package?com.hyq.hm.hyperlandmark;

import?android.opengl.GLES20;

import?java.nio.ByteBuffer;
import?java.nio.ByteOrder;
import?java.nio.FloatBuffer;
import?java.nio.ShortBuffer;

public?class?GLSquare?{

????//頂點(diǎn)緩沖區(qū)
????private?FloatBuffer?vertexBuffer;
????//繪圖順序頂點(diǎn)緩沖區(qū)
????private?ShortBuffer?drawListBuffer;

????//?每個(gè)頂點(diǎn)的坐標(biāo)數(shù)
????static?final?int?COORDS_PER_VERTEX?=?3;
????//正方形四個(gè)頂點(diǎn)的坐標(biāo)
????static?float?squareCoords[]?=?{-0.5f?0.5f?0.0f???//?top?left
????????????-0.5f?-0.5f?0.0f???//?bottom?left
????????????0.5f?-0.5f?0.0f???//?bottom?right
????????????0.5f?0.5f?0.0f};?//?top?right

????private?short?drawOrder[]?=?{0?1?2?3};?//?頂點(diǎn)的繪制順序?這樣的順序執(zhí)行才是2個(gè)點(diǎn)之間互聯(lián)??形成一個(gè)矩形
????//?設(shè)置圖形的RGB值和透明度
????float?color[]?=?{0.0f?0.0f?0.0f?0.0f};//?設(shè)置三角形顏色和透明度（rgba）