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Fix skydome constructor, found by strong99.

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git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2292 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
hybrid 2009-03-16 22:05:00 +00:00
parent d428937f2b
commit 0a127b352c
1 changed files with 20 additions and 16 deletions
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36
source/Irrlicht/CSkyDomeSceneNode.cpp
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@ -31,17 +31,18 @@ namespace scene
parameters stretches the image to fit the chosen "sphere-size". */ parameters stretches the image to fit the chosen "sphere-size". */
CSkyDomeSceneNode::CSkyDomeSceneNode(video::ITexture* sky, u32 horiRes, u32 vertRes, CSkyDomeSceneNode::CSkyDomeSceneNode(video::ITexture* sky, u32 horiRes, u32 vertRes,
f32 texturePercentage, f32 spherePercentage, f32 radius, f32 texturePercentage, f32 spherePercentage, f32 radius,
ISceneNode* parent, ISceneManager* mgr, s32 id) ISceneNode* parent, ISceneManager* mgr, s32 id)
: ISceneNode(parent, mgr, id), Buffer(0), : ISceneNode(parent, mgr, id), Buffer(0),
HorizontalResolution(horiRes), VerticalResolution(vertRes), TexturePercentage(texturePercentage), HorizontalResolution(horiRes), VerticalResolution(vertRes),
SpherePercentage(spherePercentage), Radius(radius) TexturePercentage(texturePercentage),
SpherePercentage(spherePercentage), Radius(radius)
{ {
#ifdef _DEBUG #ifdef _DEBUG
setDebugName("CSkyDomeSceneNode"); setDebugName("CSkyDomeSceneNode");
#endif #endif
setAutomaticCulling ( scene::EAC_OFF ); setAutomaticCulling(scene::EAC_OFF);
Buffer = new SMeshBuffer(); Buffer = new SMeshBuffer();
Buffer->Material.Lighting = false; Buffer->Material.Lighting = false;
@ -53,6 +54,9 @@ CSkyDomeSceneNode::CSkyDomeSceneNode(video::ITexture* sky, u32 horiRes, u32 vert
Buffer->Vertices.clear(); Buffer->Vertices.clear();
Buffer->Indices.clear(); Buffer->Indices.clear();
// regenerate the mesh
generateMesh();
} }
@ -62,38 +66,37 @@ CSkyDomeSceneNode::~CSkyDomeSceneNode()
Buffer->drop(); Buffer->drop();
} }
void CSkyDomeSceneNode::generateMesh() void CSkyDomeSceneNode::generateMesh()
{ {
f32 azimuth, azimuth_step; f32 azimuth;
f32 elevation, elevation_step;
u32 k; u32 k;
video::S3DVertex vtx; const f32 azimuth_step = (core::PI * 2.f) / HorizontalResolution;
azimuth_step = (core::PI * 2.f ) / HorizontalResolution;
if (SpherePercentage < 0.f) if (SpherePercentage < 0.f)
SpherePercentage = -SpherePercentage; SpherePercentage = -SpherePercentage;
if (SpherePercentage > 2.f) if (SpherePercentage > 2.f)
SpherePercentage = 2.f; SpherePercentage = 2.f;
elevation_step = SpherePercentage * core::HALF_PI / (f32)VerticalResolution; const f32 elevation_step = SpherePercentage * core::HALF_PI / (f32)VerticalResolution;
Buffer->Vertices.reallocate( (HorizontalResolution + 1) * (VerticalResolution + 1) ); Buffer->Vertices.reallocate( (HorizontalResolution + 1) * (VerticalResolution + 1) );
Buffer->Indices.reallocate(3 * (2*VerticalResolution - 1) * HorizontalResolution); Buffer->Indices.reallocate(3 * (2*VerticalResolution - 1) * HorizontalResolution);
video::S3DVertex vtx;
vtx.Color.set(255,255,255,255); vtx.Color.set(255,255,255,255);
vtx.Normal.set(0.0f,-1.f,0.0f); vtx.Normal.set(0.0f,-1.f,0.0f);
const f32 tcV = TexturePercentage / VerticalResolution; const f32 tcV = TexturePercentage / VerticalResolution;
for (k = 0, azimuth = 0; k <= HorizontalResolution; ++k) for (k = 0, azimuth = 0; k <= HorizontalResolution; ++k)
{ {
elevation = core::HALF_PI; f32 elevation = core::HALF_PI;
const f32 tcU = (f32)k / (f32)HorizontalResolution; const f32 tcU = (f32)k / (f32)HorizontalResolution;
const f32 sinA = sinf(azimuth); const f32 sinA = sinf(azimuth);
const f32 cosA = cosf(azimuth); const f32 cosA = cosf(azimuth);
for (u32 j = 0; j <= VerticalResolution; ++j) for (u32 j = 0; j <= VerticalResolution; ++j)
{ {
const f32 cosEr = Radius * cosf(elevation); const f32 cosEr = Radius * cosf(elevation);
vtx.Pos.set(cosEr*sinA, Radius*sinf(elevation)+0.0f, cosEr*cosA); vtx.Pos.set(cosEr*sinA, Radius*sinf(elevation), cosEr*cosA);
vtx.TCoords.set(tcU, j*tcV); vtx.TCoords.set(tcU, j*tcV);
vtx.Normal = -vtx.Pos; vtx.Normal = -vtx.Pos;
@ -194,10 +197,9 @@ void CSkyDomeSceneNode::render()
m.Wireframe = true; m.Wireframe = true;
driver->setMaterial(m); driver->setMaterial(m);
driver->drawMeshBuffer( Buffer ); driver->drawMeshBuffer(Buffer);
} }
} }
} }
@ -236,6 +238,7 @@ u32 CSkyDomeSceneNode::getMaterialCount() const
return 1; return 1;
} }
//! Writes attributes of the scene node. //! Writes attributes of the scene node.
void CSkyDomeSceneNode::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const void CSkyDomeSceneNode::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const
{ {
@ -248,6 +251,7 @@ void CSkyDomeSceneNode::serializeAttributes(io::IAttributes* out, io::SAttribute
out->addFloat("Radius", Radius); out->addFloat("Radius", Radius);
} }
//! Reads attributes of the scene node. //! Reads attributes of the scene node.
void CSkyDomeSceneNode::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options) void CSkyDomeSceneNode::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
{ {