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Stellarium
24.4
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Stellarium
24.4
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Public Member Functions | |
| StelProjectorMercator (ModelViewTranformP func) | |
| QString | getNameI18 () const override |
| Get a human-readable name for this projection type. | |
| QString | getDescriptionI18 () const override |
| Get a human-readable short description for this projection type. | |
| float | getMaxFov () const override |
| Get the maximum FOV aperture in degree. | |
| bool | forward (Vec3f &win) const override |
| Apply the transformation in the forward direction in place. More... | |
| bool | backward (Vec3d &v) const override |
| Apply the transformation in the backward projection in place. | |
| QByteArray | getForwardTransformShader () const override |
| Returns GLSL code that can be used in a shader to implement forward transformation. | |
| QByteArray | getBackwardTransformShader () const override |
| Returns GLSL code that can be used in a shader to implement backward transformation. | |
 Public Member Functions inherited from StelProjector | |
| virtual | ~StelProjector () |
| Destructor. | |
| QString | getHtmlSummary () const |
| Get a HTML version of the short description for this projection type. | |
| virtual float | deltaZoom (float fov) const |
| Return the small zoom increment to use at the given FOV for nice movements. | |
| virtual void | setForwardTransformUniforms (QOpenGLShaderProgram &program) const |
| Sets the necessary uniforms so that the shader returned by getForwardTransformShader can work. | |
| virtual void | setBackwardTransformUniforms (QOpenGLShaderProgram &program) const |
| Sets the necessary uniforms so that the shader returned by getBackwardTransformShader can work. | |
| bool | intersectViewportDiscontinuity (const Vec3d &p1, const Vec3d &p2) const |
| Determine whether a great circle connection p1 and p2 intersects with a projection discontinuity. More... | |
| bool | intersectViewportDiscontinuity (const SphericalCap &cap) const |
| virtual float | fovToViewScalingFactor (float fov) const |
| Convert a Field Of View radius value in radians in ViewScalingFactor (used internally) | |
| virtual float | viewScalingFactorToFov (float vsf) const |
| Convert a ViewScalingFactor value (used internally) in Field Of View radius in radians. | |
| bool | getFlagGravityLabels () const |
| Get the current state of the flag which decides whether to arrange labels so that they are aligned with the bottom of a 2d screen, or a 3d dome. | |
| const Vec4i & | getViewport () const |
| Get the lower left corner of the viewport and the width, height. | |
| Vector2< qreal > | getViewportCenter () const |
| Get the center of the viewport relative to the lower left corner of the screen. | |
| Vector2< qreal > | getViewportCenterOffset () const |
| int | getViewportPosX () const |
| Get the horizontal viewport offset in pixels. | |
| int | getViewportPosY () const |
| Get the vertical viewport offset in pixels. | |
| int | getViewportWidth () const |
| Get the viewport width in pixels. | |
| int | getViewportHeight () const |
| Get the viewport height in pixels. | |
| qreal | getDevicePixelsPerPixel () const |
| Get the number of device pixels per "Device Independent Pixels" (value is usually 1, but 2 for mac retina screens). | |
| SphericalRegionP | getViewportConvexPolygon (float marginX=0., float marginY=0.) const |
| Return a convex polygon on the sphere which includes the viewport in the current frame. More... | |
| const SphericalCap & | getBoundingCap () const |
| Return a SphericalCap containing the whole viewport. | |
| float | getPixelPerRadAtCenter () const |
| Get size of a radian in pixels at the center of the viewport disk. | |
| float | getFov () const |
| Get the current FOV diameter in degrees. | |
| bool | needGlFrontFaceCW () const |
| Get whether front faces need to be oriented in the clockwise direction. | |
| bool | checkInViewport (const Vec3d &pos) const |
| Check to see if a 2d position is inside the viewport. More... | |
| bool | checkInViewport (const Vec3f &pos) const |
| Check to see if a 2d position is inside the viewport. More... | |
| Vec3d | viewPortIntersect (const Vec3d &p1, const Vec3d &p2) const |
| Return the position where the 2 2D point p1 and p2 cross the viewport edge P1 must be inside the viewport and P2 outside (check with checkInViewport() before calling this method) | |
| bool | project (const Vec3d &v, Vec3d &win) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | project (const Vec3f &v, Vec3f &win) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | project (const Vec3d &v, Vec3f &win) const |
| Project the vector v from the current frame into the viewport. More... | |
| virtual void | project (int n, const Vec3d *in, Vec3f *out) |
| virtual void | project (int n, const Vec3f *in, Vec3f *out) |
| bool | projectInPlace (Vec3d &vd) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | projectInPlace (Vec3f &v) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | projectCheck (const Vec3d &v, Vec3d &win) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | projectCheck (const Vec3f &v, Vec3f &win) const |
| Project the vector v from the current frame into the viewport. More... | |
| bool | unProject (const Vec3d &win, Vec3d &v) const |
| Project the vector v from the viewport frame into the current frame. More... | |
| bool | unProject (double x, double y, Vec3d &v) const |
| bool | projectLineCheck (const Vec3d &v1, Vec3d &win1, const Vec3d &v2, Vec3d &win2) const |
| Project the vectors v1 and v2 from the current frame into the viewport. More... | |
| QByteArray | getProjectShader () const |
| void | setProjectUniforms (QOpenGLShaderProgram &program) const |
| QByteArray | getUnProjectShader () const |
| void | setUnProjectUniforms (QOpenGLShaderProgram &program) const |
| ModelViewTranformP | getModelViewTransform () const |
| Get the current model view matrix. | |
| Mat4f | getProjectionMatrix () const |
| Get the current projection matrix. | |
| StelProjectorMaskType | getMaskType (void) const |
| Get the current type of the mask if any. | |
| bool | isSameProjection (const StelProjector &other) const |
Check whether the projection represented by other is the same as this. More... | |
Protected Member Functions | |
| bool | hasDiscontinuity () const override |
| Return whether the projection presents discontinuities. Used for optimization. | |
| bool | intersectViewportDiscontinuityInternal (const Vec3d &p1, const Vec3d &p2) const override |
| Determine whether a great circle connection p1 and p2 intersects with a projection discontinuity. More... | |
| bool | intersectViewportDiscontinuityInternal (const Vec3d &capN, double capD) const override |
| Determine whether a cap intersects with a projection discontinuity. | |
| Protected Member Functions inherited from StelProjector | |
| StelProjector (ModelViewTranformP amodelViewTransform) | |
| Private constructor. Only StelCore can create instances of StelProjector. | |
| virtual void | computeBoundingCap () |
| Initialize the bounding cap. | |
Additional Inherited Members | |
| Public Types inherited from StelProjector | |
| enum | StelProjectorMaskType { MaskNone , MaskDisk } |
| Define viewport mask types. More... | |
| typedef QSharedPointer< ModelViewTranform > | ModelViewTranformP |
| Shared pointer on a ModelViewTranform instance (implement reference counting) | |
| Static Public Member Functions inherited from StelProjector | |
| static const QString | maskTypeToString (StelProjectorMaskType type) |
| Get a string description of a StelProjectorMaskType. | |
| static StelProjectorMaskType | stringToMaskType (const QString &s) |
| Get a StelProjectorMaskType from a string description. | |
| Protected Attributes inherited from StelProjector | |
| ModelViewTranformP | modelViewTransform |
| float | flipHorz |
| float | flipVert |
| float | pixelPerRad |
| StelProjectorMaskType | maskType |
| double | zNear |
| double | oneOverZNearMinusZFar |
| Vec4i | viewportXywh |
| Vector2< qreal > | viewportCenter |
| Vector2< qreal > | viewportCenterOffset |
| qreal | viewportFovDiameter |
| bool | gravityLabels |
| float | defaultAngleForGravityText |
| SphericalCap | boundingCap |
| qreal | devicePixelsPerPixel |
| qreal | widthStretch |
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overridevirtual |
Apply the transformation in the forward direction in place.
After transformation v[2] will always contain the length of the original v: sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]) regardless of the projection type. This makes it possible to implement depth buffer testing in a way independent of the projection type. I would like to return the squared length instead of the length because of performance reasons. But then far away objects are not textured any more, perhaps because of a depth buffer overflow although the depth test is disabled?
Implements StelProjector.
Reimplemented in StelProjectorMiller.
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inlineoverrideprotectedvirtual |
Determine whether a great circle connection p1 and p2 intersects with a projection discontinuity.
For many projections without discontinuity, this should return always false, but for other like cylindrical projection it will return true if the line cuts the wrap-around line (i.e. at lon=180 if the observer look at lon=0).
Reimplemented from StelProjector.
1.9.1