Kstars

stereographicprojector.cpp
1 /*
2  SPDX-FileCopyrightText: 2010 Henry de Valence <[email protected]>
3 
4  SPDX-License-Identifier: GPL-2.0-or-later
5 */
6 
7 #include "stereographicprojector.h"
8 
9 StereographicProjector::StereographicProjector(const ViewParams &p) : Projector(p)
10 {
11  updateClipPoly();
12 }
13 
14 Projector::Projection StereographicProjector::type() const
15 {
16  return Stereographic;
17 }
18 
20 {
21  return 2.;
22 }
23 
25 {
26  return 2.0 / (1.0 + x);
27 }
28 
30 {
31  return 2.0 * atan2(x, 2.0);
32 }
double projectionL(double x) const override
This function handles some of the projection-specific code.
This is just a container that holds information needed to do projections.
Definition: projector.h:36
double projectionK(double x) const override
This function handles some of the projection-specific code.
double radius() const override
Get the radius of this projection's sky circle.
Projection type() const override
Return the type of this projection.
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