地形图开发中

未完成

FinalProject/FinalProject.vcxproj

@@ -115,6 +115,7 @@
     <ClCompile Include="sceneviewer.cpp" />
     <ClCompile Include="shader.cpp" />
     <ClCompile Include="skybox.cpp" />
+    <ClCompile Include="terrain.cpp" />
     <ClCompile Include="texture.cpp" />
     <ClCompile Include="vao.cpp" />
     <ClCompile Include="vbo.cpp" />
@@ -134,6 +135,7 @@
     <ClInclude Include="mesh.h" />
     <ClInclude Include="model.h" />
     <ClInclude Include="skybox.h" />
+    <ClInclude Include="terrain.h" />
     <ClInclude Include="texture.h" />
     <ClInclude Include="utils.h" />
     <ClInclude Include="vbo.h" />

FinalProject/FinalProject.vcxproj.filters

@@ -103,6 +103,9 @@
     <ClCompile Include="skybox.cpp">
       <Filter>Source Files\OpenGL Abstractions</Filter>
     </ClCompile>
+    <ClCompile Include="terrain.cpp">
+      <Filter>Source Files\OpenGL Abstractions</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="camera.h">
@@ -153,6 +156,9 @@
     <ClInclude Include="skybox.h">
       <Filter>Header Files\OpenGL Abstractions</Filter>
     </ClInclude>
+    <ClInclude Include="terrain.h">
+      <Filter>Header Files\OpenGL Abstractions</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <QtMoc Include="sceneviewer.h">

FinalProject/sceneviewer.cpp

@@ -75,6 +75,13 @@ void SceneViewer::initializeGL() {
     vertexShader_sky.dispose();
     fragmentShader_sky.dispose();
 
+    VertexShader vertexShader_ter("./temp/shaders/terrainShader.vs");
+    FragmentShader fragmentShader_ter("./temp/shaders/terrainShader.fs");
+    terrainShader.attachShader(vertexShader_ter);
+    terrainShader.attachShader(fragmentShader_ter);
+    vertexShader_ter.dispose();
+    fragmentShader_ter.dispose();
+
 
     Model* backpackModel = new Model("D:\\ProgrammingFile\\SceneEditor\\Models\\backpack\\backpack.obj");
     Logger::info("Model loaded");
@@ -82,6 +89,8 @@ void SceneViewer::initializeGL() {
     _objects.push_back(backpack);
 
     sky = new skybox("D:/ProgrammingFile/SceneEditor/skybox");
+
+    ter = new Terrain();
     
     _camera.setPosition(glm::vec3(0.0f, 0.0f, 5.0f));
 }
@@ -98,21 +107,36 @@ void SceneViewer::paintGL() {
     // Set view and projection matrices
     glm::mat4 view = _camera.viewMatrix();
     glm::mat4 projection = glm::perspective(glm::radians(_camera.zoomVal()), (float)width() / (float)height(), 0.1f, 100.0f);
-    _shaderProgram.setUniform("view", view);
+    /*_shaderProgram.setUniform("view", view);
     _shaderProgram.setUniform("projection", projection);
 
     for (auto object : _objects) {
         object.render(_shaderProgram);
-    }
+    }*/
 
     _shaderProgram.unbind();
 
-    skyShader.bind();
+    terrainShader.bind();
+    glm::mat4 Model = glm::mat4(1.0f);
+    Model = glm::translate(Model, glm::vec3(0.0f, 0.0f, -2.0f));
+    terrainShader.setUniform("view", view);
+    terrainShader.setUniform("projection", projection);
+    terrainShader.setUniform("model", Model);
+    terrainShader.setUniform("dep", 0);
+    terrainShader.setUniform("tex1", 1);
+    terrainShader.setUniform("tex2", 2);
+    ter->render();
+    terrainShader.unbind();
+
+
+    /*skyShader.bind();
     view = glm::mat4(glm::mat3(view));
     skyShader.setUniform("view", view);
     skyShader.setUniform("projection", projection);
     sky->render();
-    skyShader.unbind();
+    skyShader.unbind();*/
+
+
 }
 
 void SceneViewer::mousePressEvent(QMouseEvent* event) {

FinalProject/sceneviewer.h

@@ -13,6 +13,7 @@
 #include "vao.h"
 #include "utils.h"
 #include "skybox.h"
+#include "terrain.h"
 
 class SceneViewer : public QOpenGLWidget, protected QOpenGLFunctions
 {
@@ -25,7 +26,10 @@ private:
     // Shader program for objects
     ShaderProgram _shaderProgram = ShaderProgram::empty();
     ShaderProgram skyShader = ShaderProgram::empty();
+    ShaderProgram terrainShader = ShaderProgram::empty();
     skybox* sky;
+    Terrain* ter;
+
     // Main camera
     Camera _camera;
     float _cameraMovementSpeed = 0.02f;

FinalProject/terrain.cpp

@@ -0,0 +1,97 @@
+#include "terrain.h"
+#include "utils.h"
+
+#include <STBImage/stb_image.h>
+#include <vector>
+
+Terrain::Terrain(int rows, int cols):row_num(rows),col_num(cols) {
+    Vertex.clear();
+    Indicess.clear();
+    float x = -50, z = -50;
+
+    for (int i = 0; i < rows; i++) {
+        x = -5;
+        for (int j = 0; j < cols; j++) {
+            Vertex.push_back(x);
+            Vertex.push_back(0);
+            Vertex.push_back(z);
+            Vertex.push_back(1.0f / cols * j);
+            Vertex.push_back(1 - i * 1.0f / rows);
+            x += 0.1;
+        }
+        z += 0.1;
+    }
+
+    for (int i = 1; i < rows; i++) {
+        for (int j = 1; j < cols; j++) {
+            Indicess.push_back((i - 1) * cols + j - 1);
+            Indicess.push_back((i - 1) * cols + j);
+            Indicess.push_back(i * cols + j - 1);
+
+            Indicess.push_back(i * cols + j - 1);
+            Indicess.push_back((i - 1) * cols + j);
+            Indicess.push_back(i * cols + j);
+        }
+    }
+
+    tex1 = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/rock.jpg");
+    tex2 = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/water.jpg");
+    dep = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/heightmap.png");
+
+    OPENGL_EXTRA_FUNCTIONS->glGenVertexArrays(1, &TerrainVAO);
+    OPENGL_EXTRA_FUNCTIONS->glGenBuffers(1, &TerrainVBO);
+    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(TerrainVAO);
+    OPENGL_EXTRA_FUNCTIONS->glBindBuffer(GL_ARRAY_BUFFER, TerrainVBO);
+    OPENGL_EXTRA_FUNCTIONS->glBufferData(GL_ARRAY_BUFFER, sizeof(Vertex), &Vertex, GL_STATIC_DRAW);
+    OPENGL_EXTRA_FUNCTIONS->glEnableVertexAttribArray(0);
+    OPENGL_EXTRA_FUNCTIONS->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
+}
+
+unsigned int Terrain::loadTexture(std::string path) {
+    unsigned int textureID;
+    OPENGL_FUNCTIONS->glGenTextures(1, &textureID);
+    OPENGL_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, textureID);
+    stbi_set_flip_vertically_on_load(true);
+
+    int width, height, nrChannels;
+
+    unsigned char* data = stbi_load(path.c_str(), &width, &height, &nrChannels, 0);
+    if (data) {
+        GLenum format;
+        if (nrChannels == 1) {
+            format = GL_RED;
+        }
+        else if (nrChannels == 3) {
+            format = GL_RGB;
+        }
+        else if (nrChannels == 4) {
+            format = GL_RGBA;
+        }
+        else {
+            return 0;
+        }
+
+        OPENGL_FUNCTIONS->glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
+        OPENGL_FUNCTIONS->glGenerateMipmap(GL_TEXTURE_2D);
+    }
+
+    stbi_image_free(data);
+
+    return textureID;
+}
+
+void Terrain::render() {
+    OPENGL_EXTRA_FUNCTIONS->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+    OPENGL_EXTRA_FUNCTIONS->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE0);
+    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, dep);
+    OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE1);
+    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, tex1);
+    OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE2);
+    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, tex2);
+
+    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(TerrainVAO);
+    OPENGL_EXTRA_FUNCTIONS->glDrawElements(GL_TRIANGLES, Indicess.size(), GL_UNSIGNED_SHORT, &Indicess.front());
+
+}

FinalProject/terrain.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "utils.h"
+
+#include <vector>
+#include <string>
+
+class Terrain {
+private:
+    std::vector<float> Vertex;
+    std::vector<unsigned int> Indicess;
+    unsigned int TerrainVAO, TerrainVBO;
+    int row_num, col_num;
+public:
+    unsigned int dep, tex1, tex2;
+    Terrain(int rows = 200, int cols = 200);
+    void render();
+    unsigned int loadTexture(std::string path);
+};