openGL es2.0 创建方向方体

喜欢ヅ旅行 2022-08-07 01:35 19阅读 0赞

package com.gzdxid.utils;
    
    public class DrawCubeTextureLight {
    
    	private DrawRectTextureLight frontRect = null;
    	private DrawRectTextureLight leftRect = null;
    	private DrawRectTextureLight bottomRect = null;
    	private int flag;
    	private float halfWidth;
    	private float halfHeight;
    	private float halfLength;
    	final float tzz = 0.1f;
    	final float tzs=0.0f;
    	// flag==0:法线朝里;flag==1:法线朝外;
    	public DrawCubeTextureLight(float width,float height,float length,int mProgram, int flag) {
    		frontRect = new DrawRectTextureLight(width, height,mProgram);
    		leftRect=new DrawRectTextureLight(height, length, mProgram);
    		bottomRect=new DrawRectTextureLight(width, length, mProgram);
    		this.flag = flag;
    		this.halfWidth=width/2;
    		this.halfHeight=height/2;
    		this.halfLength=length/2;
    	}
    
    	// textureId:up-down-left-right-front-back
    	public void drawSelf(int[] textureId) {
    		switch (flag) {
    		case 0:
    			drawCube0(textureId);
    			break;
    		case 1:
    			drawCube1(textureId);
    			break;
    		}
    	}
    
    	private void drawCube0(int[] textureId) {
    		// TODO Auto-generated method stub
    		// up
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, halfHeight - tzz, 0);
    		MatrixState.rotate(90, 1, 0, 0);
    		bottomRect.drawSelf(textureId[0]);
    		MatrixState.popMatrix();
    
    		// down
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, -halfHeight + tzz, 0);
    		MatrixState.rotate(-90, 1, 0, 0);
    		bottomRect.drawSelf(textureId[1]);
    		MatrixState.popMatrix();
    
    		// left
    		MatrixState.pushMatrix();
    		MatrixState.translate(-halfWidth + tzz, 0, 0);
    		MatrixState.rotate(90, 0, 1, 0);
    		leftRect.drawSelf(textureId[2]);
    		MatrixState.popMatrix();
    
    		// right
    		MatrixState.pushMatrix();
    		MatrixState.translate(halfWidth - tzz, 0, 0);
    		MatrixState.rotate(-90, 0, 1, 0);
    		leftRect.drawSelf(textureId[3]);
    		MatrixState.popMatrix();
    
    		// front
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, 0, halfLength - tzz);
    		MatrixState.rotate(180, 0, 1, 0);
    		frontRect.drawSelf(textureId[4]);
    		MatrixState.popMatrix();
    
    		// back
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, 0, -halfLength + tzz);
    		frontRect.drawSelf(textureId[5]);
    		MatrixState.popMatrix();
    
    	}
    
    	private void drawCube1(int[] textureId) {
    
    		// up
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, halfHeight - tzs, 0);
    		MatrixState.rotate(-90, 1, 0, 0);
    		bottomRect.drawSelf(textureId[0]);
    		MatrixState.popMatrix();
    
    		// down
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, -halfHeight + tzs, 0);
    		MatrixState.rotate(90, 1, 0, 0);
    		bottomRect.drawSelf(textureId[1]);
    		MatrixState.popMatrix();
    
    		// left
    		MatrixState.pushMatrix();
    		MatrixState.translate(-halfWidth + tzs, 0, 0);
    		MatrixState.rotate(-90, 0, 1, 0);
    		leftRect.drawSelf(textureId[3]);
    		MatrixState.popMatrix();
    
    		// right
    		MatrixState.pushMatrix();
    		MatrixState.translate(halfWidth - tzs, 0, 0);
    		MatrixState.rotate(90, 0, 1, 0);
    		leftRect.drawSelf(textureId[2]);
    		MatrixState.popMatrix();
    
    		// front
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, 0, halfLength - tzs);
    		frontRect.drawSelf(textureId[4]);
    		MatrixState.popMatrix();
    
    		// back
    		MatrixState.pushMatrix();
    		MatrixState.translate(0, 0, -halfLength + tzs);
    		MatrixState.rotate(180, 0, 1, 0);
    		frontRect.drawSelf(textureId[5]);
    		MatrixState.popMatrix();
    
    	}
    
    }