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#include "../primitive_common.h"
void
_set_default_cylinder(Evas_Canvas3D_Mesh *mesh,
int frame,
int p,
Eina_Vector2 tex_scale)
{
int vcount, icount, vccount, i, j, num;
icount = p * 30;
vccount = p + 1;
vcount = 6 * vccount;
ALLOCATE_VERTEX_DATA
double dfi, fi, sinfi, cosfi;
dfi = 2 * M_PI / p;
for (i = 0; i < vccount; i++)
{
fi = i * dfi;
sinfi = sin(fi);
cosfi = cos(fi);
for (j = 0; j < 6; j++)
{
num = i + j * vccount;
vertices[num].z = -0.5 + (float)(j / 3);
if ((j == 0) || (j == 5))
{
vertices[num].x = vertices[num].y = 0.0;
}
else
{
vertices[num].x = sinfi / 2.0;
vertices[num].y = cosfi / 2.0;
}
if ((j == 2) || (j == 3))
{
normals[num].x = sinfi;
normals[num].y = cosfi;
normals[num].z = 0.0;
}
else
{
normals[num].x = normals[num].y = 0.0;
normals[num].z = -1.0 + (float)(j / 2);
}
tangents[num].x = cosfi;
tangents[num].y = -sinfi;
tangents[num].z = 0.0;
tex_coord[num].x = i / (float)(vccount - 1) * tex_scale.x;
tex_coord[num].y = (float)((j + 1) / 2) * tex_scale.y / 3.0;
}
}
_generate_indices(indices, p, 5);
SET_VERTEX_DATA(frame)
}
void
_set_cylinder_without_bases(Evas_Canvas3D_Mesh *mesh,
int frame,
int p,
Eina_Vector2 tex_scale)
{
int vcount, icount, vccount, i;
icount = p * 6;
vccount = p + 1;
vcount = 2 * vccount;
ALLOCATE_VERTEX_DATA
double dfi, fi, sinfi, cosfi;
dfi = 2 * M_PI / p;
for (i = 0; i < vccount; i++)
{
fi = i * dfi;
sinfi = sin(fi);
cosfi = cos(fi);
vertices[i + vccount].x = vertices[i].x = sinfi / 2.0;
vertices[i + vccount].y = vertices[i].y = cosfi / 2.0;
vertices[i].z = -0.5;
vertices[i + vccount].z = 0.5;
normals[i + vccount].x = normals[i].x = sinfi;
normals[i + vccount].y = normals[i].y = cosfi;
normals[i + vccount].z = normals[i].z = 0;
tangents[i + vccount].x = tangents[i].x = cosfi;
tangents[i + vccount].y = tangents[i].y = -sinfi;
tangents[i + vccount].z = tangents[i].z = 0;
tex_coord[i].x = i / (float)(vccount - 1) * tex_scale.x;
tex_coord[i].y = 0;
tex_coord[i + vccount].x = i / (float)(vccount - 1) * tex_scale.x;
tex_coord[i + vccount].y = tex_scale.y;
}
_generate_indices(indices, p, 1);
SET_VERTEX_DATA(frame)
}
void
evas_model_set_from_cylinder_primitive(Evas_Canvas3D_Mesh *mesh,
int frame,
Evas_Canvas3D_Primitive_Mode mode,
int p,
Eina_Vector2 tex_scale)
{
switch (mode)
{
case EVAS_CANVAS3D_PRIMITIVE_MODE_DEFAULT:
case EVAS_CANVAS3D_PRIMITIVE_MODE_ALTERNATIVE_UV:
{
_set_default_cylinder(mesh, frame, p, tex_scale);
break;
}
case EVAS_CANVAS3D_PRIMITIVE_MODE_WITHOUT_BASE:
{
_set_cylinder_without_bases(mesh, frame, p, tex_scale);
break;
}
default:
{
ERR("Unknown mode of primitive");
}
}
}
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