osg.Viewport¶

class osg.Viewport¶

Represents

c++ class

Wraps

osg::Viewport

Bases

osg.StateAttribute

Encapsulate OpenGL glViewport (https://www.khronos.org/registry/OpenGL-Refpages/es2.0/xhtml/glViewport.xml).

Constructors:

osg.Viewport()¶

osg.Viewport(double x, double y, double width, double height)

Параметры

• x (double) –

• y (double) –

• width (double) –

• height (double) –

Methods:

:setViewport(double x, double y, double width, double height)¶

Параметры

• x (double) –

• y (double) –

• width (double) –

• height (double) –

:x()¶

Тип результата

double

:x(double value)

Параметры

value (double) –

:y()¶

Тип результата

double

:y(double value)

Параметры

value (double) –

:width()¶

Тип результата

double

:width(double value)

Параметры

value (double) –

:height()¶

Тип результата

double

:height(double value)

Параметры

value (double) –

:valid()¶

Тип результата

bool

:aspectRatio()¶

Return the aspectRatio of the viewport, which is equal to width/height. If height is zero, the potential division by zero is avoided by simply returning 1.0f.

Тип результата

double

:computeWindowMatrix()¶

Compute the Window Matrix which takes projected coords into Window coordinates. To convert local coordinates into window coordinates use v_window = v_local * MVPW matrix, where the MVPW matrix is ModelViewMatrix * ProjectionMatrix * WindowMatrix, the latter supplied by osg.Viewport.computeWindowMatrix(), the ModelView and Projection Matrix can either be sourced from the current osg.State object, via osgUtil.SceneView or osgUtil.CullVisitor:.

Тип результата

osg.Matrix