/
LoadModelTextureRenderer.java
270 lines (232 loc) · 13 KB
/
LoadModelTextureRenderer.java
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package com.chends.opengl.renderer.model;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.opengl.GLES20;
import android.opengl.Matrix;
import android.os.SystemClock;
import android.renderscript.Matrix4f;
import android.text.TextUtils;
import com.chends.opengl.R;
import com.chends.opengl.model.model.ObjectBean;
import com.chends.opengl.renderer.BaseRenderer;
import com.chends.opengl.utils.LogUtil;
import com.chends.opengl.utils.OpenGLUtil;
import com.chends.opengl.utils.model.LoadObjectUtil;
import java.io.IOException;
import java.util.List;
import javax.microedition.khronos.opengles.GL10;
/**
* @author chends create on 2020/1/4.
*/
public class LoadModelTextureRenderer extends BaseRenderer {
private String dir = "nanosuit";
public LoadModelTextureRenderer(Context context) {
super(context);
bg = Color.GRAY;
list = LoadObjectUtil.loadObject(dir + "/nanosuit.obj", context.getResources(), dir);
vertexShaderCode = OpenGLUtil.getShaderFromResources(context, R.raw.model_texture_load_vertex);
fragmentShaderCode = OpenGLUtil.getShaderFromResources(context, R.raw.model_texture_load_fragment);
color = new float[]{1f, 1f, 1f, 1f};
vertexLightShaderCode =
"uniform mat4 uMVPMatrix;" +
"attribute vec3 aPosition;" +
"attribute vec3 aColor;" +
"varying vec4 resultColor;" +
"void main() {" +
" gl_Position = uMVPMatrix * vec4(aPosition, 1.0);" +
" gl_PointSize = 25.0;" +
" resultColor = vec4(aColor, 1.0);" +
"}";
fragmentLightShaderCode =
"precision mediump float;" +
"varying vec4 resultColor;" +
"void main() {" +
" gl_FragColor = resultColor;" +
"}";
}
private final float[] mMVPMatrix = new float[16], projectionMatrix = new float[16],
viewMatrix = new float[16], modelMatrix = new float[16],
mLightMVPMatrix = new float[16], mLightModelMatrix = new float[16];
private float angle = 0;
private List<ObjectBean> list;
private String vertexLightShaderCode, fragmentLightShaderCode;
private float[] mLightPosInModelSpace = new float[]{0f, 0f, 5f, 1f};
private final float[] mLightPosInWorldSpace = new float[4], mLightPosInEyeSpace = new float[4];
private float[] mViewPos = new float[]{0f, 0f, 12f, 1f};
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
super.onSurfaceChanged(gl, width, height);
float ratio = (float) width / height;
Matrix.frustumM(projectionMatrix, 0, -ratio, ratio, -1, 1, 1f, 1200f);
Matrix.setLookAtM(viewMatrix, 0, mViewPos[0], mViewPos[1], mViewPos[2],
0f, 0f, 0f,
0f, 1.0f, 0.0f);
}
@Override
public void onDrawFrame(GL10 gl) {
super.onDrawFrame(gl);
angle = (360.0f / 10000.0f) * (SystemClock.uptimeMillis() % 10000L);
Matrix.setIdentityM(mLightModelMatrix, 0);
//Matrix.translateM(mLightModelMatrix, 0, 0.0f, 0.0f, 1.0f);
Matrix.rotateM(mLightModelMatrix, 0, angle, 0.0f, 1.0f, 0.0f);
//Matrix.translateM(mLightModelMatrix, 0, 0.0f, 0.0f, 1.0f);
Matrix.multiplyMV(mLightPosInWorldSpace, 0, mLightModelMatrix, 0, mLightPosInModelSpace, 0);
Matrix.multiplyMV(mLightPosInEyeSpace, 0, viewMatrix, 0, mLightPosInWorldSpace, 0);
Matrix.setIdentityM(modelMatrix, 0);
Matrix.translateM(modelMatrix, 0, 0f, -12.0f, 0.0f);
//Matrix.rotateM(modelMatrix, 0, -90, 1.0f, 0.0f, 0.0f);
drawModel();
drawLight();
}
/**
* 绘制物体
*/
private void drawModel() {
int shaderProgram = OpenGLUtil.createProgram(vertexShaderCode, fragmentShaderCode, new String[]{
"aPosition", "aNormal", "aTexCoords"});
GLES20.glUseProgram(shaderProgram);
// 顶点坐标
int positionHandle = GLES20.glGetAttribLocation(shaderProgram, "aPosition");
// 法向量
int normalHandle = GLES20.glGetAttribLocation(shaderProgram, "aNormal");
int textHandle = GLES20.glGetAttribLocation(shaderProgram, "aTexCoords");
int mMVMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVMatrix");
int mMVPMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVPMatrix");
int mNormalPosHandle = GLES20.glGetUniformLocation(shaderProgram, "normalMatrix");
Matrix.multiplyMM(mMVPMatrix, 0, viewMatrix, 0, modelMatrix, 0);
GLES20.glUniformMatrix4fv(mMVMatrixHandle, 1, false, mMVPMatrix, 0);
Matrix.multiplyMM(mMVPMatrix, 0, projectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
final Matrix4f normalMatrix = new Matrix4f();
normalMatrix.loadMultiply(new Matrix4f(viewMatrix), new Matrix4f(modelMatrix));
normalMatrix.inverse();
normalMatrix.transpose();
GLES20.glUniformMatrix4fv(mNormalPosHandle, 1, false, normalMatrix.getArray(), 0);
int materialAmbientPosHandle = GLES20.glGetUniformLocation(shaderProgram, "material.ambient");
int materialDiffusePosHandle = GLES20.glGetUniformLocation(shaderProgram, "material.diffuse");
int materialSpecularPosHandle = GLES20.glGetUniformLocation(shaderProgram, "material.specular");
int materialShininessPosHandle = GLES20.glGetUniformLocation(shaderProgram, "material.shininess");
int materialAlphaPosHandle = GLES20.glGetUniformLocation(shaderProgram, "material.alpha");
int lightPosHandle = GLES20.glGetUniformLocation(shaderProgram, "light.position");
int lightAmbientPosHandle = GLES20.glGetUniformLocation(shaderProgram, "light.ambient");
int lightDiffusePosHandle = GLES20.glGetUniformLocation(shaderProgram, "light.diffuse");
int lightSpecularPosHandle = GLES20.glGetUniformLocation(shaderProgram, "light.specular");
GLES20.glUniform3f(lightPosHandle, mLightPosInEyeSpace[0], mLightPosInEyeSpace[1], mLightPosInEyeSpace[2]);
GLES20.glUniform3f(lightAmbientPosHandle, 0.5f * color[0], 0.5f * color[1], 0.5f * color[2]);
GLES20.glUniform3f(lightDiffusePosHandle, 0.6f * color[0], 0.6f * color[1], 0.6f * color[2]);
GLES20.glUniform3f(lightSpecularPosHandle, 1.0f, 1.0f, 1.0f);
if (list != null && !list.isEmpty()) {
for (ObjectBean item : list) {
if (item != null) {
GLES20.glEnableVertexAttribArray(positionHandle);
GLES20.glVertexAttribPointer(positionHandle, 3, GLES20.GL_FLOAT,
false, 3 * 4, OpenGLUtil.createFloatBuffer(item.aVertices));
GLES20.glEnableVertexAttribArray(normalHandle);
GLES20.glVertexAttribPointer(normalHandle, 3, GLES20.GL_FLOAT,
false, 3 * 4, OpenGLUtil.createFloatBuffer(item.aNormals));
GLES20.glEnableVertexAttribArray(textHandle);
GLES20.glVertexAttribPointer(textHandle, 2, GLES20.GL_FLOAT,
false, 2 * 4, OpenGLUtil.createFloatBuffer(item.aTexCoords));
if (item.mtl != null) {
if (!TextUtils.isEmpty(item.mtl.Kd_Texture)) {
if (item.diffuse < 0) {
try {
Bitmap bitmap = BitmapFactory.decodeStream(context.getAssets().open(
dir + "/" + item.mtl.Kd_Texture));
item.diffuse = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
} catch (IOException e) {
LogUtil.e(e);
}
}
} else{
if (item.diffuse < 0) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_default_texture);
item.diffuse = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
}
}
if (TextUtils.equals(item.mtl.Kd_Texture, item.mtl.Ka_Texture)) {
// 相同
item.ambient = item.diffuse;
} else {
if (!TextUtils.isEmpty(item.mtl.Ka_Texture)) {
if (item.ambient < 0) {
try {
Bitmap bitmap = BitmapFactory.decodeStream(context.getAssets().open(
dir + "/" + item.mtl.Ka_Texture));
item.ambient = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
} catch (IOException e) {
LogUtil.e(e);
}
}
} else{
if (item.ambient < 0) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_default_texture);
item.ambient = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
}
}
}
OpenGLUtil.bindTexture(materialAmbientPosHandle, item.ambient, 0);
OpenGLUtil.bindTexture(materialDiffusePosHandle, item.diffuse, 0);
if (!TextUtils.isEmpty(item.mtl.Ks_Texture)) {
if (item.specular < 0) {
try {
Bitmap bitmap = BitmapFactory.decodeStream(context.getAssets().open(
dir + "/" + item.mtl.Ks_Texture));
item.specular = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
} catch (IOException e) {
LogUtil.e(e);
}
}
} else {
if (item.specular < 0) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_default_texture);
item.specular = OpenGLUtil.createTextureNormal(bitmap);
bitmap.recycle();
}
}
OpenGLUtil.bindTexture(materialSpecularPosHandle, item.specular, 1);
GLES20.glUniform1f(materialAlphaPosHandle, item.mtl.alpha);
GLES20.glUniform1f(materialShininessPosHandle, item.mtl.ns);
}
// 绘制顶点
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, item.aVertices.length / 3);
}
}
}
GLES20.glDisableVertexAttribArray(positionHandle);
GLES20.glDisableVertexAttribArray(normalHandle);
GLES20.glDisableVertexAttribArray(textHandle);
GLES20.glDeleteProgram(shaderProgram);
}
/**
* 绘制光源
*/
private void drawLight() {
// ---------- 绘制光源 ---------------
int lightProgram = OpenGLUtil.createProgram(vertexLightShaderCode, fragmentLightShaderCode);
GLES20.glUseProgram(lightProgram);
// 传入顶点坐标
int lightPositionHandle = GLES20.glGetAttribLocation(lightProgram, "aPosition");
int lightColorHandle = GLES20.glGetAttribLocation(lightProgram, "aColor");
GLES20.glEnableVertexAttribArray(lightPositionHandle);
GLES20.glVertexAttribPointer(lightPositionHandle, 3, GLES20.GL_FLOAT,
false, 3 * 4, OpenGLUtil.createFloatBuffer(mLightPosInModelSpace));
GLES20.glEnableVertexAttribArray(lightColorHandle);
GLES20.glVertexAttribPointer(lightColorHandle, 3, GLES20.GL_FLOAT,
false, 3 * 4, OpenGLUtil.createFloatBuffer(color));
Matrix.multiplyMM(mLightMVPMatrix, 0, viewMatrix, 0, mLightModelMatrix, 0);
Matrix.multiplyMM(mLightMVPMatrix, 0, projectionMatrix, 0, mLightMVPMatrix, 0);
int mMVPMatrixHandle = GLES20.glGetUniformLocation(lightProgram, "uMVPMatrix");
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mLightMVPMatrix, 0);
GLES20.glDrawArrays(GLES20.GL_POINTS, 0, 1);
GLES20.glDisableVertexAttribArray(lightPositionHandle);
GLES20.glDeleteProgram(lightProgram);
}
}