Android Open Source - DivisionByZero Rectangle

• Back to Game/defence  ↑

From Project

Back to project page DivisionByZero.

License

The source code is released under:

Apache License

Java Source Code

package com.ggstudios.divisionbyzero;
//from w w  w. j  a v a 2  s  .c o m
import static fix.android.opengl.GLES20.glVertexAttribPointer;
import android.opengl.GLES20;

import com.ggstudios.utils.BufferUtils;

class Rectangle extends Drawable {
  private int handle;

  float x, y, w, h;

  private float r, g, b;
  private int textureHandle = 0;
  private float scaleW = 1f;
  private float scaleH = 1f;

  public float transparency = 1f;

  private boolean dirty = false;

  /**
   * Creates a drawable square object
   * 
   * @param x  X
   * @param y Y
   * @param w Width
   * @param h Height
   * @param a Alpha
   * @param r Red
   * @param g Green
   * @param b Blue
   */

  public Rectangle(float x, float y, float w, float h, int color){
    this.x = x;
    this.y = y;

    this.w = w;
    this.h = h;

    r = ((color>>16)&0xFF) / 255f;
    g = ((color>>8)&0xFF) / 255f;
    b = ((color)&0xFF) / 255f;

    refresh();
  }

  public void setSize(float newW, float newH){
    w = newW;
    h = newH;

    dirty = true;
  }

  public void setScaleWidth(float scaleW) {
    this.scaleW = scaleW;
  }

  private void rebuild() {
    handle = BufferUtils.createRectangleBuffer(w, h);
    textureHandle = Core.tm.get(R.drawable.white);
  }

  @Override
  public void draw(float offX, float offY) {
    if(dirty) {
      rebuild();
      dirty = false;
    }

    final float finalX = offX + x;
    final float finalY = offY + y;

    Utils.resetMatrix();
    if(scaleW != 1f)
      Utils.scaleW(scaleW);
    if(scaleH != 1f)
      Utils.scaleH(scaleH);
    Utils.translateAndCommit(finalX, finalY);

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle);
    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, handle);
    glVertexAttribPointer(Core.A_POSITION_HANDLE, 2, GLES20.GL_FLOAT, false, 0, 0);

    GLES20.glUniform4f(Core.U_TEX_COLOR_HANDLE, r, g, b, transparency);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    GLES20.glUniform4f(Core.U_TEX_COLOR_HANDLE, 1, 1, 1, 1);
  }

  @Override
  public void refresh() {
    rebuild();
  }

  public void setScaleHeight(float scaleH) {
    this.scaleH = scaleH;
  }
}

Java Source Code List

• Back to Game/defence  ↑