Android Open Source - Cardboard Field Of View

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Back to project page Cardboard.

License

The source code is released under:

Apache License

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Java Source Code

package com.google.vrtoolkit.cardboard;
/*  ww  w  . j  a  v a2 s  . co  m*/
import android.opengl.Matrix;

public class FieldOfView {
  private float mLeft;
  private float mRight;
  private float mBottom;
  private float mTop;

  public FieldOfView() {
  }

  public FieldOfView(float left, float right, float bottom, float top) {
    this.mLeft = left;
    this.mRight = right;
    this.mBottom = bottom;
    this.mTop = top;
  }

  public FieldOfView(FieldOfView other) {
    this.mLeft = other.mLeft;
    this.mRight = other.mRight;
    this.mBottom = other.mBottom;
    this.mTop = other.mTop;
  }

  public void setLeft(float left) {
    this.mLeft = left;
  }

  public float getLeft() {
    return this.mLeft;
  }

  public void setRight(float right) {
    this.mRight = right;
  }

  public float getRight() {
    return this.mRight;
  }

  public void setBottom(float bottom) {
    this.mBottom = bottom;
  }

  public float getBottom() {
    return this.mBottom;
  }

  public void setTop(float top) {
    this.mTop = top;
  }

  public float getTop() {
    return this.mTop;
  }

  public void toPerspectiveMatrix(float near, float far, float[] perspective,
      int offset) {
    if (offset + 16 > perspective.length) {
      throw new IllegalArgumentException(
          "Not enough space to write the result");
    }
    float l = (float) -Math.tan(Math.toRadians(this.mLeft)) * near;
    float r = (float) Math.tan(Math.toRadians(this.mRight)) * near;
    float b = (float) -Math.tan(Math.toRadians(this.mBottom)) * near;
    float t = (float) Math.tan(Math.toRadians(this.mTop)) * near;
    Matrix.frustumM(perspective, offset, l, r, b, t, near, far);
  }

  public boolean equals(Object other) {
    if (other == null) {
      return false;
    }
    if (other == this) {
      return true;
    }
    if (!(other instanceof FieldOfView)) {
      return false;
    }
    FieldOfView o = (FieldOfView) other;
    return (this.mLeft == o.mLeft) && (this.mRight == o.mRight)
        && (this.mBottom == o.mBottom) && (this.mTop == o.mTop);
  }

  public String toString() {
    return "FieldOfView {left:" + this.mLeft + " right:" + this.mRight
        + " bottom:" + this.mBottom + " top:" + this.mTop + "}";
  }
}

Java Source Code List