Multi-touch Drawing Input Method for Geometrical Figures
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Solution Overview
Problem
Conventional terminals require multiple steps and complex manipulation to draw geometrical figures like lines, circles, and arcs, as they need to enter specific input modes for each figure, increasing user interaction complexity.
Innovation Solution
A touch-enabled terminal with an input unit capable of detecting physical and electrical inputs allows users to draw geometrical figures using multi-touch gestures without entering a specific mode, using a combination of input tools to detect touch inputs, display movable lines, and receive selection commands to fix the length and direction of lines, enabling seamless drawing of lines, circles, and arcs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional terminals require entering specific input modes to draw geometrical figures, then figure drawing functionality is achieved, but manipulation complexity increases and operation efficiency decreases
Solution Approach 1:
The terminal uses a unified multi-touch gesture recognition mechanism that can identify different geometrical figures (lines, circles, arcs, rectangles) without requiring mode switching. The system detects touch patterns such as single-finger dragging for lines, two-finger gestures for circles and arcs, and automatically determines the figure type based on gesture characteristics, enabling one mechanism to serve multiple drawing functions.
Solution Approach 2:
The terminal automatically identifies the type of geometrical figure to be drawn based on the multi-touch gesture pattern detected, without requiring user input to specify the figure type. The system analyzes touch parameters such as number of contact points, movement trajectory, and relative positions to automatically determine whether to draw a line, circle, arc, or rectangle, reducing manual operation steps.
2Adaptability or versatility
If multiple operation modes are required for different figure types, then precise figure control is achieved, but user interaction complexity increases
Solution Approach 1:
The terminal assigns different recognition rules to different touch gesture patterns. For example, single-finger drag gestures are recognized as line drawing commands, while two-finger gestures with specific movement patterns are recognized as circle or arc drawing commands. Each gesture type has its own localized recognition logic, allowing precise figure type identification through diverse touch patterns without requiring mode switching.
Data Source
AI summary
The disclosure is a method and device for drawing a figure in correspondence to an input made with a first input tool and a second input tool to the terminal including an input unit capable of detecting physical touch and electrical input includes detecting a touch input made with the first and second input tools to the input unit; displaying at least one line movable according to contact points of the detected input on a display unit of the terminal; receiving a selection command based on the electrical input made with at least one of the first and second input tools; and displaying one of the at least one line as the line of which at least one of length and direction is fixed.