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## comptran.pi -
## Test matrix utility functions pcompose_tran_matrix, pcompose_tran_matrix3
## Test using different 
##   matrices: non-identity
##   reference points: origin,non-origin
##   tranlation vectors: some values
##   scaling vectors: some values
##   rotation angles: some values
## The resulting matrix from the utility is compared to the matrix 
## from the same operation performed in the test code.

source macro.pi
tbegintest("comptran","compose transformation utilities");

# SETUP: open phigs
i_open_phigs(NULL,PDEF_MEM_SIZE);

# INITIALIZE: matrices
I_Pmatrix(mtx1, 0.0,0.1,0.1,
		1.0,0.0,0.3,
		-2.0,0.5,1.0);
I_Pmatrix3(mtx31, 0.0,0.1,0.1,-1.0,
		1.0,0.0,0.3,0.0,
		-2.0,0.5,1.0,0.8,
		0.0,0.0,1.0,1.0);


foreach @rx @ry @rz @tx @ty @tz @sx @sy @sz @xang @yang @zang (
	0.0;0.0;0.0; 0.5; 1.0; 0.3; 0.5; 0.25;0.35; 1.25; 0.0; -1.0;
	-1.0;1.0;0.5; -1.0;0.5;-0.1; 2.0;2.5;3.0; -0.1; 3.14; 1.0;
	)
	# INITIALIZE: 2D scale and translate vectors
	xlate = I_Pvec(@tx,@ty);
	scale = I_Pvec(@sx,@sy);
        ref   = I_Ppoint(@rx,@ry);


	# OPERATION: pbuild_tran_matrix
	err = i_bogus_error();
	pcompose_tran_matrix(mtx1,&ref,&xlate,@zang,&scale,&err,mtx2);
	im_ifneq(err,0,"ERROR: %d in pcompose_tran_matrix",err);

	# VERIFICATION: verify the resulting 2D mtx
	i_composetran(mtx1,ref,xlate,@zang,scale,mtx3);
	status = i_compare_Pmatrix(mtx2,mtx3);
	if (status != 1) 
		tvprintf(1,"reference point (%.2f,%.2f),xlate(%.2f,%.2f)\n",
			@rx,@ry,@tx,@ty);
		tvprintf(1,"rotate angle(%.4f),scale(%.2f,%.2f)\n",
			@zang,@sx,@sy);
		tfprintf("failed: pcompose_tran_matrix,resulting mtx!=expected\n",NULL);
	endif

	# INITIALIZE: 3D scale and translate vectors
	xlate3 = I_Pvec3(@tx,@ty,@tz);
	scale3 = I_Pvec3(@sx,@sy,@sz);
        ref3   = I_Ppoint3(@rx,@ry,@rz);

	# OPERATION: pbuild_tran_matrix3
	err = i_bogus_error();
	pcompose_tran_matrix3(mtx31,&ref3,&xlate3,@xang,@yang,@zang,&scale3,&err,mtx32);
	im_ifneq(err,0,"ERROR: %d in pcompose_tran_matrix",err);

	# VERIFICATION: verify the resulting 3D mtx
	i_composetran3(mtx31,ref3,xlate3,@xang,@yang,@zang,scale3,mtx33);
	status = i_compare_Pmatrix3(mtx32,mtx33);
	if (status != 1) 
		tvprintf(1,"ref pt(%.2f,%.2f,%.2f),xlate(%.2f,%.2f,%.2f)\n",
			@rx,@ry,@rz,@tx,@ty,@tz);
		tvprintf(1,"rotate ang(%.4f,%.4f,%4f),scale(%.2f,%.2f,%.2f)\n",
			@xang,@yang,@zang,@sx,@sy,@sz);
		tfprintf("failed: pcompose_tran_matrix3, resulting mtx != expected\n",
			NULL);
	endif
end

tendtest()