public styles_gouraud(mesh_ctrl mesh, GammaLut gamma)
{
uint i;
for (i = 0; i < mesh.num_triangles(); i++)
{
mesh_triangle t = mesh.triangle(i);
mesh_point p1 = mesh.vertex(t.p1);
mesh_point p2 = mesh.vertex(t.p2);
mesh_point p3 = mesh.vertex(t.p3);
RGBA_Bytes c1 = p1.color;
RGBA_Bytes c2 = p2.color;
RGBA_Bytes c3 = p3.color;
c1.ApplyGammaDir(gamma);
c2.ApplyGammaDir(gamma);
c3.ApplyGammaDir(gamma);
SpanGouraudRgba <T> gouraud = new SpanGouraudRgba <T>(c1, c2, c3,
p1.x, p1.y,
p2.x, p2.y,
p3.x, p3.y);
gouraud.Prepare();
m_triangles.Add(gouraud);
}
}
public void generate(int cols, int rows,
T cell_w, T cell_h,
T start_x, T start_y)
{
m_cols = cols;
m_rows = rows;
m_cell_w = cell_w;
m_cell_h = cell_h;
m_start_x = start_x;
m_start_y = start_y;
m_vertices.RemoveAll();
for (int i = 0; i < m_rows; i++)
{
T x = start_x;
for (int j = 0; j < m_cols; j++)
{
T dx = M.New <T>(random(-0.5, 0.5));
T dy = M.New <T>(random(-0.5, 0.5));
RGBA_Bytes c = new RGBA_Bytes(rand.Next() & 0xFF, rand.Next() & 0xFF, rand.Next() & 0xFF);
RGBA_Bytes dc = new RGBA_Bytes(rand.Next() & 1, rand.Next() & 1, rand.Next() & 1);
m_vertices.Add(new mesh_point(x, start_y, dx, dy, c, dc));
x.AddEquals(cell_w);
}
start_y.AddEquals(cell_h);
}
// 4---3
// |t2/|
// | / |
// |/t1|
// 1---2
m_triangles.RemoveAll();
m_edges.RemoveAll();
for (int i = 0; i < m_rows - 1; i++)
{
for (int j = 0; j < m_cols - 1; j++)
{
int p1 = i * m_cols + j;
int p2 = p1 + 1;
int p3 = p2 + m_cols;
int p4 = p1 + m_cols;
m_triangles.Add(new mesh_triangle((uint)p1, (uint)p2, (uint)p3));
m_triangles.Add(new mesh_triangle((uint)p3, (uint)p4, (uint)p1));
int curr_cell = i * (m_cols - 1) + j;
int left_cell = j != 0 ? (int)(curr_cell - 1) : -1;
int bott_cell = i != 0 ? (int)(curr_cell - (m_cols - 1)) : -1;
int curr_t1 = curr_cell * 2;
int curr_t2 = curr_t1 + 1;
int left_t1 = (left_cell >= 0) ? left_cell * 2 : -1;
int left_t2 = (left_cell >= 0) ? left_t1 + 1 : -1;
int bott_t1 = (bott_cell >= 0) ? bott_cell * 2 : -1;
int bott_t2 = (bott_cell >= 0) ? bott_t1 + 1 : -1;
m_edges.Add(new mesh_edge((uint)p1, (uint)p2, curr_t1, bott_t2));
m_edges.Add(new mesh_edge((uint)p1, (uint)p3, curr_t2, curr_t1));
m_edges.Add(new mesh_edge((uint)p1, (uint)p4, left_t1, curr_t2));
if (j == m_cols - 2) // Last column
{
m_edges.Add(new mesh_edge((uint)p2, (uint)p3, curr_t1, -1));
}
if (i == m_rows - 2) // Last row
{
m_edges.Add(new mesh_edge((uint)p3, (uint)p4, curr_t2, -1));
}
}
}
}