DD::Image::rPoint Class Reference

Inherits DD::Image::rPrimitive.

List of all members.

Public Member Functions
const char *	Class ()
	rPoint (const GeoInfo *info, const Primitive *p, Point::RenderMode mode, float r)
	rPoint (const GeoInfo *info, const Primitive *p, int mode, float r)
	rPoint (const GeoInfo *info, const Primitive *p, Point::RenderMode mode, const Vector4 &color, float r)
	rPoint (const GeoInfo *info, const Primitive *p, int mode, const Vector4 &color, float r)
	rPoint (const rPoint &)
bool	add_to_render (Scene *, PrimitiveContext *)
bool	intersect (float x, float y) const
bool	intersect (float x, float y, float *dist) const
bool	intersect_dist_squared (float x, float y, float *dist_squared) const
bool	intersect_scanline (float y, int &X, int &R, VArray &out, VArray &du, VArray &dv) const
rPrimitiveType	getPrimitiveType () const
float	trace (Scene *)
float	distance (float x, float y) const
float	distance_squared (float x, float y) const
Public Attributes
VArray	v
Point::RenderMode	render_mode
float	radius
Vector4	_color

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Detailed Description

Renderable point primitive.

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Member Function Documentation

bool rPoint::add_to_render	(	Scene *	scene,
		PrimitiveContext *	ptx
	)			[virtual]

Adds the point to the render if it is beyond the near plane.

Apply perspective to the point.

Implements DD::Image::rPrimitive.

References DD::Image::Scene::add_clipped_render_primitive(), DD::Image::VArray::Cf(), DD::Image::MatrixArray::matrix(), DD::Image::VArray::P(), DD::Image::VArray::PL(), DD::Image::Matrix4::transform(), DD::Image::PrimitiveContext::transforms(), DD::Image::Vector4::w, DD::Image::VArray::w_normalize(), DD::Image::Vector4::x, DD::Image::Vector4::y, and DD::Image::Vector4::z.

bool rPoint::intersect_scanline	(	float	y,
		int &	X,
		int &	R,
		VArray &	out,
		VArray &	du,
		VArray &	dv
	)			const [virtual]

Intersect the point with a scanline. Return whether it was successful and the left and right intersection vertices.

Implements DD::Image::rPrimitive.

References DD::Image::VArray::channels, DD::Image::Box3::f(), DD::Image::VArray::UV(), DD::Image::VArray::x(), and DD::Image::VArray::y().

float rPoint::trace

(

Scene *

scene

)

[virtual]

Not implemented yet.

Implements DD::Image::rPrimitive.

float rPoint::distance	(	float	x,
		float	y
	)			const [virtual]

Distance the given screen-space point is away from the object. Returns 0 or negative if inside the object.

Implements DD::Image::rPrimitive.

References DD::Image::VArray::P(), DD::Image::Vector4::x, and DD::Image::Vector4::y.

float rPoint::distance_squared	(	float	x,
		float	y
	)			const [virtual]

Square of the distance to the nearest edge the object in screen-space. Returns 0 or negative if inside the object.

Implements DD::Image::rPrimitive.

References DD::Image::Box3::d().