/// <summary>
/// Makes a new quadrilateral using v0..3 as vertices in this order:
/// 1 - - 2
/// | / |
/// | / |
/// 0 - - 3
/// </summary>
/// <param name="v0">Vertex 0</param>
/// <param name="v1">Vertex 1</param>
/// <param name="v2">Vertex 2</param>
/// <param name="v3">Vertex 3</param>
/// <param name="blockID">The ID of the block that will set the color of the quad</param>
void NewQuadrilateral(Vector3 v0, Vector3 v1, Vector3 v2, Vector3 v3, int blockID)
{
int xOffset, yOffset;
Palette.ColorToCoord(IntArrayFromTexture.IntToColor(blockID), out xOffset, out yOffset);
//Offset is the center of the pixel color on the texture
Vector2 offset = new Vector2((float)xOffset * _tileWidth + _tileWidth * .5f, (float)yOffset * _tileHeight + _tileHeight * .5f);
_vertices.Add(v0);
_vertices.Add(v1);
_vertices.Add(v2);
_vertices.Add(v3);
_meshTris.Add(_quadCounter * 4 + 0);
_meshTris.Add(_quadCounter * 4 + 1);
_meshTris.Add(_quadCounter * 4 + 2);
_meshTris.Add(_quadCounter * 4 + 0);
_meshTris.Add(_quadCounter * 4 + 2);
_meshTris.Add(_quadCounter * 4 + 3);
//uvs coords are really close to "stretch" the texture a lot so only one pixel in the texture
//is enough to fill any quad with the same color
_uvs.Add(offset + new Vector2(0, 0));
_uvs.Add(offset + new Vector2(0, .0000001f));
_uvs.Add(offset + new Vector2(.0000001f, .0000001f));
_uvs.Add(offset + new Vector2(.0000001f, 0));
Vector3 side1 = v1 - v0;
Vector3 side2 = v3 - v0;
Vector3 normal = Vector3.Cross(side1, side2).normalized;
_normals.Add(normal);
_normals.Add(normal);
_normals.Add(normal);
_normals.Add(normal);
QuadCounter = _quadCounter + 1;
}
void SelectColor(Color color)
{
_previewImage.color = color;
paintingBlockID = IntArrayFromTexture.ColorToInt(color);
_colorDetailsText.text = IntArrayFromTexture.IntToColor(paintingBlockID).ToString() + "\t\tint(" + paintingBlockID.ToString() + ")";
}