new Camera(options)
Camera is used to select the objects to display in a scene.
A camera doesn't rotate or scale objects in the x and y axis,
only the coordinates are changed to the transformation defined.
Parameters:
Name | Type | Argument | Description | ||||||||||||||||
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options |
Object |
<optional> |
Setup options.
Properties
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Members
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<private> cM :Grape2D.Matrix
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Computed matrix
Type:
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<private> icM :Grape2D.Matrix
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Inverse of the computed matrix
Type:
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<private> lookAt :Grape2D.Vector
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The position to where the camera is looking at.
Type:
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<private> scale :Grape2D.Vector
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Scale set by the user, should be defined in the matrix.
Type:
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<private> transformation :Grape2D.Matrix
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The transformation matrix to aply to the object coordinates.
Type:
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Methods
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<protected> computeMatrix()
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Computes the matrix for better performances.
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computeShape(renderer) → {Grape2D.Shape}
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Creates a shape, based on the camera transformation and renderer properties.
Parameters:
Name Type Description renderer
Grape2D.Renderer The renderer. - Source:
Returns:
A bounding volume representing the camera view region.- Type
- Grape2D.Shape
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getLookAt() → {Grape2D.Vector}
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Gets the look at property.
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Returns:
The look at.- Type
- Grape2D.Vector
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getScale() → {Grape2D.Vector}
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Gets the current scale. Scale defined in the transformation is not taken into account.
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Returns:
Scale- Type
- Grape2D.Vector
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rescale(scale)
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Sets a new scale.
Parameters:
Name Type Description scale
Grape2D.Vector The new scale. - Source:
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setLookAt(position)
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Sets the center position to where the camera is looking at.
Parameters:
Name Type Description position
Grape2D.Vector The new look at. - Source:
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viewportToWcs(renderer, vector) → {Grape2D.Vector}
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Applies the transformation, on a vector in the Viewport Coordinate System (VCS), to get a vector in the World Coordinate System (WSC).
Parameters:
Name Type Description renderer
Grape2D.Renderer The viewport. vector
Grape2D.Vector Vector in the VCS. - Source:
Returns:
A vector in the WCS- Type
- Grape2D.Vector
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wcsToViewport(renderer, vector) → {Grape2D.Vector}
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Applies the transformation, on a vector in the World Coordinate System (WCS), to get a vector in the Viewport (Renderer) Coordinate System (VSC).
Parameters:
Name Type Description renderer
Grape2D.Renderer The viewport. vector
Grape2D.Vector Vector in the WCS. - Source:
Returns:
A vector in the VCS- Type
- Grape2D.Vector