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#define __VANISHING_POINT_C__
/*
* Vanishing point for 3D perspectives
*
* Authors:
* Maximilian Albert <Anhalter42@gmx.de>
*
* Copyright (C) 2007 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "vanishing-point.h"
#include <iostream>
namespace Box3D {
// FIXME: We should always require to have both the point (for finite VPs)
// and the direction (for infinite VPs) set. Otherwise toggling
// shows very unexpected behaviour.
// Later on we can maybe infer the infinite direction from the finite point
// and a suitable center of the scene. How to go in the other direction?
VanishingPoint::VanishingPoint(NR::Point const &pt, NR::Point const &inf_dir, VPState st)
: NR::Point (pt), state (st), v_dir (inf_dir) {}
VanishingPoint::VanishingPoint(NR::Point const &pt)
: NR::Point (pt), state (VP_FINITE), v_dir (0.0, 0.0) {}
VanishingPoint::VanishingPoint(NR::Point const &pt, NR::Point const &direction)
: NR::Point (pt), state (VP_INFINITE), v_dir (direction) {}
VanishingPoint::VanishingPoint(NR::Coord x, NR::Coord y)
: NR::Point(x, y), state(VP_FINITE), v_dir(0.0, 0.0) {}
VanishingPoint::VanishingPoint(NR::Coord dir_x, NR::Coord dir_y, VPState st)
: NR::Point(0.0, 0.0), state(st), v_dir(dir_x, dir_y) {}
VanishingPoint::VanishingPoint(NR::Coord x, NR::Coord y, NR::Coord dir_x, NR::Coord dir_y)
: NR::Point(x, y), state(VP_INFINITE), v_dir(dir_x, dir_y) {}
VanishingPoint::VanishingPoint(VanishingPoint const &rhs) : NR::Point (rhs)
{
this->state = rhs.state;
//this->ref_pt = rhs.ref_pt;
this->v_dir = rhs.v_dir;
}
bool VanishingPoint::is_finite()
{
return this->state == VP_FINITE;
}
VPState VanishingPoint::toggle_parallel()
{
if (this->state == VP_FINITE) {
this->state = VP_INFINITE;
} else {
this->state = VP_FINITE;
}
return this->state;
}
void VanishingPoint::draw(Box3D::Axis const axis)
{
switch (axis) {
case X:
if (state == VP_FINITE)
create_canvas_point(*this, 6.0, 0xff000000);
else
create_canvas_point(*this, 6.0, 0xffffff00);
break;
case Y:
if (state == VP_FINITE)
create_canvas_point(*this, 6.0, 0x0000ff00);
else
create_canvas_point(*this, 6.0, 0xffffff00);
break;
case Z:
if (state == VP_FINITE)
create_canvas_point(*this, 6.0, 0x00770000);
else
create_canvas_point(*this, 6.0, 0xffffff00);
break;
}
}
} // namespace Box3D
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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