axmol/cocos/editor-support/spine/RegionAttachment.cpp

/******************************************************************************
 * Spine Runtime Software License - Version 1.1
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms in whole or in part, with
 * or without modification, are permitted provided that the following conditions
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 * 
 * 1. A Spine Essential, Professional, Enterprise, or Education License must
 *    be purchased from Esoteric Software and the license must remain valid:
 *    http://esotericsoftware.com/
 * 2. Redistributions of source code must retain this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer.
 * 3. Redistributions in binary form must reproduce this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer, in the documentation and/or other materials provided with the
 *    distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#include <spine/RegionAttachment.h>
#include <spine/extension.h>

void _spRegionAttachment_dispose (spAttachment* attachment) {
	spRegionAttachment* self = SUB_CAST(spRegionAttachment, attachment);

	_spAttachment_deinit(attachment);

	FREE(self);
}

spRegionAttachment* spRegionAttachment_create (const char* name) {
	spRegionAttachment* self = NEW(spRegionAttachment);
	self->scaleX = 1;
	self->scaleY = 1;
	_spAttachment_init(SUPER(self), name, ATTACHMENT_REGION, _spRegionAttachment_dispose);
	return self;
}

void spRegionAttachment_setUVs (spRegionAttachment* self, float u, float v, float u2, float v2, int/*bool*/rotate) {
	if (rotate) {
		self->uvs[VERTEX_X2] = u;
		self->uvs[VERTEX_Y2] = v2;
		self->uvs[VERTEX_X3] = u;
		self->uvs[VERTEX_Y3] = v;
		self->uvs[VERTEX_X4] = u2;
		self->uvs[VERTEX_Y4] = v;
		self->uvs[VERTEX_X1] = u2;
		self->uvs[VERTEX_Y1] = v2;
	} else {
		self->uvs[VERTEX_X1] = u;
		self->uvs[VERTEX_Y1] = v2;
		self->uvs[VERTEX_X2] = u;
		self->uvs[VERTEX_Y2] = v;
		self->uvs[VERTEX_X3] = u2;
		self->uvs[VERTEX_Y3] = v;
		self->uvs[VERTEX_X4] = u2;
		self->uvs[VERTEX_Y4] = v2;
	}
}

void spRegionAttachment_updateOffset (spRegionAttachment* self) {
	float regionScaleX = self->width / self->regionOriginalWidth * self->scaleX;
	float regionScaleY = self->height / self->regionOriginalHeight * self->scaleY;
	float localX = -self->width / 2 * self->scaleX + self->regionOffsetX * regionScaleX;
	float localY = -self->height / 2 * self->scaleY + self->regionOffsetY * regionScaleY;
	float localX2 = localX + self->regionWidth * regionScaleX;
	float localY2 = localY + self->regionHeight * regionScaleY;
	float radians = (float)(self->rotation * 3.1415926535897932385 / 180);
#ifdef __STDC_VERSION__
	float cosine = cosf(radians);
	float sine = sinf(radians);
#else
	float cosine = (float)cos(radians);
	float sine = (float)sin(radians);
#endif
	float localXCos = localX * cosine + self->x;
	float localXSin = localX * sine;
	float localYCos = localY * cosine + self->y;
	float localYSin = localY * sine;
	float localX2Cos = localX2 * cosine + self->x;
	float localX2Sin = localX2 * sine;
	float localY2Cos = localY2 * cosine + self->y;
	float localY2Sin = localY2 * sine;
	self->offset[VERTEX_X1] = localXCos - localYSin;
	self->offset[VERTEX_Y1] = localYCos + localXSin;
	self->offset[VERTEX_X2] = localXCos - localY2Sin;
	self->offset[VERTEX_Y2] = localY2Cos + localXSin;
	self->offset[VERTEX_X3] = localX2Cos - localY2Sin;
	self->offset[VERTEX_Y3] = localY2Cos + localX2Sin;
	self->offset[VERTEX_X4] = localX2Cos - localYSin;
	self->offset[VERTEX_Y4] = localYCos + localX2Sin;
}

void spRegionAttachment_computeWorldVertices (spRegionAttachment* self, float x, float y, spBone* bone, float* vertices) {
	float* offset = self->offset;
	x += bone->worldX;
	y += bone->worldY;
	vertices[VERTEX_X1] = offset[VERTEX_X1] * bone->m00 + offset[VERTEX_Y1] * bone->m01 + x;
	vertices[VERTEX_Y1] = offset[VERTEX_X1] * bone->m10 + offset[VERTEX_Y1] * bone->m11 + y;
	vertices[VERTEX_X2] = offset[VERTEX_X2] * bone->m00 + offset[VERTEX_Y2] * bone->m01 + x;
	vertices[VERTEX_Y2] = offset[VERTEX_X2] * bone->m10 + offset[VERTEX_Y2] * bone->m11 + y;
	vertices[VERTEX_X3] = offset[VERTEX_X3] * bone->m00 + offset[VERTEX_Y3] * bone->m01 + x;
	vertices[VERTEX_Y3] = offset[VERTEX_X3] * bone->m10 + offset[VERTEX_Y3] * bone->m11 + y;
	vertices[VERTEX_X4] = offset[VERTEX_X4] * bone->m00 + offset[VERTEX_Y4] * bone->m01 + x;
	vertices[VERTEX_Y4] = offset[VERTEX_X4] * bone->m10 + offset[VERTEX_Y4] * bone->m11 + y;
}