0, xmin_clip = 0x01, xmax_clip = 0x02, ymin_clip = 0x04, ymax_clip = 0x08, zfar_clip = 0x10, znear_clip = 0x20, zbehind_clip = 0x40, xyz_mask = 0x7F, degenerate = 0x80, xyzd_mask = 0xFF, infrus = 0x100, liminal = 0x200, ignored = 0x400, frustum_clip_mask = 0x1FF, visibility_status_mask = 0x700, tridir_unset = 0x1000, tridir_none = 0x2000, tridir_ccw = 0x4000, tridir_cw = 0x8000, tridir_status_mask = 0xF000, custom_clip_1 = 0x00010000, custom_clip_2 = 0x00020000, custom_clip_3 = 0x00040000, custom_clip_4 = 0x00080000, custom_clip_5 = 0x00100000, custom_clip_6 = 0x00200000, custom_clip_7 = 0x00400000, custom_clip_8 = 0x00800000, custom_clip_9 = 0x01000000, custom_clip_10 = 0x02000000, custom_clip_11 = 0x04000000, custom_clip_12 = 0x08000000, custom_clip_13 = 0x10000000, custom_clip_14 = 0x20000000, custom_clip_15 = 0x40000000, custom_clip_16 = 0x80000000, custom_clip_mask = 0xFFFF0000, not_custom_clip_mask = 0x0000FFFF, all_bits_mask = 0xFFFFFFFF }

enum	DEPTH_TEST : unsigned int { unset = 0, DEPTH_TEST::never_passes, DEPTH_TEST::always_passes, DEPTH_TEST::less_passes, DEPTH_TEST::less_or_equal_passes, DEPTH_TEST::equal_passes, DEPTH_TEST::notequal_passes, DEPTH_TEST::greater_or_equal_passes, DEPTH_TEST::greater_passes }

enum	VISIBILITY : unsigned int { VISIBILITY::unset = 0, VISIBILITY::all_visible = 1, VISIBILITY::partially_visible = 2, VISIBILITY::not_visible = 3, VISIBILITY::unknown = 4 }

Public Member Functions
	ON_DepthImage ()

	~ON_DepthImage ()

bool	AddCustomClippingConvexRegion (const ON_PlaneEquation *plane_equations, size_t plane_equation_count)

unsigned int	BoundingBoxClipStatus (const class ON_BoundingBox *bbox) const

const class ON_DepthImageCustomClippingRegion *	ClipCoordinateCustomClippingRegion () const

unsigned int	ConvexHullClipStatus (size_t point_count, size_t point_stride, const double *points) const

unsigned int	CustomClippingConvexRegionCount () const

unsigned int	CustomClippingPlaneCount () const

void	DeleteCustomClippingRegions ()

void	DestroyImage ()

bool	Draw3dBezierCurve (bool bIsRational, int order, size_t cv_stride, const double cv, ON__UINT_PTR id, const class ON_DepthImagePointShader shader)

bool	Draw3dLineSegment (const double world_point0, const double world_point1, ON__UINT_PTR id, const class ON_DepthImagePointShader *shader)

bool	Draw3dPoint (const double world_point, ON__UINT_PTR id, const class ON_DepthImagePointShader shader)

bool	DrawBezierCurve (const ON_BezierCurve &bezier_curve, ON__UINT_PTR id, const class ON_DepthImagePointShader *shader)

bool	DrawBrep (const class ON_Brep &brep, class ON_DepthImageTriangleMesh triangle_mesh, ON::mesh_type mesh_type, ON__UINT_PTR id, const class ON_DepthImageTriangleShader shader)

bool	DrawCurve (const ON_Curve curve, ON__UINT_PTR id, const class ON_DepthImagePointShader shader)

bool	DrawExtrusion (const class ON_Extrusion &extrusion, class ON_DepthImageTriangleMesh triangle_mesh, ON::mesh_type mesh_type, ON__UINT_PTR id, const class ON_DepthImageTriangleShader shader)

bool	DrawMesh (const class ON_Mesh &mesh, class ON_DepthImageTriangleMesh triangle_mesh, ON__UINT_PTR id, const class ON_DepthImageTriangleShader shader)

bool	DrawNurbsCurve (const ON_NurbsCurve &nurbs_curve, ON__UINT_PTR id, const class ON_DepthImagePointShader *shader)

bool	DrawTriangle (const double world_point1, const double world_point2, const double world_point3, ON__UINT_PTR id, const class ON_DepthImageTriangleShader shader)

bool	DrawTriangle (const float world_point1, const float world_point2, const float world_point3, ON__UINT_PTR id, const class ON_DepthImageTriangleShader shader)

bool	DrawTriangleMesh (const class ON_DepthImageTriangleMesh &triangle_mesh, ON__UINT_PTR id, const class ON_DepthImageTriangleShader *shader)

double	ErasedDepthValue () const

ON__UINT_PTR	ErasedIdValue () const

void	EraseImageDepth (double erased_depth)

void	EraseImageId (ON__UINT_PTR erased_id)

bool	GetPixel (int x, int y, ON__UINT_PTR id, double depth) const

bool	GetPixel (unsigned int x, unsigned int y, ON__UINT_PTR id, double depth) const

unsigned int	GetPointDepth (const double point[3], double *image_depth) const

bool	GetWorldPoint (double image_x, double image_y, double depth, double *world_point) const

unsigned int	GetWorldPoints (ON__UINT_PTR id_filter, ON_Interval depth_filter, ON_SimpleArray< ON_3dPoint > &points) const

unsigned int	GetWorldPoints (ON_SimpleArray< ON_3dPoint > &points) const

unsigned int	Height () const

bool	IsVisibleBoundingBox (ON_BoundingBox bbox, double expansion_distance, const ON_DepthImage::DEPTH_TEST depth_test, double depth_bias)

bool	IsVisibleTriangleMesh (class ON_DepthImageTriangleMesh &triangle_mesh, unsigned int triangle_status_mask, const ON_DepthImage::DEPTH_TEST depth_test, double depth_bias, class ON_DepthImagePixel pixel, class ON_DepthImageTriangle visible_triangle, double *visible_triangle_depth)

ON_Xform	ModelTransformation () const

ON_Xform	ModelTransformationInverse () const

unsigned int	ModelTransformationStackCount () const

const class ON_DepthImageCustomClippingRegion *	ObjCoordinateCustomClippingRegion () const
	GBA 12/19/16 RH-32565 Added cached Object coordinate version of custom clipping region. More...

void	PopAllModelTransformations ()

unsigned int	PopModelTransformation ()

ON_UUID	ProjectionId () const

const ON_Viewport &	ProjectionViewport () const

unsigned int	ProjectPoint (const double point[3], double image_point[3]) const

unsigned int	PushModelTransformation ()

unsigned int	PushModelTransformation (ON_Xform cumulative_model_transformation)

bool	SetCustomClippingConvexRegion (const ON_PlaneEquation *plane_equations, size_t plane_equation_count)

unsigned int	SetModelTransformation (ON_Xform cumulative_model_transformation)

bool	SetPixel (int x, int y, ON__UINT_PTR id, double depth)

bool	SetPixel (unsigned int x, unsigned int y, ON__UINT_PTR id, double depth)

bool	SetProjection (const ON_Viewport &vp, unsigned int image_width, unsigned int image_height, ON_UUID projection_id)

unsigned int	Width () const

const class ON_DepthImageCustomClippingRegion *	WorldCoordinateCustomClippingRegion () const

Static Public Member Functions
static ON_DepthImage::VISIBILITY	CustomClippingRegionVisibility (const class ON_DepthImageCustomClippingRegion *ccr, unsigned int bitwise_and_point_set_clip_status, unsigned int bitwise_or_point_set_clip_status)

static ON_DepthImage::VISIBILITY	FrustumVisibility (unsigned int bitwise_and_point_set_clip_status, unsigned int bitwise_or_point_set_clip_status)

static unsigned int	MaximumCustomClippingPlaneCount ()

static bool	PassesDepthTest (ON_DepthImage::DEPTH_TEST depth_test, double incoming_depth, double current_image_depth)

static ON_DepthImage::VISIBILITY	Visibility (const class ON_DepthImageCustomClippingRegion *ccr, unsigned int bitwise_and_point_set_clip_status, unsigned int bitwise_or_point_set_clip_status)

Friends
struct	INTERP_LINE_SEGMENT

Member Enumeration Documentation

◆ CLIP_STATUS

enum ON_DepthImage::CLIP_STATUS : unsigned int

Clipping status bits. (Not an enum class because these values are used to initize bits in unsigned ints.)

Enumerator
unset
unset
xmin_clip	view frustum clipping status. x < frustum left plane
xmax_clip	x > frustum right plane
ymin_clip	y < frustum bottom plane
ymax_clip	y > frustum top plane
zfar_clip	depth > frustum far distance
znear_clip	depth < frustum near distance
zbehind_clip	depth <= 0 (on or behind camera plane)
xyz_mask
degenerate	unable to project or clip - generally a calculation failed
xyzd_mask	(degenerate \| xyz_mask)
infrus	view frustum visibility completely inside view frustum
liminal	may be partially inside frustum - more testing and clipping is required
ignored	outside frustum, outside custom clip region, not visible, calculation failed, degenerate, ...
frustum_clip_mask	(degenerate \| infrus \| xyz_mask )
visibility_status_mask	(infrus \| liminal \| ignored)
tridir_unset	Triangle vertex order. cannot compute triangle dir because a portion is behind the perspective viewpoint
tridir_none	after clipping, triangles with this status have the direction calculated when needed. projected triangle has negligible area (side facing or degenerate)
tridir_ccw	projected triangle vertices run counterclockwise (front facing)
tridir_cw	projected triangle vertices run clockwise (back facing)
tridir_status_mask
custom_clip_1	a maximum of 16 custom clipping planes can be use to define up to 16 convex regions. The union of the regions is the active space. This permits non-convex section views.
custom_clip_2
custom_clip_3
custom_clip_4
custom_clip_5
custom_clip_6
custom_clip_7
custom_clip_8
custom_clip_9
custom_clip_10
custom_clip_11
custom_clip_12
custom_clip_13
custom_clip_14
custom_clip_15
custom_clip_16
custom_clip_mask
not_custom_clip_mask
all_bits_mask

◆ DEPTH_TEST

enum ON_DepthImage::DEPTH_TEST : unsigned int

strong

Enumerator
unset
never_passes	pass = false
always_passes	pass = true
less_passes	pass = (incoming depth < current depth)
less_or_equal_passes	pass = (incoming depth <= current depth)
equal_passes	pass = (incoming depth == current depth)
notequal_passes	pass = (incoming depth != current depth)
greater_or_equal_passes	pass = (incoming depth > current depth)
greater_passes	pass = (incoming depth >= current depth)

◆ VISIBILITY

enum ON_DepthImage::VISIBILITY : unsigned int

strong

Enumerator
unset
all_visible
partially_visible	known to be partially visible
not_visible
unknown	more testing is required

Constructor & Destructor Documentation

◆ ON_DepthImage()

ON_DepthImage::ON_DepthImage ( )

◆ ~ON_DepthImage()

ON_DepthImage::~ON_DepthImage ( )

Member Function Documentation

◆ AddCustomClippingConvexRegion()

bool ON_DepthImage::AddCustomClippingConvexRegion	(	const ON_PlaneEquation *	plane_equations,
		size_t	plane_equation_count
	)

Parameters: plane_equations - [in] world coordinate custom clipping planes. A point is in the visible portion of the region if and only if the value of every plane equation is >= 0.0 at the point. plane_equation_count - [in] <= MaximumCustomClippingPlaneCount() - CustomClippingPlaneCount()

◆ BoundingBoxClipStatus()

unsigned int ON_DepthImage::BoundingBoxClipStatus ( const class ON_BoundingBox * bbox ) const

◆ ClipCoordinateCustomClippingRegion()

const class ON_DepthImageCustomClippingRegion* ON_DepthImage::ClipCoordinateCustomClippingRegion ( ) const

◆ ConvexHullClipStatus()

unsigned int ON_DepthImage::ConvexHullClipStatus	(	size_t	point_count,
		size_t	point_stride,
		const double *	points
	)		const

◆ CustomClippingConvexRegionCount()

unsigned int ON_DepthImage::CustomClippingConvexRegionCount ( ) const

Returns: Number of convex clipping regions. Remarks: The entire custom clipping region is the union of the convex clipping regions.

◆ CustomClippingPlaneCount()

unsigned int ON_DepthImage::CustomClippingPlaneCount ( ) const

Returns: Total number of planes in the custom clipping region. Remarks: These planes are grouped into subsets that bound convex subsets. The entire custom clipping region is the union of the convex subsets.

◆ CustomClippingRegionVisibility()

static ON_DepthImage::VISIBILITY ON_DepthImage::CustomClippingRegionVisibility	(	const class ON_DepthImageCustomClippingRegion *	ccr,
		unsigned int	bitwise_and_point_set_clip_status,
		unsigned int	bitwise_or_point_set_clip_status
	)

static

◆ DeleteCustomClippingRegions()

void ON_DepthImage::DeleteCustomClippingRegions ( )

◆ DestroyImage()

void ON_DepthImage::DestroyImage ( )

◆ Draw3dBezierCurve()

bool ON_DepthImage::Draw3dBezierCurve	(	bool	bIsRational,
		int	order,
		size_t	cv_stride,
		const double *	cv,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

◆ Draw3dLineSegment()

bool ON_DepthImage::Draw3dLineSegment	(	const double *	world_point0,
		const double *	world_point1,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

Description: Draw world_point into the current image. Parameters: world_point0 - [in] world_point1 - [in] world coordinate points to draw id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ Draw3dPoint()

bool ON_DepthImage::Draw3dPoint	(	const double *	world_point,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

Description: Draw world_point into the current image. Parameters: world_point - [in] world coordinate point to draw id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ DrawBezierCurve()

bool ON_DepthImage::DrawBezierCurve	(	const ON_BezierCurve &	bezier_curve,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

◆ DrawBrep()

bool ON_DepthImage::DrawBrep	(	const class ON_Brep &	brep,
		class ON_DepthImageTriangleMesh *	triangle_mesh,
		ON::mesh_type	mesh_type,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

Description: Draw brep into the current image. Parameters: brep - [in] brep to draw triangle_mesh - [in] null or the triangle_mesh that will be used to draw brep. This parameter is useful when many objects are being drawn to minimize calls to heap functions. id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentional terminated rendering by returning false. true Otherwise.

◆ DrawCurve()

bool ON_DepthImage::DrawCurve	(	const ON_Curve *	curve,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

◆ DrawExtrusion()

bool ON_DepthImage::DrawExtrusion	(	const class ON_Extrusion &	extrusion,
		class ON_DepthImageTriangleMesh *	triangle_mesh,
		ON::mesh_type	mesh_type,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

Description: Draw extrusion into the current image. Parameters: extrusion - [in] extrusion to draw triangle_mesh - [in] null or the triangle_mesh that will be used to draw extrusion. This parameter is useful when many objects are being drawn to minimize calls to heap functions. id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ DrawMesh()

bool ON_DepthImage::DrawMesh	(	const class ON_Mesh &	mesh,
		class ON_DepthImageTriangleMesh *	triangle_mesh,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

Description: Draw mesh into the current image. Parameters: mesh - [in] mesh to draw triangle_mesh - [in] null or the triangle_mesh that will be used to draw mesh. This parameter is useful when many objects are being drawn to minimize calls to heap functions. id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ DrawNurbsCurve()

bool ON_DepthImage::DrawNurbsCurve	(	const ON_NurbsCurve &	nurbs_curve,
		ON__UINT_PTR	id,
		const class ON_DepthImagePointShader *	shader
	)

◆ DrawTriangle() [1/2]

bool ON_DepthImage::DrawTriangle	(	const double *	world_point1,
		const double *	world_point2,
		const double *	world_point3,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

Description: Draw triangle_mesh into the current image. Parameters: world_point1 - [in] world_point2 - [in] world_point3 - [in] corners of the triangle id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ DrawTriangle() [2/2]

bool ON_DepthImage::DrawTriangle	(	const float *	world_point1,
		const float *	world_point2,
		const float *	world_point3,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

◆ DrawTriangleMesh()

bool ON_DepthImage::DrawTriangleMesh	(	const class ON_DepthImageTriangleMesh &	triangle_mesh,
		ON__UINT_PTR	id,
		const class ON_DepthImageTriangleShader *	shader
	)

Description: Draw triangle_mesh into the current image. Parameters: triangle_mesh - [in] triangle mesh to draw. id - [in] id passed to shader. shader - [in] null or a custom shader. Returns: false The image is not ready for drawing or the shader intentionally terminated rendering by returning false. true Otherwise.

◆ ErasedDepthValue()

double ON_DepthImage::ErasedDepthValue ( ) const

◆ ErasedIdValue()

ON__UINT_PTR ON_DepthImage::ErasedIdValue ( ) const

◆ EraseImageDepth()

void ON_DepthImage::EraseImageDepth ( double erased_depth )

◆ EraseImageId()

void ON_DepthImage::EraseImageId ( ON__UINT_PTR erased_id )

◆ FrustumVisibility()

static ON_DepthImage::VISIBILITY ON_DepthImage::FrustumVisibility	(	unsigned int	bitwise_and_point_set_clip_status,
		unsigned int	bitwise_or_point_set_clip_status
	)

static

◆ GetPixel() [1/2]

bool ON_DepthImage::GetPixel	(	int	x,
		int	y,
		ON__UINT_PTR *	id,
		double *	depth
	)		const

◆ GetPixel() [2/2]

bool ON_DepthImage::GetPixel	(	unsigned int	x,
		unsigned int	y,
		ON__UINT_PTR *	id,
		double *	depth
	)		const

◆ GetPointDepth()

unsigned int ON_DepthImage::GetPointDepth	(	const double	point[3],
		double *	image_depth
	)		const

Parameters: point - [in] world coordinate 3d point image_depth - [out] signed distance from the point to the image plane through the camera location.
Returns: ON_DepthImage::CLIP_STATUS::zfar_clip depth > frustum far depth ON_DepthImage::CLIP_STATUS::infrus depth >= frustum near depth and depth <= frustum far depth ON_DepthImage::CLIP_STATUS::znear_clip depth < frustum near depth ON_DepthImage::CLIP_STATUS::degenerate depth cannot be calculated A value set by bitwise or of ON_DepthImage::CLIP_STATUS values.

◆ GetWorldPoint()

bool ON_DepthImage::GetWorldPoint	(	double	image_x,
		double	image_y,
		double	depth,
		double *	world_point
	)		const

Parameters: image_x - [in] >= 0.0 and <= image.Width(). image_y - [in] >= 0.0 and <= image.Height(). Remarks: The lower left corner of the image has image coordinates (0,0) The upper right corner of the image has image coordinates (Width(),Height())

◆ GetWorldPoints() [1/2]

unsigned int ON_DepthImage::GetWorldPoints	(	ON__UINT_PTR	id_filter,
		ON_Interval	depth_filter,
		ON_SimpleArray< ON_3dPoint > &	points
	)		const

Description: Gets a world point at the center of each pixel whose id equals id depth is greater than zero and less than ON_DBL_MAX and not equal to ErasedDepthValue(). Parameters: id_filter - [in] All pixels whose id value is not equal to id_filter are skipped. depth_filter - [in] All pixels whos depth value does not satisfy depth >= depth_filter.m_min and depth <= depth_filter.m_max are skipped. points - [out] Output world coordinate points are appended to this array. Returns: number of points append to points[].

◆ GetWorldPoints() [2/2]

unsigned int ON_DepthImage::GetWorldPoints ( ON_SimpleArray< ON_3dPoint > & points ) const

Description: Gets a world point at the center of each pixel whose depth is greater than zero and less than ON_DBL_MAX and not equal to ErasedDepthValue(). Parameters: points - [out] Output world coordinate points are appended to this array. Returns: number of points append to points[].

◆ Height()

unsigned int ON_DepthImage::Height ( ) const

◆ IsVisibleBoundingBox()

bool ON_DepthImage::IsVisibleBoundingBox	(	ON_BoundingBox	bbox,
		double	expansion_distance,
		const ON_DepthImage::DEPTH_TEST	depth_test,
		double	depth_bias
	)

Description: Test a bounding box to see if some portion is visible. Parameters: bbox - [in] expansion_distance - [in] Before testing, expand the bounding box by adding this distance to each of the bbox.m_max coordinates and subtracting this distance from each of the bbox.m_min coordinates. depth_test - [in] depth_bias - [in] Before testing, move the bounding box a distance of depth_bias parallel to the view direction.
A positive depth_bias moves the deeper (away from the camera). A a negative depth_bias moves the box nearer (towards the camera).

◆ IsVisibleTriangleMesh()

bool ON_DepthImage::IsVisibleTriangleMesh	(	class ON_DepthImageTriangleMesh &	triangle_mesh,
		unsigned int	triangle_status_mask,
		const ON_DepthImage::DEPTH_TEST	depth_test,
		double	depth_bias,
		class ON_DepthImagePixel *	pixel,
		class ON_DepthImageTriangle *	visible_triangle,
		double *	visible_triangle_depth
	)

Description: Test a triangle mesh to see if some portion is visible.

Parameters: triangle_mesh - [in]

triangle_status_mask - [in] If triangle_status_mask is not zero, then only triangles satisfying 0 != (triangle_status & triangle_status_mask) will be tested. Specifically, setting triangle_status_mask to ON_DepthImage::tridir_ccw or ON_DepthImage::tridir_cw can be used to limit testing to front or back facing triangles.

depth_test - [in] To test for ordinary visibility, set depth_test to the same value used to create the image, typically ON_DepthImage::DEPTH_TEST::less_passes or ON_DepthImage::less_or_equal_passes. You can use other values to test if some portion of triangle_mesh is in the frustum and "behind" a set pixel by using ON_DepthImage::greater_passes.

depth_bias - [in] Before testing, move the bounding box a distance of depth_bias parallel to the view direction.
A positive depth_bias moves the deeper (away from the camera). A a negative depth_bias moves the box nearer (towards the camera).

pixel - [out] If not null, image pixel information for the first pixel discovered where the triangle_mesh is visible.

visible_triangle - [out] If not null, the triangle where the visible point was discovered.

triangle_depth - [out] If not null, the depth of the point on the visible triangle.

◆ MaximumCustomClippingPlaneCount()

static unsigned int ON_DepthImage::MaximumCustomClippingPlaneCount ( )

static

◆ ModelTransformation()

ON_Xform ON_DepthImage::ModelTransformation ( ) const

Returns: Cumulative model transformation.

◆ ModelTransformationInverse()

ON_Xform ON_DepthImage::ModelTransformationInverse ( ) const

Returns: Inverse of the cumulative model transformation.

◆ ModelTransformationStackCount()

unsigned int ON_DepthImage::ModelTransformationStackCount ( ) const

Returns: The number of transformations in model transformation stack. If no transformations have been pushed, then zero is returned.

◆ ObjCoordinateCustomClippingRegion()

const class ON_DepthImageCustomClippingRegion* ON_DepthImage::ObjCoordinateCustomClippingRegion ( ) const

GBA 12/19/16 RH-32565 Added cached Object coordinate version of custom clipping region.

◆ PassesDepthTest()

static bool ON_DepthImage::PassesDepthTest	(	ON_DepthImage::DEPTH_TEST	depth_test,
		double	incoming_depth,
		double	current_image_depth
	)

static

Parameters: depth_test - [in] specifies the type of depth test. incoming_depth - [in] depth value to test. current_image_depth - [in] deth value in the current image. Returns: true: incoming_depth passes the depth test when compared with current_image_depth. false: incoming_depth fails the depth test when compared with current_image_depth.

◆ PopAllModelTransformations()

void ON_DepthImage::PopAllModelTransformations ( )

Description: Empty the model transformation stack. This leaves the model transformation as the identity.

◆ PopModelTransformation()

unsigned int ON_DepthImage::PopModelTransformation ( )

Description: Remove the most recently pushed model transformation from the model transformation stack. Returns:

0:

The returned value is the number of transformations that were in the stack before the pop. 0: The model transformation stack was empty and nothing was changed.

◆ ProjectionId()

ON_UUID ON_DepthImage::ProjectionId ( ) const

◆ ProjectionViewport()

const ON_Viewport& ON_DepthImage::ProjectionViewport ( ) const

◆ ProjectPoint()

unsigned int ON_DepthImage::ProjectPoint	(	const double	point[3],
		double	image_point[3]
	)		const

Parameters: point - [in] world coordinate 3d point image_point - [out] x,y = image point z = signed distance from the point to the image plane through the camera location.
Returns: A value set by bitwise or of ON_DepthImage::CLIP_STATUS values.

◆ PushModelTransformation() [1/2]

unsigned int ON_DepthImage::PushModelTransformation ( )

Description: Push a copy of the current model transformation onto the model transformation stack. Returns:

0:

The returned value is the number of transformations that are in the stack after the push.

◆ PushModelTransformation() [2/2]

unsigned int ON_DepthImage::PushModelTransformation ( ON_Xform cumulative_model_transformation )

Description: Push a copy of the current model transformation onto the model transformation stack and set the cumulative transformation. Example: Add a translation to the cumulative model transformation. ON_Xform translation = ...; PushModelTransformation(ModelTransformation()*translation); Returns:

0:

The returned value is the number of transformations that are in the stack after the push.

◆ SetCustomClippingConvexRegion()

bool ON_DepthImage::SetCustomClippingConvexRegion	(	const ON_PlaneEquation *	plane_equations,
		size_t	plane_equation_count
	)

Parameters: plane_equations - [in] world coordinate custom clipping planes. A point is in the visible portion of the region if and only if the value of every plane equation is >= 0.0 at the point. plane_equation_count - [in] <= MaximumCustomClippingPlaneCount()

◆ SetModelTransformation()

unsigned int ON_DepthImage::SetModelTransformation ( ON_Xform cumulative_model_transformation )

Parameters: cumulative_model_transformation - [in] The cumulative model transformation that will be applied to world coordinate objects. Model transformations act on the left. Returns:

0:

The returned value is the number of transformations one the stack. 0: Invalid input.

◆ SetPixel() [1/2]

bool ON_DepthImage::SetPixel	(	int	x,
		int	y,
		ON__UINT_PTR	id,
		double	depth
	)

◆ SetPixel() [2/2]

bool ON_DepthImage::SetPixel	(	unsigned int	x,
		unsigned int	y,
		ON__UINT_PTR	id,
		double	depth
	)

◆ SetProjection()

bool ON_DepthImage::SetProjection	(	const ON_Viewport &	vp,
		unsigned int	image_width,
		unsigned int	image_height,
		ON_UUID	projection_id
	)

Parameters: vp - [in] A valid view projection.

The frustum near and far distances must satisfy frust_left != frus_right frust_bottom != frus_top frus_near > 0 frus_far > frus_near

image_width - [in] number of horizontal elements in the image's id and depth planes. > 0 Commonly set to vp.ScreenPortWidth()

image_height - [in] number of vertical elements in the image's id and depth planes. > 0 Commonly set to vp.ScreenPortHeight()

projection_id - [in] When not nil, the projection id is used by drawing functions to eliminate duplicating calculations during mult-pass rendering algorithms. When the projection is changed, either change the projection id or set it to nil. Remarks: The image's lower left corner has coordinates (0,0). The image's upper right corner has coordinates (image_width,image_height). The indices of the image's upper right id and depth elements are [image_width-1][image_height-1].

◆ Visibility()

static ON_DepthImage::VISIBILITY ON_DepthImage::Visibility	(	const class ON_DepthImageCustomClippingRegion *	ccr,
		unsigned int	bitwise_and_point_set_clip_status,
		unsigned int	bitwise_or_point_set_clip_status
	)

static

Description: Determine visibility of the convex hull of a point set based on the clip status bits of a collection of points in the set. The clip status bits for a point are set by bitwise | of ON_DepthImage::CLIP_STATUS enum values. For a mesh, the set of vertices works. For a bezier or NURBS curve or surface with positive weights, the set of control points works. Parameters: ccr - [in] nullptr or a pointer to the custom clipping region used to set the clip status bits. bitwise_and_point_set_clip_status - [in] a bitwise & of the individual point statuses. bitwise_or_point_set_clip_status - [in] a bitwise | of the individual point statuses. Returns: ON_DepthImage::VISIBILITY::unset Invalid input ON_DepthImage::VISIBILITY::all_visible The entire convex hull is in a visible region ON_DepthImage::VISIBILITY::not_visible The entire convex hull is outside all visible regions. ON_DepthImage::VISIBILITY::partially_visible The convex hull has portions that are visible and not visible. Note the object (mesh, curve, surface) could be completely visible or completely hidden in this case. ON_DepthImage::VISIBILITY::unknown Unable to determine visibility based on simple plane tests. At least one point is degenerate or is not visible, but the chord from this point to another in the set has the potential for being visible.

◆ Width()

unsigned int ON_DepthImage::Width ( ) const

◆ WorldCoordinateCustomClippingRegion()

const class ON_DepthImageCustomClippingRegion* ON_DepthImage::WorldCoordinateCustomClippingRegion ( ) const

Friends And Related Function Documentation

◆ INTERP_LINE_SEGMENT

friend struct INTERP_LINE_SEGMENT

friend

Public Types

Public Member Functions

Static Public Member Functions

Friends

Member Enumeration Documentation

◆ CLIP_STATUS

◆ DEPTH_TEST

◆ VISIBILITY

Constructor & Destructor Documentation

◆ ON_DepthImage()

◆ ~ON_DepthImage()

Member Function Documentation

◆ AddCustomClippingConvexRegion()

◆ BoundingBoxClipStatus()

◆ ClipCoordinateCustomClippingRegion()

◆ ConvexHullClipStatus()

◆ CustomClippingConvexRegionCount()

◆ CustomClippingPlaneCount()

◆ CustomClippingRegionVisibility()

◆ DeleteCustomClippingRegions()

◆ DestroyImage()

◆ Draw3dBezierCurve()

◆ Draw3dLineSegment()

◆ Draw3dPoint()

◆ DrawBezierCurve()

◆ DrawBrep()

◆ DrawCurve()

◆ DrawExtrusion()

◆ DrawMesh()

◆ DrawNurbsCurve()

◆ DrawTriangle() [1/2]

◆ DrawTriangle() [2/2]

◆ DrawTriangleMesh()

◆ ErasedDepthValue()

◆ ErasedIdValue()

◆ EraseImageDepth()

◆ EraseImageId()

◆ FrustumVisibility()

◆ GetPixel() [1/2]

◆ GetPixel() [2/2]

◆ GetPointDepth()

◆ GetWorldPoint()

◆ GetWorldPoints() [1/2]

◆ GetWorldPoints() [2/2]

◆ Height()

◆ IsVisibleBoundingBox()

◆ IsVisibleTriangleMesh()

◆ MaximumCustomClippingPlaneCount()

◆ ModelTransformation()

◆ ModelTransformationInverse()

◆ ModelTransformationStackCount()

◆ ObjCoordinateCustomClippingRegion()

◆ PassesDepthTest()

◆ PopAllModelTransformations()

◆ PopModelTransformation()

◆ ProjectionId()

◆ ProjectionViewport()

◆ ProjectPoint()

◆ PushModelTransformation() [1/2]

◆ PushModelTransformation() [2/2]

◆ SetCustomClippingConvexRegion()

◆ SetModelTransformation()

◆ SetPixel() [1/2]

◆ SetPixel() [2/2]

◆ SetProjection()

◆ Visibility()

◆ Width()

◆ WorldCoordinateCustomClippingRegion()

Friends And Related Function Documentation

◆ INTERP_LINE_SEGMENT