Add finite grid ground
Jeremy Hu
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README.md
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README.md
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@ -6,15 +6,27 @@ Idea
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===========
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I was inspired by Jimmy Gunawan's blogs of monster generation, here is the first one [INSPIRATION / Pixar Monster Factory Part One](http://blendersushi.blogspot.com.au/2013/06/inspiration-pixar-monster-factory-part.html), and by search the Skin Modifier of Blender, I found the theory of Skin Modifier:
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[B-Mesh: A Fast Modeling System for Base Meshes
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of 3D Articulated Shapes](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.357.7134&rep=rep1&type=pdf)(Authors: Zhongping Ji, Ligang Liu2, Yigang Wang1). I started to think of monster model generation for game development from years ago, thanks for this paper, Dust3D is achievable now.
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of 3D Articulated Shapes](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.357.7134&rep=rep1&type=pdf)(Authors: Zhongping Ji, Ligang Liu, Yigang Wang). I started to think of monster model generation for game development from years ago, thanks for this paper, Dust3D is achievable now.
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From my initial thought, Dust3D should be a tool like [Makehuman](http://www.makehuman.org), with more versatile features, not only can make human, but also be able to **generate monsters automatically**.
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Progress
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TODO & Progress
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==============
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Drawing Primitives
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-----------
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- [x] Drawing Primitives (Dec 15, 2016 ~ Dec 17, 2016)
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*Sphere*
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I don't want the whole project have any unnecessary dependent, like glu library.
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Let's start with [drawing a sphere without gluSphere]( http://stackoverflow.com/questions/7687148/drawing-sphere-in-opengl-without-using-glusphere), because I want implement the same balls which presented in the [B-Mesh paper](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.357.7134&rep=rep1&type=pdf).
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Let's start with [drawing a sphere without gluSphere]( http://stackoverflow.com/questions/7687148/drawing-sphere-in-opengl-without-using-glusphere), because I want implement the same spheres which presented in the [B-Mesh paper](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.357.7134&rep=rep1&type=pdf).
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*Cylinder*
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Two caps and many strips composites a cylinder.
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Two caps and many strips composites a cylinder.
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*Infinite Grid*
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Almost all 3D editor have a infinite grid ground, I just made a finite one, in the future, I should expand the grid outside of the screen to make it infinite.
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Now, for just beginning, I think it's a not bad start.
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<img src="screenshot/dust3d_sphere_cylinder.png">
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- [ ] Implement B-Mesh algorithm
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- [ ] Export Wavefront .obj
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- [ ] Render B-Mesh result
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- [ ] Design UI for monster parts configuration
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- [ ] Test B-Mesh realtime generation with UI
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- [ ] Render rigid animation
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- [ ] png exporter for isometric 2.5D game
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- [ ] Version 0.01 release
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- [ ] Materials merge of different parts
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Binary file not shown.
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After Width: | Height: | Size: 128 KiB |
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@ -29,6 +29,23 @@ int drawCylinder(int slices, float radius, float height) {
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return -1;
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}
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// strips
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glBegin(GL_TRIANGLE_STRIP);
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for (a = 0, lv = 0; lv <= slices; ++lv) {
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float cosa = cos(a);
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float sina = sin(a);
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x = cosa * radius;
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y = sina * radius;
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z = -halfHeight;
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glNormal3f(cosa, sina, 0);
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glVertex3f(x, y, z);
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z = halfHeight;
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glNormal3f(cosa, sina, 0);
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glVertex3f(x, y, z);
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a += theta;
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}
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glEnd();
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// bottom cap
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z = -halfHeight;
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glBegin(GL_TRIANGLE_FAN);
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@ -57,23 +74,6 @@ int drawCylinder(int slices, float radius, float height) {
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}
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glEnd();
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// strips
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glBegin(GL_TRIANGLE_STRIP);
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for (a = 0, lv = 0; lv <= slices; ++lv) {
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float cosa = cos(a);
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float sina = sin(a);
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x = cosa * radius;
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y = sina * radius;
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z = -halfHeight;
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glNormal3f(cosa, sina, 0);
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glVertex3f(x, y, z);
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z = halfHeight;
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glNormal3f(cosa, sina, 0);
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glVertex3f(x, y, z);
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a += theta;
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}
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glEnd();
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return 0;
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}
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@ -88,22 +88,30 @@ GLWidget::~GLWidget() {
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}
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void GLWidget::initializeGL() {
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GLfloat mat_specular[] = {1.0, 1.0, 1.0, 1.0};
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GLfloat mat_shininess[] = {50.0};
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GLfloat light_position[] = {1.0, 1.0, 1.0, 0.0};
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GLfloat light[] = {1.0, 0.2, 0.2};
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GLfloat lmodel_ambient[] = {0.1, 0.1, 0.1, 1.0};
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GLfloat mat_ambient[] = { 0.0 , 0.0 , 0.0 , 1.0 };
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GLfloat mat_diffuse[] = { 0.55 , 0.55 , 0.55 , 1.0 };
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GLfloat mat_specular[] = {0.7 , 0.7 , 0.7, 1.0 };
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GLfloat mat_shininess[] = { 32 };
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GLfloat light_diffuse[] = { 1.0 , 1.0 , 1.0 , 1.0 };
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GLfloat light_specular[] = { 1.0 , 1.0 , 1.0 , 1.0 };
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GLfloat light_ambient[] = { 0.2 , 0.2 , 0.2 , 1.0 };
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GLfloat light_position[] = { -1,1,1 , 0 };
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glShadeModel(GL_SMOOTH);
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glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
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glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
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glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
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glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
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glLightfv(GL_LIGHT0, GL_POSITION, light_position);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, light);
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glLightfv(GL_LIGHT0, GL_SPECULAR, light);
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glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
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glLightfv(GL_LIGHT0 , GL_POSITION , light_position);
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glLightfv(GL_LIGHT0 , GL_DIFFUSE , light_diffuse);
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glLightfv(GL_LIGHT0 , GL_AMBIENT , light_ambient);
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glLightfv(GL_LIGHT0 , GL_SPECULAR , light_specular);
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glDepthFunc(GL_LESS);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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@ -113,27 +121,38 @@ void GLWidget::initializeGL() {
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void GLWidget::paintGL() {
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static int angle = 0;
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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//drawSphere(3);
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glBegin(GL_LINES);
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for (GLfloat i = -2.5; i <= 2.5; i += 0.25) {
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glVertex3f(i, 0, 2.5); glVertex3f(i, 0, -2.5);
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glVertex3f(2.5, 0, i); glVertex3f(-2.5, 0, i);
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}
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glEnd();
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drawSphere(4);
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glPushMatrix();
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glRotatef(angle, 1, 0, 0);
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glRotatef(angle, 1, 1, 0);
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angle = (angle + 1) % 360;
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drawCylinder(50, 0.2, 2);
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drawCylinder(40, 0.2, 2.1);
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glPopMatrix();
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}
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void GLWidget::resizeGL(int w, int h) {
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glViewport(0, 0, (GLsizei)w, (GLsizei)h);
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glClearColor(0.92, 0.92, 0.92, 1.0);
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glColor3f(1.0, 1.0, 1.0);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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if (w <= h) {
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glOrtho(-1.5, 1.5, -1.5*(GLfloat)h/(GLfloat)w,
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1.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
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} else {
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glOrtho(-1.5*(GLfloat)w/(GLfloat)h,
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1.5*(GLfloat)w/(GLfloat)h, -1.5, 1.5, -10.0, 10.0);
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}
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glFrustum(-2, 2, -1.5, 1.5, 1, 10);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0, 0, -2);
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glRotatef(50, 1, 0, 0);
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glRotatef(70, 0, 1, 0);
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}
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void GLWidget::mousePressEvent(QMouseEvent *event) {
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