minetest/src/mesh.cpp

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/*
2013-02-24 18:40:43 +01:00
Minetest
2013-02-24 19:38:45 +01:00
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "mesh.h"
#include "debug.h"
#include "log.h"
#include <iostream>
#include <IAnimatedMesh.h>
#include <SAnimatedMesh.h>
// In Irrlicht 1.8 the signature of ITexture::lock was changed from
// (bool, u32) to (E_TEXTURE_LOCK_MODE, u32).
#if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR <= 7
#define MY_ETLM_READ_ONLY true
#else
#define MY_ETLM_READ_ONLY video::ETLM_READ_ONLY
#endif
scene::IAnimatedMesh* createCubeMesh(v3f scale)
{
video::SColor c(255,255,255,255);
video::S3DVertex vertices[24] =
{
// Up
video::S3DVertex(-0.5,+0.5,-0.5, 0,1,0, c, 0,1),
video::S3DVertex(-0.5,+0.5,+0.5, 0,1,0, c, 0,0),
video::S3DVertex(+0.5,+0.5,+0.5, 0,1,0, c, 1,0),
video::S3DVertex(+0.5,+0.5,-0.5, 0,1,0, c, 1,1),
// Down
video::S3DVertex(-0.5,-0.5,-0.5, 0,-1,0, c, 0,0),
video::S3DVertex(+0.5,-0.5,-0.5, 0,-1,0, c, 1,0),
video::S3DVertex(+0.5,-0.5,+0.5, 0,-1,0, c, 1,1),
video::S3DVertex(-0.5,-0.5,+0.5, 0,-1,0, c, 0,1),
// Right
video::S3DVertex(+0.5,-0.5,-0.5, 1,0,0, c, 0,1),
video::S3DVertex(+0.5,+0.5,-0.5, 1,0,0, c, 0,0),
video::S3DVertex(+0.5,+0.5,+0.5, 1,0,0, c, 1,0),
video::S3DVertex(+0.5,-0.5,+0.5, 1,0,0, c, 1,1),
// Left
video::S3DVertex(-0.5,-0.5,-0.5, -1,0,0, c, 1,1),
video::S3DVertex(-0.5,-0.5,+0.5, -1,0,0, c, 0,1),
video::S3DVertex(-0.5,+0.5,+0.5, -1,0,0, c, 0,0),
video::S3DVertex(-0.5,+0.5,-0.5, -1,0,0, c, 1,0),
// Back
video::S3DVertex(-0.5,-0.5,+0.5, 0,0,1, c, 1,1),
video::S3DVertex(+0.5,-0.5,+0.5, 0,0,1, c, 0,1),
video::S3DVertex(+0.5,+0.5,+0.5, 0,0,1, c, 0,0),
video::S3DVertex(-0.5,+0.5,+0.5, 0,0,1, c, 1,0),
// Front
video::S3DVertex(-0.5,-0.5,-0.5, 0,0,-1, c, 0,1),
video::S3DVertex(-0.5,+0.5,-0.5, 0,0,-1, c, 0,0),
video::S3DVertex(+0.5,+0.5,-0.5, 0,0,-1, c, 1,0),
video::S3DVertex(+0.5,-0.5,-0.5, 0,0,-1, c, 1,1),
};
u16 indices[6] = {0,1,2,2,3,0};
scene::SMesh *mesh = new scene::SMesh();
for (u32 i=0; i<6; ++i)
{
scene::IMeshBuffer *buf = new scene::SMeshBuffer();
buf->append(vertices + 4 * i, 4, indices, 6);
// Set default material
buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
// Add mesh buffer to mesh
mesh->addMeshBuffer(buf);
buf->drop();
}
scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(mesh);
mesh->drop();
scaleMesh(anim_mesh, scale); // also recalculates bounding box
return anim_mesh;
}
static scene::IAnimatedMesh* extrudeARGB(u32 twidth, u32 theight, u8 *data)
{
const s32 argb_wstep = 4 * twidth;
const s32 alpha_threshold = 1;
scene::IMeshBuffer *buf = new scene::SMeshBuffer();
video::SColor c(255,255,255,255);
// Front and back
{
video::S3DVertex vertices[8] =
{
video::S3DVertex(-0.5,-0.5,-0.5, 0,0,-1, c, 0,1),
video::S3DVertex(-0.5,+0.5,-0.5, 0,0,-1, c, 0,0),
video::S3DVertex(+0.5,+0.5,-0.5, 0,0,-1, c, 1,0),
video::S3DVertex(+0.5,-0.5,-0.5, 0,0,-1, c, 1,1),
video::S3DVertex(+0.5,-0.5,+0.5, 0,0,+1, c, 1,1),
video::S3DVertex(+0.5,+0.5,+0.5, 0,0,+1, c, 1,0),
video::S3DVertex(-0.5,+0.5,+0.5, 0,0,+1, c, 0,0),
video::S3DVertex(-0.5,-0.5,+0.5, 0,0,+1, c, 0,1),
};
u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
buf->append(vertices, 8, indices, 12);
}
// "Interior"
// (add faces where a solid pixel is next to a transparent one)
u8 *solidity = new u8[(twidth+2) * (theight+2)];
u32 wstep = twidth + 2;
for (u32 y = 0; y < theight + 2; ++y)
{
u8 *scanline = solidity + y * wstep;
if (y == 0 || y == theight + 1)
{
for (u32 x = 0; x < twidth + 2; ++x)
scanline[x] = 0;
}
else
{
scanline[0] = 0;
u8 *argb_scanline = data + (y - 1) * argb_wstep;
for (u32 x = 0; x < twidth; ++x)
scanline[x+1] = (argb_scanline[x*4+3] >= alpha_threshold);
scanline[twidth + 1] = 0;
}
}
// without this, there would be occasional "holes" in the mesh
f32 eps = 0.01;
for (u32 y = 0; y <= theight; ++y)
{
u8 *scanline = solidity + y * wstep + 1;
for (u32 x = 0; x <= twidth; ++x)
{
if (scanline[x] && !scanline[x + wstep])
{
u32 xx = x + 1;
while (scanline[xx] && !scanline[xx + wstep])
++xx;
f32 vx1 = (x - eps) / (f32) twidth - 0.5;
f32 vx2 = (xx + eps) / (f32) twidth - 0.5;
f32 vy = 0.5 - (y - eps) / (f32) theight;
f32 tx1 = x / (f32) twidth;
f32 tx2 = xx / (f32) twidth;
f32 ty = (y - 0.5) / (f32) theight;
video::S3DVertex vertices[8] =
{
video::S3DVertex(vx1,vy,-0.5, 0,-1,0, c, tx1,ty),
video::S3DVertex(vx2,vy,-0.5, 0,-1,0, c, tx2,ty),
video::S3DVertex(vx2,vy,+0.5, 0,-1,0, c, tx2,ty),
video::S3DVertex(vx1,vy,+0.5, 0,-1,0, c, tx1,ty),
};
u16 indices[6] = {0,1,2,2,3,0};
buf->append(vertices, 4, indices, 6);
x = xx - 1;
}
if (!scanline[x] && scanline[x + wstep])
{
u32 xx = x + 1;
while (!scanline[xx] && scanline[xx + wstep])
++xx;
f32 vx1 = (x - eps) / (f32) twidth - 0.5;
f32 vx2 = (xx + eps) / (f32) twidth - 0.5;
f32 vy = 0.5 - (y + eps) / (f32) theight;
f32 tx1 = x / (f32) twidth;
f32 tx2 = xx / (f32) twidth;
f32 ty = (y + 0.5) / (f32) theight;
video::S3DVertex vertices[8] =
{
video::S3DVertex(vx1,vy,-0.5, 0,1,0, c, tx1,ty),
video::S3DVertex(vx1,vy,+0.5, 0,1,0, c, tx1,ty),
video::S3DVertex(vx2,vy,+0.5, 0,1,0, c, tx2,ty),
video::S3DVertex(vx2,vy,-0.5, 0,1,0, c, tx2,ty),
};
u16 indices[6] = {0,1,2,2,3,0};
buf->append(vertices, 4, indices, 6);
x = xx - 1;
}
}
}
for (u32 x = 0; x <= twidth; ++x)
{
u8 *scancol = solidity + x + wstep;
for (u32 y = 0; y <= theight; ++y)
{
if (scancol[y * wstep] && !scancol[y * wstep + 1])
{
u32 yy = y + 1;
while (scancol[yy * wstep] && !scancol[yy * wstep + 1])
++yy;
f32 vx = (x - eps) / (f32) twidth - 0.5;
f32 vy1 = 0.5 - (y - eps) / (f32) theight;
f32 vy2 = 0.5 - (yy + eps) / (f32) theight;
f32 tx = (x - 0.5) / (f32) twidth;
f32 ty1 = y / (f32) theight;
f32 ty2 = yy / (f32) theight;
video::S3DVertex vertices[8] =
{
video::S3DVertex(vx,vy1,-0.5, 1,0,0, c, tx,ty1),
video::S3DVertex(vx,vy1,+0.5, 1,0,0, c, tx,ty1),
video::S3DVertex(vx,vy2,+0.5, 1,0,0, c, tx,ty2),
video::S3DVertex(vx,vy2,-0.5, 1,0,0, c, tx,ty2),
};
u16 indices[6] = {0,1,2,2,3,0};
buf->append(vertices, 4, indices, 6);
y = yy - 1;
}
if (!scancol[y * wstep] && scancol[y * wstep + 1])
{
u32 yy = y + 1;
while (!scancol[yy * wstep] && scancol[yy * wstep + 1])
++yy;
f32 vx = (x + eps) / (f32) twidth - 0.5;
f32 vy1 = 0.5 - (y - eps) / (f32) theight;
f32 vy2 = 0.5 - (yy + eps) / (f32) theight;
f32 tx = (x + 0.5) / (f32) twidth;
f32 ty1 = y / (f32) theight;
f32 ty2 = yy / (f32) theight;
video::S3DVertex vertices[8] =
{
video::S3DVertex(vx,vy1,-0.5, -1,0,0, c, tx,ty1),
video::S3DVertex(vx,vy2,-0.5, -1,0,0, c, tx,ty2),
video::S3DVertex(vx,vy2,+0.5, -1,0,0, c, tx,ty2),
video::S3DVertex(vx,vy1,+0.5, -1,0,0, c, tx,ty1),
};
u16 indices[6] = {0,1,2,2,3,0};
buf->append(vertices, 4, indices, 6);
y = yy - 1;
}
}
}
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delete[] solidity;
// Add to mesh
scene::SMesh *mesh = new scene::SMesh();
mesh->addMeshBuffer(buf);
buf->drop();
scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(mesh);
mesh->drop();
return anim_mesh;
}
scene::IAnimatedMesh* createExtrudedMesh(video::ITexture *texture,
video::IVideoDriver *driver, v3f scale)
{
scene::IAnimatedMesh *mesh = NULL;
core::dimension2d<u32> size = texture->getOriginalSize();
video::ECOLOR_FORMAT format = texture->getColorFormat();
if (format == video::ECF_A8R8G8B8)
{
// Texture is in the correct color format, we can pass it
// to extrudeARGB right away.
void *data = texture->lock(MY_ETLM_READ_ONLY);
if (data == NULL)
return NULL;
mesh = extrudeARGB(size.Width, size.Height, (u8*) data);
texture->unlock();
}
else
{
video::IImage *img1 = driver->createImageFromData(format, size, texture->lock(MY_ETLM_READ_ONLY));
if (img1 == NULL)
return NULL;
// img1 is in the texture's color format, convert to 8-bit ARGB
video::IImage *img2 = driver->createImage(video::ECF_A8R8G8B8, size);
if (img2 == NULL)
{
img1->drop();
return NULL;
}
img1->copyTo(img2);
img1->drop();
mesh = extrudeARGB(size.Width, size.Height, (u8*) img2->lock());
img2->unlock();
img2->drop();
}
// Set default material
mesh->getMeshBuffer(0)->getMaterial().setTexture(0, texture);
mesh->getMeshBuffer(0)->getMaterial().setFlag(video::EMF_LIGHTING, false);
mesh->getMeshBuffer(0)->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
mesh->getMeshBuffer(0)->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
scaleMesh(mesh, scale); // also recalculates bounding box
return mesh;
}
void scaleMesh(scene::IMesh *mesh, v3f scale)
{
if(mesh == NULL)
return;
core::aabbox3d<f32> bbox;
bbox.reset(0,0,0);
u16 mc = mesh->getMeshBufferCount();
for(u16 j=0; j<mc; j++)
{
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 vc = buf->getVertexCount();
for(u16 i=0; i<vc; i++)
{
vertices[i].Pos *= scale;
}
buf->recalculateBoundingBox();
// calculate total bounding box
if(j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
}
mesh->setBoundingBox(bbox);
}
void translateMesh(scene::IMesh *mesh, v3f vec)
{
if(mesh == NULL)
return;
core::aabbox3d<f32> bbox;
bbox.reset(0,0,0);
u16 mc = mesh->getMeshBufferCount();
for(u16 j=0; j<mc; j++)
{
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 vc = buf->getVertexCount();
for(u16 i=0; i<vc; i++)
{
vertices[i].Pos += vec;
}
buf->recalculateBoundingBox();
// calculate total bounding box
if(j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
}
mesh->setBoundingBox(bbox);
}
void setMeshColor(scene::IMesh *mesh, const video::SColor &color)
{
if(mesh == NULL)
return;
u16 mc = mesh->getMeshBufferCount();
for(u16 j=0; j<mc; j++)
{
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 vc = buf->getVertexCount();
for(u16 i=0; i<vc; i++)
{
vertices[i].Color = color;
}
}
}
void setMeshColorByNormalXYZ(scene::IMesh *mesh,
const video::SColor &colorX,
const video::SColor &colorY,
const video::SColor &colorZ)
{
if(mesh == NULL)
return;
u16 mc = mesh->getMeshBufferCount();
for(u16 j=0; j<mc; j++)
{
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 vc = buf->getVertexCount();
for(u16 i=0; i<vc; i++)
{
f32 x = fabs(vertices[i].Normal.X);
f32 y = fabs(vertices[i].Normal.Y);
f32 z = fabs(vertices[i].Normal.Z);
if(x >= y && x >= z)
vertices[i].Color = colorX;
else if(y >= z)
vertices[i].Color = colorY;
else
vertices[i].Color = colorZ;
}
}
}
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void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir)
{
int axisdir = facedir>>2;
facedir &= 0x03;
u16 mc = mesh->getMeshBufferCount();
for(u16 j = 0; j < mc; j++)
{
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 vc = buf->getVertexCount();
for(u16 i=0; i<vc; i++)
{
switch (axisdir)
{
case 0:
if(facedir == 1)
vertices[i].Pos.rotateXZBy(-90);
else if(facedir == 2)
vertices[i].Pos.rotateXZBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateXZBy(90);
break;
case 1: // z+
vertices[i].Pos.rotateYZBy(90);
if(facedir == 1)
vertices[i].Pos.rotateXYBy(90);
else if(facedir == 2)
vertices[i].Pos.rotateXYBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateXYBy(-90);
break;
case 2: //z-
vertices[i].Pos.rotateYZBy(-90);
if(facedir == 1)
vertices[i].Pos.rotateXYBy(-90);
else if(facedir == 2)
vertices[i].Pos.rotateXYBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateXYBy(90);
break;
case 3: //x+
vertices[i].Pos.rotateXYBy(-90);
if(facedir == 1)
vertices[i].Pos.rotateYZBy(90);
else if(facedir == 2)
vertices[i].Pos.rotateYZBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateYZBy(-90);
break;
case 4: //x-
vertices[i].Pos.rotateXYBy(90);
if(facedir == 1)
vertices[i].Pos.rotateYZBy(-90);
else if(facedir == 2)
vertices[i].Pos.rotateYZBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateYZBy(90);
break;
case 5:
vertices[i].Pos.rotateXYBy(-180);
if(facedir == 1)
vertices[i].Pos.rotateXZBy(90);
else if(facedir == 2)
vertices[i].Pos.rotateXZBy(180);
else if(facedir == 3)
vertices[i].Pos.rotateXZBy(-90);
break;
default:
break;
}
}
}
}
void recalculateBoundingBox(scene::IMesh *src_mesh)
{
core::aabbox3d<f32> bbox;
bbox.reset(0,0,0);
for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
{
scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
buf->recalculateBoundingBox();
if(j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
}
src_mesh->setBoundingBox(bbox);
}
scene::IMesh* cloneMesh(scene::IMesh *src_mesh)
{
scene::SMesh* dst_mesh = new scene::SMesh();
for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
{
scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
u16 *indices = (u16*)buf->getIndices();
scene::SMeshBuffer *temp_buf = new scene::SMeshBuffer();
temp_buf->append(vertices, buf->getVertexCount(),
indices, buf->getIndexCount());
dst_mesh->addMeshBuffer(temp_buf);
temp_buf->drop();
}
return dst_mesh;
}
scene::IMesh* convertNodeboxNodeToMesh(ContentFeatures *f)
{
scene::SMesh* dst_mesh = new scene::SMesh();
for (u16 j = 0; j < 6; j++)
{
scene::IMeshBuffer *buf = new scene::SMeshBuffer();
dst_mesh->addMeshBuffer(buf);
buf->drop();
}
video::SColor c(255,255,255,255);
std::vector<aabb3f> boxes = f->node_box.fixed;
for(std::vector<aabb3f>::iterator
i = boxes.begin();
i != boxes.end(); i++)
{
aabb3f box = *i;
f32 temp;
if (box.MinEdge.X > box.MaxEdge.X)
{
temp=box.MinEdge.X;
box.MinEdge.X=box.MaxEdge.X;
box.MaxEdge.X=temp;
}
if (box.MinEdge.Y > box.MaxEdge.Y)
{
temp=box.MinEdge.Y;
box.MinEdge.Y=box.MaxEdge.Y;
box.MaxEdge.Y=temp;
}
if (box.MinEdge.Z > box.MaxEdge.Z)
{
temp=box.MinEdge.Z;
box.MinEdge.Z=box.MaxEdge.Z;
box.MaxEdge.Z=temp;
}
// Compute texture coords
f32 tx1 = (box.MinEdge.X/BS)+0.5;
f32 ty1 = (box.MinEdge.Y/BS)+0.5;
f32 tz1 = (box.MinEdge.Z/BS)+0.5;
f32 tx2 = (box.MaxEdge.X/BS)+0.5;
f32 ty2 = (box.MaxEdge.Y/BS)+0.5;
f32 tz2 = (box.MaxEdge.Z/BS)+0.5;
f32 txc[24] = {
// up
tx1, 1-tz2, tx2, 1-tz1,
// down
tx1, tz1, tx2, tz2,
// right
tz1, 1-ty2, tz2, 1-ty1,
// left
1-tz2, 1-ty2, 1-tz1, 1-ty1,
// back
1-tx2, 1-ty2, 1-tx1, 1-ty1,
// front
tx1, 1-ty2, tx2, 1-ty1,
};
v3f min = box.MinEdge;
v3f max = box.MaxEdge;
video::S3DVertex vertices[24] =
{
// up
video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
// down
video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
// right
video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
// left
video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
// back
video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
// front
video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
};
u16 indices[] = {0,1,2,2,3,0};
for(u16 j = 0; j < 24; j += 4)
{
scene::IMeshBuffer *buf = dst_mesh->getMeshBuffer(j / 4);
buf->append(vertices + j, 4, indices, 6);
}
}
return dst_mesh;
}