WebSVN – Games.Carmageddon – Blame – /src/BRSRC13/CORE/PIXELMAP/genclip.c

Rev	Author	Line No.	Line
20	pmbaty	1	#include "genclip.h"
		2	#include "harness/trace.h"
		3
		4	// IDA: br_clip_result __cdecl PixelmapPointClip(br_point out, br_point in, br_pixelmap *pm)
		5	br_clip_result PixelmapPointClip(br_point* out, br_point* in, br_pixelmap* pm) {
		6	LOG_TRACE("(%p, %p, %p)", out, in, pm);
		7
		8	out->x = in->x + pm->origin_x;
		9	out->y = in->y + pm->origin_y;
		10
		11	if (out->x < 0) {
		12	return BR_CLIP_REJECT;
		13	}
		14	if (out->y < 0) {
		15	return BR_CLIP_REJECT;
		16	}
		17	if (out->x >= pm->width) {
		18	return BR_CLIP_REJECT;
		19	}
		20	if (out->y >= pm->height) {
		21	return BR_CLIP_REJECT;
		22	}
		23	return BR_CLIP_ACCEPT;
		24	}
		25
		26	// IDA: br_clip_result __cdecl PixelmapLineClip(br_point s_out, br_point e_out, br_point s_in, br_point e_in, br_pixelmap *pm)
		27	br_clip_result PixelmapLineClip(br_point* s_out, br_point* e_out, br_point* s_in, br_point* e_in, br_pixelmap* pm) {
		28	int temp;
		29	br_int_32 w;
		30	br_int_32 h;
		31	br_int_32 x1;
		32	br_int_32 x2;
		33	br_int_32 y1;
		34	br_int_32 y2;
		35	LOG_TRACE("(%p, %p, %p, %p, %p)", s_out, e_out, s_in, e_in, pm);
		36
		37	x1 = s_in->x + pm->origin_x;
		38	x2 = e_in->x + pm->origin_x;
		39	y1 = s_in->y + pm->origin_y;
		40	y2 = e_in->y + pm->origin_y;
		41	w = pm->width - 1;
		42	h = pm->height - 1;
		43	if (x2 < x1) {
		44	temp = x2;
		45	x2 = x1;
		46	x1 = temp;
		47	temp = y2;
		48	y2 = y1;
		49	y1 = temp;
		50	}
		51	if (x2 >= 0 && x1 <= w) {
		52	if (y1 < y2) {
		53	if (y2 >= 0 && y1 <= h) {
		54	if (y1 < 0) {
		55	x1 -= (x2 - x1) * y1 / (y2 - y1);
		56	if (w < x1) {
		57	return BR_CLIP_REJECT;
		58	}
		59	y1 = 0;
		60	}
		61	if (y2 <= h) {
		62	incr_p2:
		63	if (x1 < 0) {
		64	y1 -= (y2 - y1) * x1 / (x2 - x1);
		65	x1 = 0;
		66	}
		67	if (w < x2) {
		68	y2 -= (x2 - w) * (y2 - y1) / (x2 - x1);
		69	x2 = w;
		70	}
		71	s_out->x = x1;
		72	s_out->y = y1;
		73	e_out->x = x2;
		74	e_out->y = y2;
		75	return BR_CLIP_PARTIAL;
		76	} else {
		77	x2 -= (y2 - h) * (x2 - x1) / (y2 - y1);
		78	y2 = h;
		79	if (0 <= x2) {
		80	goto incr_p2;
		81	}
		82	}
		83	}
		84	} else {
		85	if (0 <= y1 && y2 <= h) {
		86	if (y1 <= h) {
		87	decr_p1:
		88	if (y2 < 0) {
		89	x2 -= (x2 - x1) * y2 / (y2 - y1);
		90	if (x2 < 0) {
		91	return BR_CLIP_REJECT;
		92	}
		93	y2 = 0;
		94	}
		95	if (x1 < 0) {
		96	y1 -= (y2 - y1) * x1 / (x2 - x1);
		97	x1 = 0;
		98	}
		99	if (w < x2) {
		100	y2 -= (x2 - w) * (y2 - y1) / (x2 - x1);
		101	x2 = w;
		102	}
		103	s_out->x = x1;
		104	s_out->y = y1;
		105	e_out->x = x2;
		106	e_out->y = y2;
		107	return BR_CLIP_PARTIAL;
		108	} else {
		109	x1 += (h - y1) * (x2 - x1) / (y2 - y1);
		110	y1 = h;
		111	if (x1 <= w) {
		112	goto decr_p1;
		113	}
		114	}
		115	}
		116	}
		117	}
		118	return BR_CLIP_REJECT;
		119	}
		120
		121	// IDA: br_clip_result __cdecl PixelmapRectangleClip(br_rectangle out, br_rectangle in, br_pixelmap *pm)
		122	br_clip_result PixelmapRectangleClip(br_rectangle* out, br_rectangle* in, br_pixelmap* pm) {
		123	LOG_TRACE("(%p, %p, %p)", out, in, pm);
		124
		125	out->x = pm->origin_x + in->x;
		126	out->y = pm->origin_y + in->y;
		127	out->w = in->w;
		128	out->h = in->h;
		129	if (pm->width > out->x && pm->height > out->y) {
		130	if ((out->x + out->w) > 0 && (out->y + out->h) > 0) {
		131	if (out->x < 0) {
		132	out->x = 0;
		133	out->w += out->x;
		134	}
		135	if (out->y < 0) {
		136	out->y = 0;
		137	out->h += out->y;
		138	}
		139	if ((out->x + out->w) > pm->width)
		140	out->w = pm->width - out->x;
		141	if ((out->y + out->h) > pm->height) {
		142	out->h = pm->height - out->y;
		143	}
		144	if (out->w != 0 && out->h != 0) {
		145	return BR_CLIP_PARTIAL;
		146	}
		147	}
		148	}
		149	return BR_CLIP_REJECT;
		150	}
		151
		152	// IDA: br_clip_result __cdecl PixelmapRectangleClipTwo(br_rectangle r_out, br_point p_out, br_rectangle r_in, br_point p_in, br_pixelmap pm_dst, br_pixelmap pm_src)
		153	br_clip_result PixelmapRectangleClipTwo(br_rectangle* r_out, br_point* p_out, br_rectangle* r_in, br_point* p_in, br_pixelmap* pm_dst, br_pixelmap* pm_src) {
		154	LOG_TRACE("(%p, %p, %p, %p, %p, %p)", r_out, p_out, r_in, p_in, pm_dst, pm_src);
		155
		156	r_out->x = pm_src->origin_x + r_in->x;
		157	r_out->y = pm_src->origin_y + r_in->y;
		158	r_out->w = r_in->w;
		159	r_out->h = r_in->h;
		160	p_out->x = pm_dst->origin_x + p_in->x;
		161	p_out->y = pm_dst->origin_y + p_in->y;
		162
		163	if (p_out->x >= pm_dst->width) {
		164	return BR_CLIP_REJECT;
		165	}
		166	if (p_out->y >= pm_dst->height) {
		167	return BR_CLIP_REJECT;
		168	}
		169	if (r_out->x >= pm_src->width) {
		170	return BR_CLIP_REJECT;
		171	}
		172	if (r_out->y >= pm_src->height) {
		173	return BR_CLIP_REJECT;
		174	}
		175	if (p_out->x + r_out->w <= 0) {
		176	return BR_CLIP_REJECT;
		177	}
		178	if (p_out->y + r_out->h <= 0) {
		179	return BR_CLIP_REJECT;
		180	}
		181	if (r_out->x + r_out->w <= 0) {
		182	return BR_CLIP_REJECT;
		183	}
		184	if (r_out->y + r_out->h <= 0) {
		185	return BR_CLIP_REJECT;
		186	}
		187	if (p_out->x < 0) {
		188	r_out->w += p_out->x;
		189	r_out->x -= p_out->x;
		190	p_out->x = 0;
		191	}
		192	if (p_out->y < 0) {
		193	r_out->h += p_out->y;
		194	r_out->y -= p_out->y;
		195	p_out->y = 0;
		196	}
		197	if (p_out->x + r_out->w > pm_dst->width) {
		198	r_out->w = pm_dst->width - p_out->x;
		199	}
		200	if (p_out->y + r_out->h > pm_dst->height) {
		201	r_out->h = pm_dst->height - p_out->y;
		202	}
		203	if (r_out->x < 0) {
		204	r_out->w += r_out->x;
		205	p_out->x -= r_out->x;
		206	r_out->x = 0;
		207	}
		208	if (r_out->y < 0) {
		209	r_out->h += r_out->y;
		210	p_out->y -= r_out->y;
		211	r_out->y = 0;
		212	}
		213	if (r_out->x + r_out->w > pm_src->width) {
		214	r_out->w = pm_src->width - r_out->x;
		215	}
		216	if (r_out->y + r_out->h > pm_src->height) {
		217	r_out->h = pm_src->height - r_out->y;
		218	}
		219	if (r_out->w == 0 \|\| r_out->h == 0) {
		220	return BR_CLIP_REJECT;
		221	}
		222	return BR_CLIP_PARTIAL;
		223	}
		224
		225	// IDA: br_clip_result __cdecl PixelmapCopyBitsClip(br_rectangle r_out, br_point p_out, br_rectangle r_in, br_point p_in, br_pixelmap *pm)
		226	br_clip_result PixelmapCopyBitsClip(br_rectangle* r_out, br_point* p_out, br_rectangle* r_in, br_point* p_in, br_pixelmap* pm) {
		227	LOG_TRACE("(%p, %p, %p, %p, %p)", r_out, p_out, r_in, p_in, pm);
		228
		229	r_out->x = r_in->x;
		230	r_out->y = r_in->y;
		231	r_out->w = r_in->w;
		232	r_out->h = r_in->h;
		233	p_out->x = pm->origin_x + p_in->x;
		234	p_out->y = pm->origin_y + p_in->y;
		235
		236	if (p_out->x >= pm->width) {
		237	return BR_CLIP_REJECT;
		238	}
		239	if (p_out->y >= pm->height) {
		240	return BR_CLIP_REJECT;
		241	}
		242	if (p_out->x + r_out->w <= 0) {
		243	return BR_CLIP_REJECT;
		244	}
		245	if (p_out->y + r_out->h <= 0) {
		246	return BR_CLIP_REJECT;
		247	}
		248	if (p_out->x < 0) {
		249	r_out->w += p_out->x;
		250	r_out->x -= p_out->x;
		251	p_out->x = 0;
		252	}
		253	if (p_out->y < 0) {
		254	r_out->h += p_out->y;
		255	r_out->y -= p_out->y;
		256	p_out->y = 0;
		257	}
		258	if (p_out->x + r_out->w > pm->width) {
		259	r_out->w = pm->width - p_out->x;
		260	}
		261	if (p_out->y + r_out->h > pm->height) {
		262	r_out->h = pm->height - p_out->y;
		263	}
		264	if (r_out->w == 0 \|\| r_out->h == 0) {
		265	return BR_CLIP_REJECT;
		266	}
		267	return BR_CLIP_PARTIAL;
		268	}

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Games.Carmageddon/src/BRSRC13/CORE/PIXELMAP/genclip.c – Rev 20