virtual void calc()
{
if( fn_bind() ) // avoid GPF!
{
if( fn_calc() ) // check or recalc input
{
glm::mat4 camera_world_position(1.f); // camera world position
glm::mat4 camera_view(1.f); // camera view transformation
// load camera world position from gdom "wpos"
set_glm_mat4_from_m4(camera_world_position, mp_wpos); // init glm-variable from gx-gdom-field
// GetViewMatrix() const
float* cwp = glm::value_ptr(camera_world_position); // used as float[16]
glm::vec3 camera_position(cwp[12], cwp[13], cwp[14]); // cwp translation;
glm::vec3 z(cwp[ 2], cwp[ 6], cwp[10]); // cwp z-vector;
glm::vec3 look_at_point = camera_position + z;
glm::vec3 up_vector (cwp[ 1], cwp[ 5], cwp[ 9]); // cwp y-vector;
camera_view = glm::lookAt(camera_position, look_at_point, up_vector);
// save camera_view to gdom "view"
set_m4_from_glm_mat4(mp_view, camera_view);
// reset state to GOOD
return gx::fn::calc_success();
}
else
{
return gx::fn::fn_calc_failed();
}
}
else
{
return gx::fn::fn_bind_failed();
}
}
gint facet_visible(struct model_pak *data, struct plane_pak *plane)
{
gdouble a, norm[3], vec[3];
/* NEW - an edge (2 vertices) is not to be treated as visible */
if (g_slist_length(plane->vertices) < 3)
return(FALSE);
/* get plane normal */
ARR3SET(norm, plane->norm);
VEC3MUL(norm, -1.0);
#if DEBUG_FACET
printf("facet (%2d%2d%2d), norm: %5.2f,%5.2f,%5.2f "
,plane->index[0] ,plane->index[1] ,plane->index[2]
,norm[0],norm[1],norm[2]);
#endif
/* absolute viewing vector, determining if visible or not */
camera_view(vec, data->camera);
/* got correct facet normal - is it visible? */
a = via(norm,vec,3);
if (a < 0.5*G_PI)
{
#if DEBUG_FACET
printf("view: %5.2f,%5.2f,%5.2f (%5.1f) YES\n",vec[0],vec[1],vec[2],180.0*a/PI);
#endif
return(TRUE);
}
/* else... */
#if DEBUG_FACET
printf("view: %5.2f,%5.2f,%5.2f (%5.1f) NO\n",vec[0],vec[1],vec[2],180.0*a/PI);
#endif
return(FALSE);
}
void scene_render(scene_t *scene,float ifps) {
int i,j,light;
static int frame;
glDisable(GL_FOG);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
scene_update(scene,ifps); // update scene
scene_animation(scene); // create mesh and check view animated object
scene_particle(scene); // check view and move particle system
scene_dynamiclight(scene); // check view and move dynamiclight
if(frame == FRAME_PER_SHADOW) {
shadow_enable_shadowmap(); // create shadow maps
for(i = 0; i < scene->num_animation; i++)
if(scene->animation[i]->view && scene->animation[i]->shadow > 0)
shadow_shadowmap(scene->sun->pos,scene->animation[i]->thing,scene->animation[i]->shadow);
shadow_disable_shadowmap(sys_width(),sys_height());
frame = 0;
}
frame++;
glColor4f(1.0,1.0,1.0,1.0);
glEnable(GL_TEXTURE_2D);
camera_view(scene->camera); // set camera
sky_render(scene->sky,scene->camera,ifps); // render sky
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0); // sun light
glLightfv(GL_LIGHT0,GL_POSITION,scene->sun->pos);
glLightfv(GL_LIGHT0,GL_DIFFUSE,scene->sun->color);
glEnable(GL_FOG);
for(i = 0, j = 1, light = 0; i < scene->num_dynamiclight; i++)
if(scene->dynamiclight[i]->opengl) { // add dynamic lights
switch(j) {
case 1: light = GL_LIGHT1; break;
case 2: light = GL_LIGHT2; break;
case 3: light = GL_LIGHT3; break;
case 4: light = GL_LIGHT4; break;
case 5: light = GL_LIGHT5; break;
case 6: light = GL_LIGHT6; break;
case 7: light = GL_LIGHT7; break;
}
glEnable(light);
glLightfv(light,GL_POSITION,scene->dynamiclight[i]->light->center);
glLightfv(light,GL_DIFFUSE,scene->dynamiclight[i]->light->color);
j++;
if(j == 8) break;
}
glFogfv(GL_FOG_COLOR,scene->camera->fogcolor);
glFogf(GL_FOG_START,scene->camera->fogstart);
glFogf(GL_FOG_END,scene->camera->fogend);
land_render(scene->land,scene->camera); // render landscape
for(i = 0; i < scene->num_thing; i++) // render thing
if(camera_check_sphere(scene->camera,scene->thing[i]->center,scene->thing[i]->radius) &&
camera_check_box(scene->camera,scene->thing[i]->min,scene->thing[i]->max))
thing_render(scene->thing[i]);
for(i = 0; i < scene->num_animation; i++) // render animated object
if(scene->animation[i]->view)
thing_render(scene->animation[i]->thing);
glDisable(GL_LIGHTING);
shadow_enable_project();
for(i = 0; i < scene->num_animation; i++) // dynamic shadow on land
if(scene->animation[i]->view && scene->animation[i]->shadow > 0) {
shadow_project(scene->sun->pos,scene->animation[i]->thing);
land_dynamicshadow(scene->land,scene->sun->pos,scene->animation[i]->thing);
}
shadow_disable_project();
for(i = 0; i < scene->num_particle; i++) // particle
if(scene->particle[i]->view)
particle_render(scene->particle[i]->particle,scene->camera,ifps);
for(i = 0; i < scene->num_dynamiclight; i++)// dynamiclight
if(scene->dynamiclight[i]->view)
dynamiclight_render(scene->dynamiclight[i]->light,scene->camera,scene->land);
glDisable(GL_FOG);
sky_sun_render(scene->sun,scene->camera); // render sun and flare
glDisable(GL_TEXTURE_2D);
}