Kstars

stereographicprojector.cpp
1/*
2 SPDX-FileCopyrightText: 2010 Henry de Valence <hdevalence@gmail.com>
3
4 SPDX-License-Identifier: GPL-2.0-or-later
5*/
6
7#include "stereographicprojector.h"
8
9StereographicProjector::StereographicProjector(const ViewParams &p) : Projector(p)
10{
11 updateClipPoly();
12}
13
14Projector::Projection StereographicProjector::type() const
15{
16 return Stereographic;
17}
18
20{
21 // Allow everything
22 return 2 * M_PI;
23}
24
26{
27 return 2.0 / (1.0 + x);
28}
29
31{
32 return 2.0 * atan2(x, 2.0);
33}
34
36{
37 // Allow everything
38 return -1.0;
39}
The Projector class is the primary class that serves as an interface to handle projections.
Definition projector.h:58
double cosMaxFieldAngle() const override
This function returns the cosine of the maximum field angle, i.e., the maximum angular distance from ...
Projection type() const override
Return the type of this projection.
double radius() const override
Get the radius of this projection's sky circle.
double projectionL(double x) const override
This function handles some of the projection-specific code.
double projectionK(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:37
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