 Curve tools
Spline Curve
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You
can add a new control point by clicking the mouse. Between each
pair of control points there is a spline curve. |
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You
can move a control point by dragging it with the mouse. |
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A
spline curve is fixed on the canvas, when you Right Click (Mac: Command+Click). |
Bezier Curve
| You
can set the start point1 and the end point2 by dragging the
mouse. |
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| Then you put two direction points3 and 4 on the canvas. These
two points set the tangents at the point1 and 2 respectively.
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| A
bezier curve is drawn and fixed after you put the point4. |
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Dodge, Burn, Finger and Blur
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Dodge is used to lighten an image and Burn darkens an image.
The figure shows the effect of each tools. The top light green
line is the original one, the middle line shows the effect of
Dodge and the bottom shows the effect of Burn. The effectiveness
of these tools can be adjusted by using the opacity slider in
the Color Palette. |
| The
finger tool smudges the graphics where it's used. The smudging
level can be controled by the opacity slider.B |
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Blur lessens the contrast between pixels softening the overall
look of the image. The bluring effect can be adjusted by changing
the opacity slide in the Color Palette. |
Selecting tools
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Selections are areas of an image you choose to isolate from
the rest of the image to make modifications. To construct a
selection of multiple selections hold the Shift key down when creating the
selections. Holding the Alt key down while creating additional selections
causes the new selections to be subtracted from the already
created selection. To unselect everything, simply click on the
unselected areas or press Ctrl+D. |
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To
repeat last selection, press Ctrl+F. To make inverse selection, press Ctrl+G.
The selections can be moved by clicking on the area and dragging.
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