Enhance slightly the scene (floor + background)

Ball.cpp

@@ -42,7 +42,6 @@ void Ball::_compute_pos(double dt) {
     }
     Center.x += dt * v_x;
     Center.z += dt * v_z;
-    std::cout << (*this) <<"\n";
     surface.update_center_pos(Center);
     surface.check_ground_collision(ground);
 }
@@ -89,10 +88,6 @@ void Ball::_compute_parameters() {
         _compute_v_x(normal);
         _compute_v_z(normal);
         min_height = fmin(radius, min_height + 0.2 * (radius - min_height));
-        std::cout << "U:" << U << "\n";
-        std::cout << "B:" << B << "\n";
-        std::cout << "A:" << A << "\n";
-        std::cout << "T:" << T << "\n";
 }
 
 void Ball::update_pos(double dt) {

GroundFlatMesh.cpp

@@ -0,0 +1,45 @@
+#include "GroundFlatMesh.hpp"
+
+#include <vector>
+
+const int GroundFlatMesh::MIN_I = -40;
+const int GroundFlatMesh::MAX_I = 100;
+const int GroundFlatMesh::MIN_J = -40;
+const int GroundFlatMesh::MAX_J = 100;
+
+GroundFlatMesh::GroundFlatMesh(const Point& center, double decay_speed)
+    : center(center), decay_speed(decay_speed)
+{
+    std::vector<std::vector<size_t> > vertice_at(MAX_I - MIN_I + 1,
+            std::vector<size_t>(MAX_J - MIN_J + 1));
+
+    for(int i=MIN_I; i < MAX_I + 1; ++i) {
+        for(int j=MIN_J; j < MAX_J + 1; ++j) {
+            vertice_at[i - MIN_I][j - MIN_J] =
+                output.add_vertice(
+                        tile_position(i, j),
+                        Point(0., 1., 0.));
+        }
+    }
+
+    for(int i=MIN_I; i < MAX_I; ++i) {
+        for(int j=MIN_J; j < MAX_J; ++j) {
+            output.add_face(Face(
+                        vertice_at[i - MIN_I][j - MIN_J],
+                        vertice_at[i - MIN_I][j + 1 - MIN_J],
+                        vertice_at[i + 1 - MIN_I][j + 1 - MIN_J]));
+            output.add_face(Face(
+                        vertice_at[i - MIN_I][j - MIN_J],
+                        vertice_at[i + 1 - MIN_I][j + 1 - MIN_J],
+                        vertice_at[i + 1- MIN_I][j - MIN_J]));
+        }
+    }
+}
+
+double GroundFlatMesh::ith_dist(int i) const {
+    return ((i < 0) ? -1 : 1) * decay_speed * i * i;
+}
+
+Point GroundFlatMesh::tile_position(int i, int j) const {
+    return Point(ith_dist(i), 0., ith_dist(j));
+}

GroundFlatMesh.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "Mesh.hpp"
+
+class GroundFlatMesh {
+    public:
+        GroundFlatMesh(const Point& center, double decay_speed);
+
+        Mesh* get_mesh() { return &output; }
+
+    private: //meth
+        double ith_dist(int i) const;
+        Point tile_position(int i, int j) const;
+
+    private:
+        static const int MIN_I, MAX_I, MIN_J, MAX_J;
+        Mesh output;
+        const Point& center;
+        double decay_speed;
+};

Makefile

@@ -19,6 +19,7 @@ OBJS=Implicit.o \
 	 MarchingCubes.o \
 	 _gen/marching_cubes_data.o \
 	 periodic_updates.o \
+	 GroundFlatMesh.o \
 	 tests/TestImplicitSphere.o \
 	 render/GlutRender.o
 

main_bounce.cpp

@@ -6,6 +6,7 @@
 #include "Ball.hpp"
 #include "FlatGround.hpp"
 #include "MarchingCubes.hpp"
+#include "GroundFlatMesh.hpp"
 
 #include "periodic_updates.hpp"
 
@@ -15,7 +16,8 @@ int main(int argc, char** argv) {
     GlutRender& render = GlutRender::get_instance();
     render.init(&argc, argv, 640, 480, "Bouncing stuff");
 
-    Ball ball(Point(0, 5, 0), flat, 0.75, -0.5, -0.7, 1, 1);
+    Ball ball(Point(0, 5, 0), flat, 0.55, -.5, -.7, 1, 1);
+    ball.get_surface()->set_color(Color(1., 0., 0.));
 
     Cuboid bbox = ball.get_surface()->max_bounding_box();
     Cuboid bbox_2(Point(-2, -1, -2), Point(2,1,2));
@@ -24,6 +26,11 @@ int main(int argc, char** argv) {
             bbox.high(0), bbox.high(1), bbox.high(2));
     render.add_surface(ball.get_surface(), bbox);
 
+
+    GroundFlatMesh ground(Point(0., 0., 0.), 0.05);
+    ground.get_mesh()->set_color(Color(0.13, 0.82, 0.21));
+    render.add_mesh(ground.get_mesh());
+
     render.set_idle_func(periodic_update);
     init_periodic_static(&ball);
     render.run();

render/GlutRender.cpp

@@ -31,10 +31,10 @@ void GlutRender::init(int* argc, char** argv,
     glutReshapeFunc(reshape_handle);
 
     // ==== Lighting ====
-    GLfloat light0_pos[] = {10., 15., 10.};
+    GLfloat light0_pos[] = {30., 35., 20., 0.};
     GLfloat light0_ambient[] = {0., 0., 0., 1.};
-    GLfloat light0_diffuse[] = {1., 1., .65, 1.};
+    GLfloat light0_diffuse[] = {1., 1., .85, 1.};
-    GLfloat light0_specular[] = {5., 5., .33, 1.};
+    GLfloat light0_specular[] = {5., 5., .43, 1.};
     glLightfv(GL_LIGHT0, GL_POSITION, light0_pos);
     glLightfv(GL_LIGHT0, GL_AMBIENT, light0_ambient);
     glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
@@ -47,15 +47,16 @@ void GlutRender::init(int* argc, char** argv,
     glEnable(GL_LIGHT0);
     glShadeModel(GL_SMOOTH); // Enable smooth shading
 
+    glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
     GLfloat material_specular[] = {1., 1., 1., 1.};
     GLfloat material_emission[] = {0., 0., 0., 1.};
-    glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
     glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular);
     glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission);
     glEnable(GL_COLOR_MATERIAL);
 
     // ==== Misc ====
-    glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Background color
+    //glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Background color
+    glClearColor(0.15f, 0.08f, 0.5f, 1.0f); // Background color
     glClearDepth(1.0f);                   // Set background depth to farthest
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LEQUAL);