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[DEV] tutorial 14 'basic terrain' implementation

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This commit is contained in:
Edouard DUPIN 2020-04-20 01:19:21 +02:00
parent 9b423bd52a
commit 36dd2f7612
16 changed files with 141804 additions and 170 deletions
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# Blender v2.67 (sub 0) OBJ File: ''
# www.blender.org
o Cube
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src/engineTester/MainGameLoop.java
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@ -19,8 +19,9 @@ import renderEngine.DisplayManagerDraw;
import renderEngine.Loader; import renderEngine.Loader;
import renderEngine.MasterRenderer; import renderEngine.MasterRenderer;
import renderEngine.OBJLoader; import renderEngine.OBJLoader;
import renderEngine.Renderer; import renderEngine.EntityRenderer;
import shaders.StaticShader; import shaders.StaticShader;
import terrains.Terrain;
import textures.ModelTexture; import textures.ModelTexture;
/** /**
@ -46,25 +47,24 @@ public class MainGameLoop {
RawModel model = OBJLoader.loadObjModel("cube", loader); RawModel model = OBJLoader.loadObjModel("tree", loader);
TexturedModel cubeModel = new TexturedModel(model, new ModelTexture(loader.loadTexture("tree_sample"))); TexturedModel staticModel = new TexturedModel(model, new ModelTexture(loader.loadTexture("tree")));
ModelTexture texture = cubeModel.getTexture(); ModelTexture texture = staticModel.getTexture();
texture.setShineDamper(10); texture.setShineDamper(10);
texture.setReflectivity(1); texture.setReflectivity(1);
Light light = new Light(new Vector3f(0,0,-20), new Vector3f(1,1,1)); Light light = new Light(new Vector3f(3000,2000,2000), new Vector3f(1,1,1));
Terrain terrain = new Terrain(0,-1,loader, new ModelTexture(loader.loadTexture("grass")));
Terrain terrain2 = new Terrain(-1,-1,loader, new ModelTexture(loader.loadTexture("grass")));
Camera camera = new Camera(); Camera camera = new Camera();
List<Entity> allCubes = new ArrayList<Entity>(); List<Entity> entities = new ArrayList<Entity>();
Random random = new Random(); Random random = new Random();
for (int iii=0; iii<2000; iii++) { for (int iii=0; iii<2000; iii++) {
float x = random.nextFloat() * 300 - 150; entities.add(new Entity(staticModel, new Vector3f(random.nextFloat()*800 - 400,0,random.nextFloat() * -600),new Vector3f(0,0,0),3));
float y = random.nextFloat() * 300 - 150;
float z = random.nextFloat() * -300;
allCubes.add(new Entity(cubeModel, new Vector3f(x,y,z),
new Vector3f(random.nextFloat()*3.14f,random.nextFloat()*3.14f,0), 1));
} }
MasterRenderer renderer = new MasterRenderer(); MasterRenderer renderer = new MasterRenderer();
@ -75,9 +75,11 @@ public class MainGameLoop {
//entity.increaseRotation(0, 0, 0.01f); //entity.increaseRotation(0, 0, 0.01f);
//entity.increaseRotation(0.01f, 0.02f, 0.0f); //entity.increaseRotation(0.01f, 0.02f, 0.0f);
camera.move(); camera.move();
for (Entity cube : allCubes) { for (Entity entity : entities) {
renderer.processEntity(cube); renderer.processEntity(entity);
} }
renderer.processTerrain(terrain);
renderer.processTerrain(terrain2);
renderer.render(light, camera); renderer.render(light, camera);
} }
}); });

8
src/entities/Camera.java
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@ -5,10 +5,10 @@ import javax.vecmath.Vector3f;
import renderEngine.DisplayManager; import renderEngine.DisplayManager;
public class Camera { public class Camera {
private Vector3f position = new Vector3f(0,0,0); private Vector3f position = new Vector3f(0,5,0);
private float pitch; private float pitch = 0;// = (float) Math.toRadians(10);
private float yaw; private float yaw = 0;
private float roll; private float roll = 0;
public Camera() { public Camera() {

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src/renderEngine/EntityRenderer.java Normal file
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@ -0,0 +1,80 @@
package renderEngine;
import java.util.List;
import java.util.Map;
import javax.vecmath.Matrix4f;
import javax.vecmath.Vector2f;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL20;
import org.lwjgl.opengl.GL30;
import org.lwjgl.system.windows.DISPLAY_DEVICE;
import entities.Entity;
import models.RawModel;
import models.TexturedModel;
import shaders.StaticShader;
import textures.ModelTexture;
import toolbox.Maths;
/**
* Handles the rendering of a model to the screen.
*
* @author Karl
*
*/
public class EntityRenderer {
private StaticShader shader;
public EntityRenderer(StaticShader shader, Matrix4f projectionMatrix) {
this.shader = shader;
shader.start();
shader.loadProjectionMatrix(projectionMatrix);
shader.stop();
}
public void render(Map<TexturedModel, List<Entity>> entities) {
for (TexturedModel model:entities.keySet()) {
prepareTexturedModel(model);
List<Entity> batch = entities.get(model);
for (Entity entity:batch) {
prepareInstance(entity);
GL11.glDrawElements(GL11.GL_TRIANGLES, model.getRawModel().getVertexCount(), GL11.GL_UNSIGNED_INT, 0);
}
unbindTexturedModel();
}
}
private void prepareTexturedModel(TexturedModel model) {
RawModel rawModel = model.getRawModel();
GL30.glBindVertexArray(rawModel.getVaoID());
GL20.glEnableVertexAttribArray(0);
GL20.glEnableVertexAttribArray(1);
GL20.glEnableVertexAttribArray(2);
ModelTexture texture = model.getTexture();
shader.loadShineVariable(texture.getShineDamper(), texture.getReflectivity());
GL13.glActiveTexture(GL13.GL_TEXTURE0);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, model.getTexture().getTexturedID());
}
private void unbindTexturedModel() {
GL20.glDisableVertexAttribArray(0);
GL20.glDisableVertexAttribArray(1);
GL20.glDisableVertexAttribArray(2);
GL30.glBindVertexArray(0);
}
private void prepareInstance(Entity entity) {
Matrix4f transformationMatrix = Maths.createTransformationMatrix(entity.getPosition(), entity.getRotation(), entity.getScale());
shader.loadTransformationMatrix(transformationMatrix);
}
}

105
src/renderEngine/MasterRenderer.java
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@ -5,26 +5,61 @@ import java.util.HashMap;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import javax.vecmath.Matrix4f;
import javax.vecmath.Vector2f;
import org.lwjgl.opengl.GL11;
import entities.Camera; import entities.Camera;
import entities.Entity; import entities.Entity;
import entities.Light; import entities.Light;
import models.TexturedModel; import models.TexturedModel;
import shaders.StaticShader; import shaders.StaticShader;
import shaders.TerrainShader;
import terrains.Terrain;
public class MasterRenderer { public class MasterRenderer {
private static final float FOV = 70;
private static final float NEAR_PLANE = 0.1f;
private static final float FAR_PLANE = 10000;
private Matrix4f projectionMatrix;
private StaticShader shader = new StaticShader(); private StaticShader shader = new StaticShader();
private Renderer renderer = new Renderer(shader); private EntityRenderer renderer;
private TerrainRenderer terrainRenderer;
private TerrainShader terrainShader = new TerrainShader();
private Map<TexturedModel, List<Entity>> entities = new HashMap<TexturedModel, List<Entity>>(); private Map<TexturedModel, List<Entity>> entities = new HashMap<TexturedModel, List<Entity>>();
private List<Terrain> terrains = new ArrayList<Terrain>();
public MasterRenderer() {
GL11.glEnable(GL11.GL_CULL_FACE);
GL11.glEnable(GL11.GL_BACK);
createProjectionMatrix();
renderer = new EntityRenderer(shader, projectionMatrix);
terrainRenderer = new TerrainRenderer(terrainShader, projectionMatrix);
}
public void render(Light sun, Camera camera) { public void render(Light sun, Camera camera) {
renderer.prepare(); prepare();
shader.start(); shader.start();
shader.loadLight(sun); shader.loadLight(sun);
shader.loadViewMatrix(camera); shader.loadViewMatrix(camera);
renderer.render(entities); renderer.render(entities);
shader.stop(); shader.stop();
entities.clear(); entities.clear();
terrainShader.start();
terrainShader.loadLight(sun);
terrainShader.loadViewMatrix(camera);
terrainRenderer.render(terrains);
terrainShader.stop();
terrains.clear();
}
public void processTerrain(Terrain terrain) {
terrains.add(terrain);
} }
public void processEntity(Entity entity) { public void processEntity(Entity entity) {
@ -38,8 +73,74 @@ public class MasterRenderer {
entities.put(entityModel, newBatch); entities.put(entityModel, newBatch);
} }
} }
public void prepare() {
GL11.glEnable(GL11.GL_DEPTH_TEST);
GL11.glClearColor(1, 0, 0, 1);
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT|GL11.GL_DEPTH_BUFFER_BIT);
}
public void cleanUp () { public void cleanUp () {
shader.cleanUp(); shader.cleanUp();
terrainShader.cleanUp();
} }
private void createProjectionMatrix() {
//float aspectRatio = (float) Display.getWidth() / (float) Display.getHeight();
Vector2f windowsSize = DisplayManager.getSize();
float aspectRatio = windowsSize.x / windowsSize.y;
// float y_scale = (float) ((1f/Math.atan(Math.toRadians(FOV/2f))) * aspectRatio);
// float x_scale = y_scale / aspectRatio;
// float frustrum_length = FAR_PLANE - NEAR_PLANE;
//
// projectionMatrix = new Matrix4f();
// projectionMatrix.m00 = x_scale;
// projectionMatrix.m11 = y_scale;
// projectionMatrix.m22 = -((FAR_PLANE + NEAR_PLANE) / frustrum_length);
// projectionMatrix.m23 = -1;;
// projectionMatrix.m32 = -((2*FAR_PLANE * NEAR_PLANE) / frustrum_length);
// projectionMatrix.m33 = 0;
projectionMatrix = matPerspective(FOV, aspectRatio, NEAR_PLANE, FAR_PLANE);
}
Matrix4f matFrustum(float xmin, float xmax, float ymin, float ymax, float zNear, float zFar) {
Matrix4f tmp = new Matrix4f();
// 0 1 2 3
// 4 5 6 7
// 8 9 10 11
// 12 13 14 15
tmp.m00 = (2.0f * zNear) / (xmax - xmin);
tmp.m11 = (2.0f * zNear) / (ymax - ymin);
tmp.m22 = -(zFar + zNear) / (zFar - zNear);
tmp.m02 = (xmax + xmin) / (xmax - xmin);
tmp.m12 = (ymax + ymin) / (ymax - ymin);
tmp.m32 = -1.0f;
tmp.m23 = -(2.0f * zFar * zNear) / (zFar - zNear);
return tmp;
}
Matrix4f matPerspective(float fovx, float aspect, float zNear, float zFar) {
//TK_DEBUG("drax perspective: fovx=" << fovx << "->" << aspect << " " << zNear << "->" << zFar);
float xmax = zNear * (float)Math.atan(fovx/2.0);
float xmin = -xmax;
float ymin = xmin / aspect;
float ymax = xmax / aspect;
//TK_DEBUG("drax perspective: " << xmin << "->" << xmax << " & " << ymin << "->" << ymax << " " << zNear << "->" << zFar);
return matFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
}
Matrix4f matOrtho(float left, float right, float bottom, float top, float nearVal, float farVal) {
Matrix4f tmp = new Matrix4f();
tmp.m00 = 2.0f / (right - left);
tmp.m11 = 2.0f / (top - bottom);
tmp.m22 = -2.0f / (farVal - nearVal);
tmp.m03 = -1*(right + left) / (right - left);
tmp.m13 = -1*(top + bottom) / (top - bottom);
tmp.m23 = -1*(farVal + nearVal) / (farVal - nearVal);
tmp.m33 = 1;
return tmp;
}
} }

150
src/renderEngine/Renderer.java
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@ -1,150 +0,0 @@
package renderEngine;
import java.util.List;
import java.util.Map;
import javax.vecmath.Matrix4f;
import javax.vecmath.Vector2f;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL20;
import org.lwjgl.opengl.GL30;
import org.lwjgl.system.windows.DISPLAY_DEVICE;
import entities.Entity;
import models.RawModel;
import models.TexturedModel;
import shaders.StaticShader;
import textures.ModelTexture;
import toolbox.Maths;
/**
* Handles the rendering of a model to the screen.
*
* @author Karl
*
*/
public class Renderer {
private static final float FOV = 70;
private static final float NEAR_PLANE = 0.1f;
private static final float FAR_PLANE = 10000;
private Matrix4f projectionMatrix;
private StaticShader shader;
public Renderer(StaticShader shader) {
this.shader = shader;
createProjectionMatrix();
shader.start();
shader.loadProjectionMatrix(projectionMatrix);
shader.stop();
}
public void prepare() {
GL11.glEnable(GL11.GL_CULL_FACE);
GL11.glEnable(GL11.GL_BACK);
GL11.glEnable(GL11.GL_DEPTH_TEST);
GL11.glClearColor(1, 0, 0, 1);
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT|GL11.GL_DEPTH_BUFFER_BIT);
}
public void render(Map<TexturedModel, List<Entity>> entities) {
for (TexturedModel model:entities.keySet()) {
prepareTexturedModel(model);
List<Entity> batch = entities.get(model);
for (Entity entity:batch) {
prepareInstance(entity);
GL11.glDrawElements(GL11.GL_TRIANGLES, model.getRawModel().getVertexCount(), GL11.GL_UNSIGNED_INT, 0);
}
unbindTexturedModel();
}
}
private void prepareTexturedModel(TexturedModel model) {
RawModel rawModel = model.getRawModel();
GL30.glBindVertexArray(rawModel.getVaoID());
GL20.glEnableVertexAttribArray(0);
GL20.glEnableVertexAttribArray(1);
GL20.glEnableVertexAttribArray(2);
ModelTexture texture = model.getTexture();
shader.loadShineVariable(texture.getShineDamper(), texture.getReflectivity());
GL13.glActiveTexture(GL13.GL_TEXTURE0);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, model.getTexture().getTexturedID());
}
private void unbindTexturedModel() {
GL20.glDisableVertexAttribArray(0);
GL20.glDisableVertexAttribArray(1);
GL20.glDisableVertexAttribArray(2);
GL30.glBindVertexArray(0);
}
private void prepareInstance(Entity entity) {
Matrix4f transformationMatrix = Maths.createTransformationMatrix(entity.getPosition(), entity.getRotation(), entity.getScale());
shader.loadTransformationMatrix(transformationMatrix);
}
private void createProjectionMatrix() {
//float aspectRatio = (float) Display.getWidth() / (float) Display.getHeight();
Vector2f windowsSize = DisplayManager.getSize();
float aspectRatio = windowsSize.x / windowsSize.y;
// float y_scale = (float) ((1f/Math.atan(Math.toRadians(FOV/2f))) * aspectRatio);
// float x_scale = y_scale / aspectRatio;
// float frustrum_length = FAR_PLANE - NEAR_PLANE;
//
// projectionMatrix = new Matrix4f();
// projectionMatrix.m00 = x_scale;
// projectionMatrix.m11 = y_scale;
// projectionMatrix.m22 = -((FAR_PLANE + NEAR_PLANE) / frustrum_length);
// projectionMatrix.m23 = -1;;
// projectionMatrix.m32 = -((2*FAR_PLANE * NEAR_PLANE) / frustrum_length);
// projectionMatrix.m33 = 0;
projectionMatrix = matPerspective(FOV, aspectRatio, NEAR_PLANE, FAR_PLANE);
}
Matrix4f matFrustum(float xmin, float xmax, float ymin, float ymax, float zNear, float zFar) {
Matrix4f tmp = new Matrix4f();
// 0 1 2 3
// 4 5 6 7
// 8 9 10 11
// 12 13 14 15
tmp.m00 = (2.0f * zNear) / (xmax - xmin);
tmp.m11 = (2.0f * zNear) / (ymax - ymin);
tmp.m22 = -(zFar + zNear) / (zFar - zNear);
tmp.m02 = (xmax + xmin) / (xmax - xmin);
tmp.m12 = (ymax + ymin) / (ymax - ymin);
tmp.m32 = -1.0f;
tmp.m23 = -(2.0f * zFar * zNear) / (zFar - zNear);
return tmp;
}
Matrix4f matPerspective(float fovx, float aspect, float zNear, float zFar) {
//TK_DEBUG("drax perspective: fovx=" << fovx << "->" << aspect << " " << zNear << "->" << zFar);
float xmax = zNear * (float)Math.atan(fovx/2.0);
float xmin = -xmax;
float ymin = xmin / aspect;
float ymax = xmax / aspect;
//TK_DEBUG("drax perspective: " << xmin << "->" << xmax << " & " << ymin << "->" << ymax << " " << zNear << "->" << zFar);
return matFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
}
Matrix4f matOrtho(float left, float right, float bottom, float top, float nearVal, float farVal) {
Matrix4f tmp = new Matrix4f();
tmp.m00 = 2.0f / (right - left);
tmp.m11 = 2.0f / (top - bottom);
tmp.m22 = -2.0f / (farVal - nearVal);
tmp.m03 = -1*(right + left) / (right - left);
tmp.m13 = -1*(top + bottom) / (top - bottom);
tmp.m23 = -1*(farVal + nearVal) / (farVal - nearVal);
tmp.m33 = 1;
return tmp;
}
}

65
src/renderEngine/TerrainRenderer.java Normal file
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@ -0,0 +1,65 @@
package renderEngine;
import java.util.List;
import javax.vecmath.Matrix4f;
import javax.vecmath.Vector3f;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL20;
import org.lwjgl.opengl.GL30;
import models.RawModel;
import shaders.TerrainShader;
import terrains.Terrain;
import textures.ModelTexture;
import toolbox.Maths;
public class TerrainRenderer {
private TerrainShader shader;
public TerrainRenderer(TerrainShader shader, Matrix4f projectionMatrix) {
this.shader = shader;
shader.start();
shader.loadProjectionMatrix(projectionMatrix);
shader.stop();
}
public void render(List<Terrain> terrains) {
for (Terrain terrain : terrains) {
prepareTerrain(terrain);
loadModelMatrix(terrain);
GL11.glDrawElements(GL11.GL_TRIANGLES, terrain.getModel().getVertexCount(),
GL11.GL_UNSIGNED_INT, 0);
unbindTexturedModel();
}
}
private void prepareTerrain(Terrain terrain) {
RawModel rawModel = terrain.getModel();
GL30.glBindVertexArray(rawModel.getVaoID());
GL20.glEnableVertexAttribArray(0);
GL20.glEnableVertexAttribArray(1);
GL20.glEnableVertexAttribArray(2);
ModelTexture texture = terrain.getTexture();
shader.loadShineVariable(texture.getShineDamper(), texture.getReflectivity());
GL13.glActiveTexture(GL13.GL_TEXTURE0);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture.getTexturedID());
}
private void unbindTexturedModel() {
GL20.glDisableVertexAttribArray(0);
GL20.glDisableVertexAttribArray(1);
GL20.glDisableVertexAttribArray(2);
GL30.glBindVertexArray(0);
}
private void loadModelMatrix(Terrain terrain) {
Matrix4f transformationMatrix = Maths.createTransformationMatrix(
new Vector3f(terrain.getX(), 0, terrain.getZ()), new Vector3f(0, 0, 0), 1);
shader.loadTransformationMatrix(transformationMatrix);
}
}

60
src/shaders/TerrainShader.java Normal file
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@ -0,0 +1,60 @@
package shaders;
import javax.vecmath.Matrix4f;
import entities.Camera;
import entities.Light;
import toolbox.Maths;
public class TerrainShader extends ShaderProgram {
private static final String VERTEX_FILE = "src/shaders/terrainVertexShader.txt";
private static final String FRAGMENT_FILE = "src/shaders/terrainFragmentShader.txt";
private int location_transformationMatrix;
private int location_projectionMatrix;
private int location_viewMatrix;
private int location_lightPosition;
private int location_lightColour;
private int location_reflectivity;
private int location_shineDamper;
public TerrainShader() {
super(VERTEX_FILE, FRAGMENT_FILE);
}
@Override
protected void bindAttributes() {
super.bindAttribute(0, "position");
super.bindAttribute(1, "textureCoords");
super.bindAttribute(2, "normal");
}
@Override
protected void getAllUniformLocations() {
location_transformationMatrix = super.getUniformLocation("transformationMatrix");
location_projectionMatrix = super.getUniformLocation("projectionMatrix");
location_viewMatrix = super.getUniformLocation("viewMatrix");
location_lightPosition = super.getUniformLocation("lightPosition");
location_lightColour = super.getUniformLocation("lightColour");
location_reflectivity = super.getUniformLocation("reflectivity");
location_shineDamper = super.getUniformLocation("shineDamper");
}
public void loadShineVariable(float shineDamper, float reflectivity) {
super.loadFloat(location_reflectivity, reflectivity);
super.loadFloat(location_shineDamper, shineDamper);
}
public void loadTransformationMatrix(Matrix4f matrix) {
super.loadMatrix(location_transformationMatrix, matrix);
}
public void loadLight(Light light) {
super.loadVector(location_lightPosition, light.getPosition());
super.loadVector(location_lightColour, light.getColour());
}
public void loadProjectionMatrix(Matrix4f projection) {
super.loadMatrix(location_projectionMatrix, projection);
}
public void loadViewMatrix(Camera camera) {
super.loadMatrix(location_viewMatrix, Maths.createViewMatrix(camera));
}
}

37
src/shaders/terrainFragmentShader.txt Normal file
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@ -0,0 +1,37 @@
#version 400 core
in vec2 pass_textureCoords;
in vec3 surfaceNormal;
in vec3 toLightVector;
in vec3 toCameraVector;
out vec4 out_Color;
uniform sampler2D textureSampler;
uniform vec3 lightColour;
uniform float reflectivity;
uniform float shineDamper;
void main(void) {
vec3 unitNormal = normalize(surfaceNormal);
vec3 unitLightVector = normalize(toLightVector);
float nDot1 = dot(unitNormal, unitLightVector);
// the 0.2 represent the anbiant lightning ==> maybe set an uniform for this
float brightness = max(nDot1, 0.2);
vec3 diffuse = brightness * lightColour;
vec3 unitVectorToCamera = normalize(toCameraVector);
vec3 lightDirection = -unitLightVector;
vec3 reflectedLightDirection = reflect(lightDirection, unitNormal);
float specularFactor = dot(reflectedLightDirection, unitVectorToCamera);
specularFactor = max(specularFactor, 0.0);
float damperFactor = pow(specularFactor, shineDamper);
vec3 finalSpecular = damperFactor * reflectivity * lightColour;
out_Color = vec4(diffuse,1.0) * texture(textureSampler,pass_textureCoords) + vec4(finalSpecular, 1.0);
}

26
src/shaders/terrainVertexShader.txt Normal file
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@ -0,0 +1,26 @@
#version 400 core
in vec3 position;
in vec2 textureCoords;
in vec3 normal;
out vec2 pass_textureCoords;
out vec3 surfaceNormal;
out vec3 toLightVector;
out vec3 toCameraVector;
uniform mat4 transformationMatrix;
uniform mat4 projectionMatrix;
uniform mat4 viewMatrix;
uniform vec3 lightPosition;
void main(void) {
vec4 worldPosition = transformationMatrix * vec4(position, 1.0);
gl_Position = projectionMatrix * viewMatrix * worldPosition;
pass_textureCoords = textureCoords;
surfaceNormal = (transformationMatrix * vec4(normal, 0.0)).xyz;
toLightVector = lightPosition - worldPosition.xyz;
toCameraVector = (inverse(viewMatrix) * vec4(0.0,0.0,0.0,1.0)).xyz - worldPosition.xyz;
}

92
src/terrains/Terrain.java Normal file
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@ -0,0 +1,92 @@
package terrains;
import models.RawModel;
import renderEngine.Loader;
import textures.ModelTexture;
public class Terrain {
private static final float SIZE = 800;
private static final int VERTEX_COUNT = 128;
private float x;
private float z;
private RawModel model;
private ModelTexture texture;
public Terrain(int girdX, int girdZ, Loader loader, ModelTexture texture) {
this.texture = texture;
this.x = girdX * SIZE;
this.z = girdZ * SIZE;
this.model = generateTerrain(loader);
}
private RawModel generateTerrain(Loader loader){
int count = VERTEX_COUNT * VERTEX_COUNT;
float[] vertices = new float[count * 3];
float[] normals = new float[count * 3];
float[] textureCoords = new float[count*2];
int[] indices = new int[6*(VERTEX_COUNT-1)*(VERTEX_COUNT-1)];
int vertexPointer = 0;
for(int i=0;i<VERTEX_COUNT;i++){
for(int j=0;j<VERTEX_COUNT;j++){
vertices[vertexPointer*3] = (float)j/((float)VERTEX_COUNT - 1) * SIZE;
vertices[vertexPointer*3+1] = 0;
vertices[vertexPointer*3+2] = (float)i/((float)VERTEX_COUNT - 1) * SIZE;
normals[vertexPointer*3] = 0;
normals[vertexPointer*3+1] = 1;
normals[vertexPointer*3+2] = 0;
textureCoords[vertexPointer*2] = (float)j/((float)VERTEX_COUNT - 1);
textureCoords[vertexPointer*2+1] = (float)i/((float)VERTEX_COUNT - 1);
vertexPointer++;
}
}
int pointer = 0;
for(int gz=0;gz<VERTEX_COUNT-1;gz++){
for(int gx=0;gx<VERTEX_COUNT-1;gx++){
int topLeft = (gz*VERTEX_COUNT)+gx;
int topRight = topLeft + 1;
int bottomLeft = ((gz+1)*VERTEX_COUNT)+gx;
int bottomRight = bottomLeft + 1;
indices[pointer++] = topLeft;
indices[pointer++] = bottomLeft;
indices[pointer++] = topRight;
indices[pointer++] = topRight;
indices[pointer++] = bottomLeft;
indices[pointer++] = bottomRight;
}
}
return loader.loadToVAO(vertices, textureCoords, normals, indices);
}
public float getX() {
return x;
}
public void setX(float x) {
this.x = x;
}
public float getZ() {
return z;
}
public void setZ(float z) {
this.z = z;
}
public RawModel getModel() {
return model;
}
public void setModel(RawModel model) {
this.model = model;
}
public ModelTexture getTexture() {
return texture;
}
public void setTexture(ModelTexture texture) {
this.texture = texture;
}
}