Isadora Manual v1.3 - TroikaTronix

Distort, etc.) Higher numbered layers are “in front” of lowered numbered
layers, i.e. they are drawn last.
• blend: Determines the opacity of the video image in conjunction with the
intensity input. When set to additive, the image is added to the background
image – lower intensity settings reduce the brightness of the image. When set
to transparent, lower intensity values makes the object more transparent,
allowing you to see more of the image underneath. When set to opaque, lower
intensity values will fade the image to a black background that obscures the
background image.
• intensity: Sets the brightness or transparency of the image, from 0 to 100%.
See blend input for a complete description.
• render back: When turned off, the image is only rendered on the front side of
the rectangle. This means that if you rotate the image, it will be invisible when
viewed from the back. When turned on, the image is rendered on both the
front and back side, ensuring that it is visible from any viewing angle.
• depth test: When turned on, the depth (z-coordinate) of this taken into
account when rendering this object; other 3D objects/images that are in front
of this object will obscure it. When turned off, only the layer input is used to
determine whether or not this object will be obscured by other objects in the
scene.
• draw mode: When set to always, a rectangle is always rendered regardless of
whether or not there is a valid video input. When set to vid-in, the rectangle is
only rendered if a valid video image is present at the video input.
• zoom: Scales the image, from 0 to 1000% of its normal size.
• keep aspect: (v1.2) When turned on, the aspect of the incoming video stream
will be used to determine the aspect ratio of the rectangle into which the
image is rendered. The resulting image will be letterboxed horizontally or
vertically as needed. When turned off (or when no video input is present) the
aspect ratio of the rectangle defaults to 4:3. Note that the inputs that
manipulate the corners of the image will effect the final aspect ratio of the
image.
• aspect mod: allows the aspect ratio of the image rectangle to be manipulated.
Negative values will produce taller images, positive values will produce wider
images.
• x/y/z rotation: Rotates the image around its x, y or z axis.
• x/y/z translate: Translates the image along the x, y or z axis.
• x1/y1: Offsets the top left corner of the image. Negative values make the
corner move left (x) or up (y); positive values make the corner move right (x)
or down (y).
• x1/y1: Offsets the top left corner of the image. Negative values make the
corner towards the center, positive values move the corner away from the
center
• x2/y2: Offsets the top right corner of the image.
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