Distorting Images
Distorting Images
Canvas X Draw features an image effect that you can use to warp an image so it fits the bounding box of a vector object.
Shape Effect
To use this effect, you must first select an image and vector object.
To Apply the Shape Effect:
Select an image and a vector object and choose Image | Image Warp | Shape.
The Shape command is not available if more than one image or vector object is selected.
Control points | Click to add control points to both the source and target. Every source point must have a corresponding target point. At least 3 points must be defined to enable the Create button. Control points are saved in relative position to object, so if you drag or scale an object, the points will be scaled correspondingly. Save the document after change the control points configuration. When exiting the session, current point configuration is automatically saved. |
Segment points | Click to add segments to both the source and target. Every source segment must have a corresponding target segment. |
Curve points | Click to add curve segments to both the source and target. Every source curve must have a corresponding target curve. |
End curve points | Click to complete the curve. |
Select all points | Click to select all control points. |
Delete | Delete has two functions: delete current curve, if you are creating a curve, or delete selection, if any. |
Save | Click this button to save the control points within the source and target. |
Reload | Click this button to reload the saved points. |
Pixel resampling | Select a resampling method. Nearest neighbor: Will remove some pixel information from your target image; however, if used, this setting will be the fastest. Bilinear: Will use a bilinear interpolation algorithm during downsampling. Biquadratic: Estimates the color at a pixel in the destination image by an average of 9 pixels surrounding the closest corresponding pixel in the source image. Bicubic: Estimates the colour at a pixel in the destination image by an average of 16 pixels surrounding the closest corresponding pixel in the source image. Polygonal: Every source pixel is mapped to a polygon in the target. Auto: Canvas X Draw selects the most appropriate method for resampling. |
Show Names | Select this checkbox if you want to see labels. Use the Size menu to adjust the size of control points. |
Shape | Select either Circle or Square for the control point shape. |
Opacity | Adjust the transparency of the created object. |
Source & Target colors | Select a color from the palettes to distinguish the source and target. By default, the source is red and the target is green. |
Create | Click this button to perform the effect. |
Delete | Click this button to delete the created object. |
Exit | Click this button to leave the warp effect before or after clicking Create. |
| |
| The image is the Source and the vector object is the Target. Each Source control point has a matching Target control point. If the vector object contains a fill ink, the fill will be removed after the effect is applied. |
Envelope Effect
The Envelope command lets you distort image objects, as if an image was drawn on a rubber sheet and then stretched.
When an image object is in Envelope Edit mode, its bounding box acts like the rubber sheet. Canvas X Draw includes several envelope styles that offer various handles you can use to manipulate an object’s bounding box.
To learn about the envelope styles and their respective uses, see Enveloping Objects.
| Original image |
| Enveloped image |
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