cybergrid

[vrfileman] / src / app.cc

diff --git a/src/app.cc b/src/app.cc
new file mode 100644 (file)
index 0000000..1de3f89
--- /dev/null
+++ b/src/app.cc
@@ -0,0 +1,135 @@
+#include <stdio.h>
+#include <assert.h>
+#include "opengl.h"
+#include "app.h"
+#include "gmath/gmath.h"
+#include "mesh.h"
+#include "meshgen.h"
+#include "sdr.h"
+
+int win_width, win_height;
+float win_aspect;
+long time_msec;
+
+static float cam_theta, cam_phi;
+static Mesh *mesh_torus;
+
+static bool bnstate[16];
+static int prev_x, prev_y;
+
+static unsigned int sdr_grid;
+
+bool app_init(int argc, char **argv)
+{
+       if(init_opengl() == -1) {
+               return false;
+       }
+
+       glEnable(GL_MULTISAMPLE);
+
+       int aasamples = 0;
+       glGetIntegerv(GL_SAMPLES, &aasamples);
+       printf("got %d samples per pixel\n", aasamples);
+
+       glEnable(GL_CULL_FACE);
+       glEnable(GL_DEPTH_TEST);
+       //glEnable(GL_LIGHTING);
+       glEnable(GL_LIGHT0);
+
+       Mesh::use_custom_sdr_attr = false;
+
+       mesh_torus = new Mesh;
+       gen_torus(mesh_torus, 1.0, 0.25, 32, 32);
+
+       if(!(sdr_grid = create_program_load("sdr/grid.v.glsl", "sdr/grid.p.glsl"))) {
+               return false;
+       }
+
+       return true;
+}
+
+void app_cleanup()
+{
+}
+
+void app_draw()
+{
+       glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+       Mat4 view_mat;
+       view_mat.pre_rotate_x(deg_to_rad(cam_phi));
+       view_mat.pre_rotate_y(deg_to_rad(cam_theta));
+       view_mat.pre_translate(0, -1.65, 0);
+       glMatrixMode(GL_MODELVIEW);
+       glLoadMatrixf(view_mat[0]);
+
+       //mesh_torus->draw();
+
+       Mat4 xform;
+       xform.scaling(500.0);
+       glPushMatrix();
+       glMultMatrixf(xform[0]);
+
+       bind_program(sdr_grid);
+       glBegin(GL_QUADS);
+       glNormal3f(0, 1, 0);
+       glVertex3f(-1, 0, 1);
+       glVertex3f(1, 0, 1);
+       glVertex3f(1, 0, -1);
+       glVertex3f(-1, 0, -1);
+       glEnd();
+       bind_program(0);
+
+       glPopMatrix();
+
+       app_swap_buffers();
+       assert(glGetError() == GL_NO_ERROR);
+}
+
+void app_reshape(int x, int y)
+{
+       glViewport(0, 0, x, y);
+
+       Mat4 mat;
+       mat.perspective(deg_to_rad(50), win_aspect, 0.5, 500.0);
+
+       glMatrixMode(GL_PROJECTION);
+       glLoadMatrixf(mat[0]);
+}
+
+void app_keyboard(int key, bool pressed)
+{
+       if(pressed) {
+               switch(key) {
+               case 27:
+                       app_quit();
+                       break;
+               }
+       }
+}
+
+void app_mouse_button(int bn, bool pressed, int x, int y)
+{
+       bnstate[bn] = pressed;
+       prev_x = x;
+       prev_y = y;
+}
+
+void app_mouse_motion(int x, int y)
+{
+       int dx = x - prev_x;
+       int dy = y - prev_y;
+       prev_x = x;
+       prev_y = y;
+
+       if(!dx && !dy) return;
+
+       if(bnstate[0]) {
+               cam_theta += dx * 0.5;
+               cam_phi += dy * 0.5;
+
+               if(cam_phi < -90) cam_phi = -90;
+               if(cam_phi > 90) cam_phi = 90;
+       }
+       app_redraw();
+}