pdf-page/gemma-4-e2b / tier-4-gp2y0a21yk

ご提示いただいたデータシートに基づき、Sharp製測距センサ GP2Y0A21YK0FをOpenSCADでモデリングします。座標系と寸法（mm）の指定に従って作成します。

本体の中心を原点とし、取付面を-Z方向とするようにモデル化しました。

```openscad
// Sharp GP2Y0A21YK0F Distance Sensor Model (OpenSCAD)
// Coordinate System: Origin at center, Z points towards the mounting face (-Z is the mounting side)
// Units: mm

// --- Dimensions Reference ---
// Based on Outline Dimensions provided in the datasheet
// X-axis dimension (Length): 16.3 mm (from diagram)
// Y-axis dimension (Width): 7.5 mm (from diagram, based on projection)
// Thickness/Height: Varies depending on feature

// Define overall dimensions for the main body block (based on the base view)
module sensor_body() {
    // The shape is defined by the outline dimensions shown in the bottom view.
    // X dimension = 16.3 mm, Y dimension = 7.5 mm
    cube([16.3, 7.5, 4.15], center = true); // Using 4.15 as a reference depth/thickness for the main body structure
}

module mounting_features() {
    // Define mounting features based on the diagram (example placement relative to center)

    // Note: These dimensions are relative placements derived from the datasheet's outline view.
    
    // Example of defining a connector area (simplified representation)
    color("red")
    translate([0, 0, -4.15]) // Positioned at the mounting face (-Z direction)
    cube([16.3, 7.5, 2.0], center = true); // Represents the mounting plate/connector area

    // Example of defining a sensor position mark (simplified representation)
    color("blue")
    translate([8.15, 0, -4.15]) // Position based on X=8.15
    cube([2.0, 3.0, 1.0], center = true); // Represents a feature/mark at X=8.15
}

// --- Assembly ---

sensor_body();
mounting_features();

// Optional: Visualization for checking the model
// color("green")
// translate([0, 0, -20])
// cube([30, 30, 40], center = true); // Reference cube
```