renderstack::frame Class Reference

holds transformation information

#include <frame.hpp>

Inherits renderstack::uniform_source.

Inherited by renderstack::camera.

Public Member Functions
	frame ()
void	translate_in_world (vec3 const &v)
void	rotate_in_world (vec3 const &axis, float angle_radians)
void	set_hpb_xyz (vec3 const &hpb, vec3 const &xyz)
matrix &	local_to_world ()
matrix &	world_to_local ()
matrix const &	local_to_world () const
matrix const &	world_to_local () const
vec3	position_in_world ()
bool	connect (uniform_bindings &bindings, enum logical_uniform uniform, int slot)
Static Public Attributes
static class frame	identity

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Detailed Description

Definition at line 37 of file frame.hpp.

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Constructor & Destructor Documentation

renderstack::frame::frame

(

)

Definition at line 35 of file frame.cpp.

{
    m_local_to_world = matrix::identity();
    m_world_to_local = matrix::identity();
}

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Member Function Documentation

void renderstack::frame::translate_in_world

(

vec3 const &

v

)

Definition at line 51 of file frame.cpp.

{
    m_local_to_world.m[3][0] += t.x;
    m_local_to_world.m[3][1] += t.y;
    m_local_to_world.m[3][2] += t.z;
    m_world_to_local = inverse(m_local_to_world);
}

void renderstack::frame::rotate_in_world	(	vec3 const &	axis,
		float	angle_radians
	)

Definition at line 59 of file frame.cpp.

{
    vec3    a = axis;
    float   half_angle     = 0.5f * angle;
    float   half_angle_sin = sinf(half_angle);
    float   half_angle_cos = cosf(half_angle);
    matrix  local_to_world;

    while(angle < 0)
    {
        angle += RS_TWO_PI;
    }

    while(angle >= RS_TWO_PI)
    {
        angle -= RS_TWO_PI;
    }

    quaternion q = quaternion(axis, half_angle_sin, half_angle_cos);
    m_local_to_world *= matrix(q);
    m_world_to_local = inverse(m_local_to_world);
}

void renderstack::frame::set_hpb_xyz	(	vec3 const &	hpb,
		vec3 const &	xyz
	)

Definition at line 82 of file frame.cpp.

{
    make_matrix_hpb_xyz(
        m_local_to_world, 
        m_world_to_local,
        hpb_mod_2pi(hpb),
        translation
    );
}

matrix& renderstack::frame::local_to_world

(

)

[inline]

Definition at line 47 of file frame.hpp.

{ return m_local_to_world; }

matrix& renderstack::frame::world_to_local

(

)

[inline]

Definition at line 48 of file frame.hpp.

{ return m_world_to_local; } 

matrix const& renderstack::frame::local_to_world

(

)

const [inline]

Definition at line 49 of file frame.hpp.

{ return m_local_to_world; }

matrix const& renderstack::frame::world_to_local

(

)

const [inline]

Definition at line 50 of file frame.hpp.

{ return m_world_to_local; } 

vec3 renderstack::frame::position_in_world

(

)

[inline]

Definition at line 52 of file frame.hpp.

{ return m_local_to_world.column3(3); }

bool renderstack::frame::connect	(	uniform_bindings &	bindings,
		enum logical_uniform	uniform,
		int	slot
	)			[virtual]

Implements renderstack::uniform_source.

Reimplemented in renderstack::camera.

Definition at line 41 of file frame.cpp.

{
    switch(uniform)
    {
        case logical_uniform_local_to_world: return bindings.add(uniform_type_matrix_4, slot, 1, &m_local_to_world.m[0][0]);
        case logical_uniform_world_to_local: return bindings.add(uniform_type_matrix_4, slot, 1, &m_world_to_local.m[0][0]);
        default: return false;
    }
}

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Field Documentation

class frame renderstack::frame::identity [static]

Definition at line 58 of file frame.hpp.

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The documentation for this class was generated from the following files:

• frame.hpp
• frame.cpp