public static void push_object_transform( ClassTransformManager obj,
CompoundTransform transform)
{
if (object_transform_stack_count < TRANSFORM_STACK_SIZE)
{
CompoundTransformRow r0 = transform.property_r0;
CompoundTransformRow r1 = transform.property_r1;
object_transform_stack[object_transform_stack_count++] =
new Matrix2x3( r0.property_c0, r0.property_c1, r0.property_c2,
r1.property_c0, r1.property_c1, r1.property_c2 );
object_transform_stack_modified = true;
}
}
public static void pop_object_transform( ClassTransformManager obj )
{
if (--object_transform_stack_count < 0) object_transform_stack_count = 0;
object_transform_stack_modified = true;
}
public static CompoundTransform current( ClassTransformManager obj )
{
update();
return new CompoundTransform(
new CompoundTransformRow(transform.r1c1,transform.r1c2,transform.r1c3),
new CompoundTransformRow(transform.r2c1,transform.r2c2,transform.r2c3)
);
}
public static void pop_camera_transform( ClassTransformManager obj )
{
if (--camera_transform_stack_count < 0) camera_transform_stack_count = 0;
camera_transform_stack_modified = true;
}
public static CompoundTransform create_from( ClassTransformManager obj,
CompoundVector2 size, CompoundVector2 handle,
CompoundRadians angle, CompoundVector2 scale,
CompoundVector2 position,
bool hflip, bool vflip)
{
double handle_x = handle.property_x;
double handle_y = handle.property_y;
double size_x = size.property_x;
double size_y = size.property_y;
double scale_x = scale.property_x;
double scale_y = scale.property_y;
if (hflip || vflip)
{
handle_x -= size_x / 2.0;
handle_y -= size_y / 2.0;
}
double cost = Math.Cos(angle.property_value);
double sint = Math.Sin(angle.property_value);
double r1c1 = cost*scale_x;
double r1c2 = -sint*scale_y;
double r1c3 = position.property_x - scale_x*handle_x*cost + sint*scale_y*handle_y;
double r2c1 = sint*scale_x;
double r2c2 = cost*scale_y;
double r2c3 = position.property_y - scale_x*handle_x*sint - cost*scale_y*handle_y;
Matrix2x3 m = new Matrix2x3(r1c1,r1c2,r1c3,r2c1,r2c2,r2c3);
if (hflip || vflip)
{
if (hflip)
{
if (vflip)
{
m = m.times( new Matrix2x3(-1,0,0,0,-1,0) );
}
else
{
m = m.times( new Matrix2x3(-1,0,0,0,1,0) );
}
}
else
{
m = m.times( new Matrix2x3(1,0,0,0,-1,0) );
}
// translate by -size/2
m = m.times( new Matrix2x3(1,0,-size_x/2.0,0,1,-size_y/2.0) );
}
return new CompoundTransform(
new CompoundTransformRow(m.r1c1,m.r1c2,m.r1c3),
new CompoundTransformRow(m.r2c1,m.r2c2,m.r2c3)
);
}