separate face and head
- Head position is now calculated from the midpoint of points 2 and 14 (sides of head) - Face position is calculated from point 30 (nose tip)
This commit is contained in:
parent
25ebd7a387
commit
62779b6f78
157
src/graphics.cpp
157
src/graphics.cpp
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@ -11,24 +11,37 @@
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#include <graphics.hpp>
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GLuint vbo; //vertex buffer
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GLuint ebo; //element buffer
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GLuint vao; //vertex array (holds shader relations etc to vertex buffer)
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//VAOs for different parts
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//TODO: make this more modular
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GLuint head; //head object
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GLuint face; //face object
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GLuint shader; //standard shader program used for all elements
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GLuint transUniform; //location of the "transMatrix" transformation matrix uniform in the shader
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GLuint texHead; //head texture
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GLuint texFace; //face texture
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glm::mat4 matHead(1.0f); //transformation matrix for head object
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glm::mat4 matFace(1.0f); //transformation matrix for face object
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void display () {
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glClear(GL_COLOR_BUFFER_BIT);
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glBindVertexArray(head);
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glBindTexture(GL_TEXTURE_2D, texHead);
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glUniformMatrix4fv(transUniform, 1, GL_FALSE, glm::value_ptr(matHead));
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glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
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glBindVertexArray(face);
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glBindTexture(GL_TEXTURE_2D, texFace);
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glUniformMatrix4fv(transUniform, 1, GL_FALSE, glm::value_ptr(matFace));
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glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
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glutSwapBuffers();
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}
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void initBuffers () {
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glewInit();
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void initBuffers (GLuint* vaoNum) {
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//TODO: put quad stuff in header file or something
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GLfloat quad[] = {
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//vertex UV/texcoord
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@ -43,6 +56,73 @@ void initBuffers () {
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2, 3, 0
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};
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glGenVertexArrays(1, vaoNum);
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glBindVertexArray(*vaoNum);
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GLuint vbo; //vertex buffer
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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//change to GL_DYNAMIC_DRAW when using deformable meshes
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glBufferData(GL_ARRAY_BUFFER, sizeof(quad), quad, GL_STATIC_DRAW);
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GLuint ebo; //element buffer
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glGenBuffers(1, &ebo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quadElements), quadElements, GL_STATIC_DRAW);
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//tell OpenGL what to put in the input vars
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GLuint posAttr = glGetAttribLocation(shader, "position");
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glVertexAttribPointer(posAttr, 2, GL_FLOAT, GL_FALSE, 4*sizeof(GLfloat), 0);
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glEnableVertexAttribArray(posAttr);
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GLuint uvAttr = glGetAttribLocation(shader, "texcoord");
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glVertexAttribPointer(uvAttr, 2, GL_FLOAT, GL_FALSE, 4*sizeof(GLfloat), (void*)(2*sizeof(GLfloat)));
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glEnableVertexAttribArray(uvAttr);
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}
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void initGraphics () {
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int argc = 1;
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char *argv[1] = {(char*)"fc2d"};
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glutInit(&argc, argv);
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glutCreateWindow("FaceCam2D");
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glutInitWindowSize(512, 512);
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glutDisplayFunc(display);
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glewInit();
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initShader();
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initBuffers(&head);
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initBuffers(&face);
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initTexture(&texHead, "head-base.png");
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initTexture(&texFace, "head-face.png");
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//enable blending for alpha textures
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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//set background color
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glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
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}
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void initTexture (GLuint* texNum, const char* path) {
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glGenTextures(1, texNum);
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glBindTexture(GL_TEXTURE_2D, *texNum);
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int x, y, channels;
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GLubyte* pixels = stbi_load(path, &x, &y, &channels, 4);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
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void initShader() {
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const char* vsSrc =
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"#version 150\n"
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"in vec2 position;"
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@ -63,18 +143,6 @@ void initBuffers () {
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"color = texture(tex, uv);"
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"}";
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glGenVertexArrays(1, &vao);
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glBindVertexArray(vao);
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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//change to GL_DYNAMIC_DRAW when using deformable meshes
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glBufferData(GL_ARRAY_BUFFER, sizeof(quad), quad, GL_STATIC_DRAW);
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glGenBuffers(1, &ebo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quadElements), quadElements, GL_STATIC_DRAW);
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//compile vert shader
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GLuint vs = glCreateShader(GL_VERTEX_SHADER);
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glShaderSource(vs, 1, &vsSrc, NULL);
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@ -92,7 +160,6 @@ void initBuffers () {
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if (status != GL_TRUE) { std::cout << "fragment shader borked" << std::endl;
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printShaderCompileLog(vs); }
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//link shaders into a shader program
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shader = glCreateProgram();
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glAttachShader(shader, vs);
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@ -101,48 +168,9 @@ void initBuffers () {
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glLinkProgram(shader);
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glUseProgram(shader);
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//tell OpenGL what to put in the input vars
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GLuint posAttr = glGetAttribLocation(shader, "position");
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glVertexAttribPointer(posAttr, 2, GL_FLOAT, GL_FALSE, 4*sizeof(GLfloat), 0);
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glEnableVertexAttribArray(posAttr);
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GLuint uvAttr = glGetAttribLocation(shader, "texcoord");
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glVertexAttribPointer(uvAttr, 2, GL_FLOAT, GL_FALSE, 4*sizeof(GLfloat), (void*)(2*sizeof(GLfloat)));
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glEnableVertexAttribArray(uvAttr);
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//set an identity ("do nothing") transformation matrix as default
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transUniform = glGetUniformLocation(shader, "transMatrix");
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glUniformMatrix4fv(transUniform, 1, GL_FALSE, glm::value_ptr(glm::mat4(1.0f)));
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GLuint tex;
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glGenTextures(1, &tex);
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glBindTexture(GL_TEXTURE_2D, tex);
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int x, y, channels;
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GLubyte* pixels = stbi_load("face.png", &x, &y, &channels, 4);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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//enable blending for alpha textures
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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void initGraphics () {
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int argc = 1;
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char *argv[1] = {(char*)"fc2d"};
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glutInit(&argc, argv);
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glutCreateWindow("FaceCam2D");
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glutInitWindowSize(512, 512);
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glutDisplayFunc(display);
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initBuffers();
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glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
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}
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void graphicsFrame () {
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@ -160,12 +188,11 @@ void initModel () {
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}
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void updateModel(glm::vec2 headPos) {
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//calculate transform
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glm::mat4 transMatrix = glm::translate(glm::mat4(1.0f), glm::vec3(headPos.x, headPos.y, 0.0f));
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//upload to GPU and put in transMatrix uniform var in shader program
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glUniformMatrix4fv(transUniform, 1, GL_FALSE, glm::value_ptr(transMatrix));
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void updateModel(glm::vec2 headPos, glm::vec2 facePos) {
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//calculate transforms
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matHead = glm::translate(glm::mat4(1.0f), glm::vec3(headPos.x, -headPos.y, 0.0f));
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matFace = glm::translate(glm::mat4(1.0f), glm::vec3(facePos.x, -facePos.y, 0.0f));
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//tell FreeGLUT to schedule a screen update
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glutPostRedisplay();
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}
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@ -8,8 +8,12 @@ void initGraphics ();
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void graphicsFrame ();
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void initTexture (GLuint* texNum, const char* path);
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void initShader();
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void printShaderCompileLog(GLuint shader);
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void updateModel(glm::vec2 headPos);
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void updateModel(glm::vec2 headPos, glm::vec2 facePos);
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#endif
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22
src/main.cpp
22
src/main.cpp
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@ -43,13 +43,25 @@ int main () {
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std::vector<std::vector<cv::Point2f>> landmarks;
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if (facemark->fit (frame, faces, landmarks)) {
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for (int i = 0; i < landmarks[biggestFace].size(); i++) {
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cv::circle (frame, landmarks[biggestFace][i], 2, cv::Scalar (255, 255, 255));
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}
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//for (int i = 0; i < landmarks[biggestFace].size(); i++) {
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// cv::circle (frame, landmarks[biggestFace][i], 2, cv::Scalar (255, 255, 255));
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//}
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cv::circle(frame, cv::Point2f(
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(landmarks[biggestFace][2].x + landmarks[biggestFace][14].x) / 2,
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(landmarks[biggestFace][2].y + landmarks[biggestFace][14].y) / 2
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), 6, cv::Scalar(0, 0, 255));
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cv::circle (frame, landmarks[biggestFace][30], 6, cv::Scalar (0, 255, 255));
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//send control information to graphics
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updateModel(glm::vec2(
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((faces[biggestFace].x + (faces[biggestFace].width / 2)) * 2) / (float)frame.cols - 1,
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((faces[biggestFace].y + (faces[biggestFace].height / 2)) * 2) / -(float)frame.rows + 1
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(landmarks[biggestFace][2].x + landmarks[biggestFace][14].x) / 2
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* 2 / (float)frame.cols - 1,
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(landmarks[biggestFace][2].y + landmarks[biggestFace][14].y) / 2
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* 2 / (float)frame.rows - 1
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),
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glm::vec2(
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landmarks[biggestFace][30].x * 2 / (float)frame.cols - 1,
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landmarks[biggestFace][30].y * 2 / (float)frame.rows - 1
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));
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}
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