38 lines
542 B
Go
38 lines
542 B
Go
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package gx
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// Implements the camera component
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// for the main window.
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type Camera struct {
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*Object
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}
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// Returns the matrix satysfying camera
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// position, scale and rotation to apply
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// it to the objects to get the real
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// transform to display on the screen.
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func (c *Camera)Matrix(scale bool) Matrix {
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g := &Matrix{}
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g.Translate(
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c.Object.T.RA.X,
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c.Object.T.RA.Y,
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)
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g.Rotate(c.Object.T.R)
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g.Translate(
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-c.Object.T.P.X,
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-c.Object.T.P.Y,
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)
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if scale {
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g.Scale(
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c.Object.T.S.X,
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c.Object.T.S.Y,
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)
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}
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return *g
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}
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