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Adjusting example to use non-cubic volume...

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This commit is contained in:
David Williams
2009-04-20 19:51:10 +00:00
parent 2b5b076b98
commit e87f84af86
2 changed files with 15 additions and 14 deletions
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25
examples/OpenGL/OpenGLWidget.cpp
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@ -15,6 +15,7 @@ OpenGLWidget::OpenGLWidget(QWidget *parent)
{ {
m_xRotation = 0; m_xRotation = 0;
m_yRotation = 0; m_yRotation = 0;
m_uRegionSideLength = 16.0f;
m_distance = -g_uVolumeSideLength / 2.0f; m_distance = -g_uVolumeSideLength / 2.0f;
timer = new QTimer(this); timer = new QTimer(this);
@ -38,11 +39,11 @@ void OpenGLWidget::setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData)
//Our volume is broken down into cuboid regions, and we create one mesh for each region. //Our volume is broken down into cuboid regions, and we create one mesh for each region.
//This three-level for loop iterates over each region. //This three-level for loop iterates over each region.
for(PolyVox::uint16_t uRegionZ = 0; uRegionZ < g_uVolumeSideLengthInRegions; ++uRegionZ) for(PolyVox::uint16_t uRegionZ = 0; uRegionZ < m_uVolumeDepthInRegions; ++uRegionZ)
{ {
for(PolyVox::uint16_t uRegionY = 0; uRegionY < g_uVolumeSideLengthInRegions; ++uRegionY) for(PolyVox::uint16_t uRegionY = 0; uRegionY < m_uVolumeHeightInRegions; ++uRegionY)
{ {
for(PolyVox::uint16_t uRegionX = 0; uRegionX < g_uVolumeSideLengthInRegions; ++uRegionX) for(PolyVox::uint16_t uRegionX = 0; uRegionX < m_uVolumeWidthInRegions; ++uRegionX)
{ {
//Create a new surface patch (which is basiaclly the PolyVox term for a mesh). //Create a new surface patch (which is basiaclly the PolyVox term for a mesh).
IndexedSurfacePatch* ispCurrent = new IndexedSurfacePatch(); IndexedSurfacePatch* ispCurrent = new IndexedSurfacePatch();
@ -50,13 +51,13 @@ void OpenGLWidget::setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData)
//Compute the extents of the current region //Compute the extents of the current region
//FIXME - This is a little complex? PolyVox could //FIXME - This is a little complex? PolyVox could
//provide more functions for dealing with regions? //provide more functions for dealing with regions?
PolyVox::uint16_t regionStartX = uRegionX * g_uRegionSideLength; PolyVox::uint16_t regionStartX = uRegionX * m_uRegionSideLength;
PolyVox::uint16_t regionStartY = uRegionY * g_uRegionSideLength; PolyVox::uint16_t regionStartY = uRegionY * m_uRegionSideLength;
PolyVox::uint16_t regionStartZ = uRegionZ * g_uRegionSideLength; PolyVox::uint16_t regionStartZ = uRegionZ * m_uRegionSideLength;
PolyVox::uint16_t regionEndX = regionStartX + g_uRegionSideLength + 1; //Why do we need the '+1' here? PolyVox::uint16_t regionEndX = regionStartX + m_uRegionSideLength + 1; //Why do we need the '+1' here?
PolyVox::uint16_t regionEndY = regionStartY + g_uRegionSideLength + 1; //Why do we need the '+1' here? PolyVox::uint16_t regionEndY = regionStartY + m_uRegionSideLength + 1; //Why do we need the '+1' here?
PolyVox::uint16_t regionEndZ = regionStartZ + g_uRegionSideLength + 1; //Why do we need the '+1' here? PolyVox::uint16_t regionEndZ = regionStartZ + m_uRegionSideLength + 1; //Why do we need the '+1' here?
Vector3DInt32 regLowerCorner(regionStartX, regionStartY, regionStartZ); Vector3DInt32 regLowerCorner(regionStartX, regionStartY, regionStartZ);
Vector3DInt32 regUpperCorner(regionEndX, regionEndY, regionEndZ); Vector3DInt32 regUpperCorner(regionEndX, regionEndY, regionEndZ);
@ -154,11 +155,11 @@ void OpenGLWidget::paintGL()
//Centre the volume on the origin //Centre the volume on the origin
glTranslatef(-g_uVolumeSideLength/2,-g_uVolumeSideLength/2,-g_uVolumeSideLength/2); glTranslatef(-g_uVolumeSideLength/2,-g_uVolumeSideLength/2,-g_uVolumeSideLength/2);
for(PolyVox::uint16_t uRegionZ = 0; uRegionZ < g_uVolumeSideLengthInRegions; ++uRegionZ) for(PolyVox::uint16_t uRegionZ = 0; uRegionZ < m_uVolumeDepthInRegions; ++uRegionZ)
{ {
for(PolyVox::uint16_t uRegionY = 0; uRegionY < g_uVolumeSideLengthInRegions; ++uRegionY) for(PolyVox::uint16_t uRegionY = 0; uRegionY < m_uVolumeHeightInRegions; ++uRegionY)
{ {
for(PolyVox::uint16_t uRegionX = 0; uRegionX < g_uVolumeSideLengthInRegions; ++uRegionX) for(PolyVox::uint16_t uRegionX = 0; uRegionX < m_uVolumeWidthInRegions; ++uRegionX)
{ {
Vector3DUint8 v3dRegPos(uRegionX,uRegionY,uRegionZ); Vector3DUint8 v3dRegPos(uRegionX,uRegionY,uRegionZ);
if(m_bUseOpenGLVertexBufferObjects) if(m_bUseOpenGLVertexBufferObjects)

4
examples/OpenGL/OpenGLWidget.h
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@ -16,8 +16,8 @@
#include "Shapes.h" #include "Shapes.h"
const PolyVox::uint16_t g_uVolumeSideLength = 128; const PolyVox::uint16_t g_uVolumeSideLength = 128;
const PolyVox::uint16_t g_uRegionSideLength = 16; //const PolyVox::uint16_t g_uRegionSideLength = 16;
const PolyVox::uint16_t g_uVolumeSideLengthInRegions = g_uVolumeSideLength / g_uRegionSideLength; //const PolyVox::uint16_t g_uVolumeSideLengthInRegions = g_uVolumeSideLength / g_uRegionSideLength;
class OpenGLWidget : public QGLWidget class OpenGLWidget : public QGLWidget
{ {