Using iSlideRule

The iSlideRule application has several features that aid in using the app. iSlideRule recognizes different touches and gestures as unique commands to the application.

When launched, the iSlideRule app comes up appearing (default settings) as:

There are six major regions presented in the app. These are:

Labels - left side of display showing named scales in current use.
Cursor - vertical colored bar with the hairline displayed to the right of the labels. Optionally, it can display numeric values.
Top Rule - the four scales on the top bar of the slide rule.
Slider - the center four scales on the slide rule, scrolls independently of the top and bottom rules.
Bottom Rule - the four scales on the bottom bar of the slide rule.
Info Button - flips the slide rule over to display this guidebook.

Each region responds to touches in its own way. These reactions are described below.

Labels

The Labels show which scales are currently selected for use on the top, slider, and bottom rules. Double-tapping on the labels will cause a simple descriptive panel to slide out from the left side, describing in a general term, the formula, and use, of each scale.

To dismiss the descriptive panel, double-tap on the panel or the labels area and the panel will slide back out of sight to the left.

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Cursor

The cursor responds to touches by hiding the numeric display when touched, and it can be moved to the left or right on the rules.

When the cursor reaches the left or right side of the display, the slide and rules lock together and move in unison in the opposite direction (for example, if the cursor is at the right side of the display, the top and bottom rules, and slider will move to the left, bringing more of the right side of the slide rule into visibility). The longer the cursor is held to the side of the display by touch, the faster the rules will move, slowing down automatically as the end of either the top/bottom rule, or slider approaches.

When you release the cursor, the rules and slide will automatically stop moving. and if enabled, the numeric values will display on the cursor after a brief pause.

Swiping up or down on the cursor with ONE finger will change the color scheme of the rule while the application remains active. The color scheme reverts to the default when the application is launched.

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Top and Bottom Rule

The top and bottom rules can be moved to the left or right by flicking either one or by touching and dragging them.

Additionally, they may be moved by touching the Slider and holding the touch. In this fashion, the rules will accelerate, then decelerate as the end of the rules approaches. Conversely, a touch and hold on the top or bottom rules causes the slider to move to the left or right.

A single tap on the top or bottom rule will cause the slider to move 1 display pixel left or right, depending on the location of the tap, for fine-tuning of results.

Double-tapping the top or bottom rule will cause the scale selections to transition from the current scale set to the next configured scale set. The change of scales does not generally alter the position of the cursor, so the values under the cursor will only be changed to the new set of scale values, as if the top and bottom rules each had twelve scales instead of just the four that are visible.

If the setting for locking the slider to the rules is enabled in Settings, the slider will move with the rules, left or right. If the setting is disabled, the behavior reverts to the way iSlideRule worked through the 2.0.0 release.

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Slider

The Slider is the center rule of the slide rule. It can be moved to the left or right by flicking it or by touching and dragging it.

Additionally, it may be moved by touching the Top or Bottom Rule and holding the touch. In this fashion, the slider will accelerate, then decelerate as the end of the rule approaches. Conversely, a touch and hold on the slider causes the top and bottom rules to move to the left or right.

A single tap on the slider will cause the top and bottom rule to move 1 display pixel left or right, depending on the location of the tap, for fine-tuning of results.

Double-tapping the slider will cause the scale selections to transition from the current scale set to the next configured scale set. The change of scales does not generally alter the position of the cursor, so the values under the cursor will only be changed to the new set of scale values, as if the slider had twelve scales instead of just the four that are visible.

FEATURE added in release 1.2.2: Touching the slider with TWO fingers locks the slider, top and bottom rules together, and by panning left or right, will rapidly show the nearest index at the left or right end of the rule, with the cursor remaining stationary at the last position it was in (possibly being obscured from view). When the touch is lifted, the view "snaps back" to where the cursor was previously placed.

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Info Button

The Info Button displays this guide. Pressing the DONE button at the top of this view returns to the slide rule.

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