paysages : Explorer texturing (WIP).

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@325 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
This commit is contained in:
Michaël Lemaire 2012-05-09 16:26:07 +00:00 committed by ThunderK
parent 69ff124eaa
commit 44f88aaafb
6 changed files with 81 additions and 18 deletions

1
TODO
View file

@ -17,7 +17,6 @@ Technology Preview 2 :
=> Improve curve rendering
=> Add axis labels
- Improve 3d explorer
=> Improve priority rendering (prioritize on screen chunks)
=> Restore LOD and intelligent poly count
=> Interrupt chunk rendering when quitting dialog
=> Don't display the water if it's below all ground

View file

@ -5,6 +5,7 @@
#include <QColor>
#include <QGLWidget>
#include <math.h>
#include "../lib_paysages/camera.h"
#include "../lib_paysages/color.h"
#include "../lib_paysages/euclid.h"
#include "../lib_paysages/tools.h"
@ -17,8 +18,7 @@ WandererChunk::WandererChunk(Renderer* renderer, double x, double z, double size
_startz = z;
_size = size;
_ideal_tessellation = 1;
_ideal_priority = 0.0;
priority = 0.0;
_tessellation_max_size = 32;
_tessellation = new double[(_tessellation_max_size + 1) * (_tessellation_max_size + 1)];
@ -82,31 +82,42 @@ void WandererChunk::render(QGLWidget* widget)
}
}
void WandererChunk::updatePriority(Vector3 camera_location)
void WandererChunk::updatePriority(CameraDefinition* camera)
{
// Compute new priority
_lock_data.lock();
if (_tessellation_current_size == _tessellation_max_size && _texture_current_size == _texture_max_size)
{
_ideal_priority = -1000.0;
priority = -1000.0;
}
else
{
double distance = v3Norm(v3Sub(camera_location, getCenter()));
double distance, wanted_size;
Vector3 center;
center = getCenter();
distance = v3Norm(v3Sub(camera->location, center));
distance = distance < 0.1 ? 0.1 : distance;
_ideal_tessellation = (int)ceil(120.0 - distance / 3.0);
_ideal_priority = _ideal_tessellation - _texture_current_size;
wanted_size = (int)ceil(120.0 - distance / 3.0);
priority = wanted_size - _texture_current_size;
if (_texture_current_size == 1)
{
_ideal_priority += 100.0;
priority += 100.0;
}
else if (distance < 15.0 && _texture_current_size < _texture_max_size)
{
_ideal_priority += 75.0;
priority += 75.0;
}
else if (distance < 30.0 && _texture_current_size < _texture_max_size / 2)
{
_ideal_priority += 50.0;
priority += 50.0;
}
if (!cameraIsBoxInView(camera, center, _size, _size, 40.0))
{
priority -= 100.0;
}
}
_lock_data.unlock();

View file

@ -13,12 +13,12 @@ public:
~WandererChunk();
bool maintain();
void updatePriority(Vector3 camera_location);
void updatePriority(CameraDefinition* camera);
void render(QGLWidget* widget);
Vector3 getCenter();
double _ideal_priority;
double priority;
private:
QMutex _lock_data;
@ -28,8 +28,6 @@ private:
double _startz;
double _size;
int _ideal_tessellation;
double* _tessellation;
int _tessellation_max_size;
int _tessellation_current_size;

View file

@ -169,7 +169,7 @@ void WidgetWanderer::stopThreads()
bool _cmpChunks(const WandererChunk* c1, const WandererChunk* c2)
{
return c1->_ideal_priority > c2->_ideal_priority;
return c1->priority > c2->priority;
}
void WidgetWanderer::performChunksMaintenance()
@ -354,7 +354,7 @@ void WidgetWanderer::timerEvent(QTimerEvent *event)
for (int i = 0; i < _chunks.count(); i++)
{
_chunks[i]->updatePriority(_current_camera.location);
_chunks[i]->updatePriority(&_current_camera);
}
_lock_chunks.lock();
qSort(_updateQueue.begin(), _updateQueue.end(), _cmpChunks);

View file

@ -2,6 +2,7 @@
#include <stdlib.h>
#include <math.h>
#include <glib-2.0/glib/gmacros.h>
#include "euclid.h"
#include "render.h"
#include "shared/types.h"
@ -296,3 +297,56 @@ void cameraProjectToFragment(CameraDefinition* camera, Renderer* renderer, doubl
renderPushQuad(&v1, &v2, &v3, &v4);
}*/
static inline void _updateBox(Vector3* point, double* xmin, double* xmax, double* ymin, double* ymax, double* zmax)
{
*xmin = MIN(*xmax, point->x);
*xmax = MAX(*xmin, point->x);
*ymin = MIN(*ymax, point->y);
*ymax = MAX(*ymin, point->y);
*zmax = MAX(*zmax, point->z);
}
int cameraIsBoxInView(CameraDefinition* camera, Vector3 center, double xsize, double ysize, double zsize)
{
Vector3 projected;
double xmin, xmax, ymin, ymax, zmax;
center.x -= xsize / 2.0;
center.y -= ysize / 2.0;
center.z -= zsize / 2.0;
projected = cameraProject(camera, NULL, center);
xmin = xmax = projected.x;
ymin = ymax = projected.y;
zmax = projected.z;
center.x += xsize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.y += ysize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.z += zsize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.x -= xsize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.y -= ysize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.x += xsize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
center.z -= zsize;
projected = cameraProject(camera, NULL, center);
_updateBox(&projected, &xmin, &xmax, &ymin, &ymax, &zmax);
return xmin <= camera->width && xmax >= 0.0 && ymin <= camera->height && ymax >= 0.0 && zmax >= camera->znear;
}

View file

@ -36,6 +36,7 @@ Vector3 cameraProject(CameraDefinition* camera, Renderer* renderer, Vector3 poin
Vector3 cameraUnproject(CameraDefinition* camera, Renderer* renderer, Vector3 point);
void cameraProjectToFragment(CameraDefinition* camera, Renderer* renderer, double x, double y, double z, RenderFragment* result);
/*void cameraPushOverlay(CameraDefinition* camera, Color col, f_RenderFragmentCallback callback);*/
int cameraIsBoxInView(CameraDefinition* camera, Vector3 center, double xsize, double ysize, double zsize);
#ifdef __cplusplus
}