mirror of https://github.com/axmolengine/axmol.git
444 lines
13 KiB
C++
444 lines
13 KiB
C++
/* Copyright (c) 2012 Scott Lembcke and Howling Moon Software
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* Copyright (c) 2012 cocos2d-x.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "CCDrawNode.h"
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#include "support/CCPointExtension.h"
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#include "shaders/CCShaderCache.h"
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#include "CCGL.h"
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NS_CC_BEGIN
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// ccVertex2F == CGPoint in 32-bits, but not in 64-bits (OS X)
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// that's why the "v2f" functions are needed
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static ccVertex2F v2fzero = {0.0f,0.0f};
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static inline ccVertex2F v2f(float x, float y)
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{
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ccVertex2F ret = {x, y};
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return ret;
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}
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static inline ccVertex2F v2fadd(const ccVertex2F &v0, const ccVertex2F &v1)
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{
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return v2f(v0.x+v1.x, v0.y+v1.y);
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}
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static inline ccVertex2F v2fsub(const ccVertex2F &v0, const ccVertex2F &v1)
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{
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return v2f(v0.x-v1.x, v0.y-v1.y);
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}
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static inline ccVertex2F v2fmult(const ccVertex2F &v, float s)
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{
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return v2f(v.x * s, v.y * s);
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}
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static inline ccVertex2F v2fperp(const ccVertex2F &p0)
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{
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return v2f(-p0.y, p0.x);
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}
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static inline ccVertex2F v2fneg(const ccVertex2F &p0)
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{
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return v2f(-p0.x, - p0.y);
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}
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static inline float v2fdot(const ccVertex2F &p0, const ccVertex2F &p1)
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{
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return p0.x * p1.x + p0.y * p1.y;
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}
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static inline ccVertex2F v2fforangle(float _a_)
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{
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return v2f(cosf(_a_), sinf(_a_));
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}
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static inline ccVertex2F v2fnormalize(const ccVertex2F &p)
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{
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CCPoint r = ccpNormalize(ccp(p.x, p.y));
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return v2f(r.x, r.y);
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}
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static inline ccVertex2F __v2f(const CCPoint &v)
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{
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//#ifdef __LP64__
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return v2f(v.x, v.y);
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// #else
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// return * ((ccVertex2F*) &v);
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// #endif
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}
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static inline ccTex2F __t(const ccVertex2F &v)
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{
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return *(ccTex2F*)&v;
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}
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// implementation of CCDrawNode
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CCDrawNode::CCDrawNode()
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: m_uVao(0)
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, m_uVbo(0)
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, m_uBufferCapacity(0)
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, m_nBufferCount(0)
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, m_pBuffer(NULL)
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, m_bDirty(false)
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{
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m_sBlendFunc.src = CC_BLEND_SRC;
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m_sBlendFunc.dst = CC_BLEND_DST;
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}
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CCDrawNode::~CCDrawNode()
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{
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free(m_pBuffer);
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m_pBuffer = NULL;
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glDeleteBuffers(1, &m_uVbo);
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m_uVbo = 0;
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#if CC_TEXTURE_ATLAS_USE_VAO
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glDeleteVertexArrays(1, &m_uVao);
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m_uVao = 0;
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#endif
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}
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CCDrawNode* CCDrawNode::create()
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{
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CCDrawNode* pRet = new CCDrawNode();
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if (pRet && pRet->init())
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{
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pRet->autorelease();
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}
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else
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{
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CC_SAFE_DELETE(pRet);
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}
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return pRet;
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}
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void CCDrawNode::ensureCapacity(unsigned int count)
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{
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if(m_nBufferCount + count > m_uBufferCapacity)
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{
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m_uBufferCapacity += MAX(m_uBufferCapacity, count);
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m_pBuffer = (ccV2F_C4B_T2F*)realloc(m_pBuffer, m_uBufferCapacity*sizeof(ccV2F_C4B_T2F));
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}
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}
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bool CCDrawNode::init()
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{
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m_sBlendFunc.src = CC_BLEND_SRC;
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m_sBlendFunc.dst = CC_BLEND_DST;
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setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(kCCShader_PositionLengthTexureColor));
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ensureCapacity(512);
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#if CC_TEXTURE_ATLAS_USE_VAO
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glGenVertexArrays(1, &m_uVao);
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ccGLBindVAO(m_uVao);
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#endif
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glGenBuffers(1, &m_uVbo);
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glBindBuffer(GL_ARRAY_BUFFER, m_uVbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(ccV2F_C4B_T2F)* m_uBufferCapacity, m_pBuffer, GL_STREAM_DRAW);
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glEnableVertexAttribArray(kCCVertexAttrib_Position);
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glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, vertices));
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glEnableVertexAttribArray(kCCVertexAttrib_Color);
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glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, colors));
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glEnableVertexAttribArray(kCCVertexAttrib_TexCoords);
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glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, texCoords));
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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#if CC_TEXTURE_ATLAS_USE_VAO
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ccGLBindVAO(0);
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#endif
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CHECK_GL_ERROR_DEBUG();
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m_bDirty = true;
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return true;
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}
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void CCDrawNode::render()
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{
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if (m_bDirty)
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{
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glBindBuffer(GL_ARRAY_BUFFER, m_uVbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(ccV2F_C4B_T2F)*m_uBufferCapacity, m_pBuffer, GL_STREAM_DRAW);
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m_bDirty = false;
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}
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#if CC_TEXTURE_ATLAS_USE_VAO
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ccGLBindVAO(m_uVao);
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#else
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ccGLEnableVertexAttribs(kCCVertexAttribFlag_PosColorTex);
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glBindBuffer(GL_ARRAY_BUFFER, m_uVbo);
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// vertex
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glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, vertices));
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// color
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glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, colors));
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// texcood
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glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, texCoords));
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#endif
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glDrawArrays(GL_TRIANGLES, 0, m_nBufferCount);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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CC_INCREMENT_GL_DRAWS(1);
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CHECK_GL_ERROR_DEBUG();
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}
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void CCDrawNode::draw()
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{
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ccGLBlendFunc(m_sBlendFunc.src, m_sBlendFunc.dst);
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getShaderProgram()->use();
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getShaderProgram()->setUniformsForBuiltins();
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render();
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}
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void CCDrawNode::drawDot(const CCPoint &pos, float radius, const ccColor4F &color)
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{
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unsigned int vertex_count = 2*3;
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ensureCapacity(vertex_count);
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ccV2F_C4B_T2F a = {{pos.x - radius, pos.y - radius}, ccc4BFromccc4F(color), {-1.0, -1.0} };
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ccV2F_C4B_T2F b = {{pos.x - radius, pos.y + radius}, ccc4BFromccc4F(color), {-1.0, 1.0} };
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ccV2F_C4B_T2F c = {{pos.x + radius, pos.y + radius}, ccc4BFromccc4F(color), { 1.0, 1.0} };
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ccV2F_C4B_T2F d = {{pos.x + radius, pos.y - radius}, ccc4BFromccc4F(color), { 1.0, -1.0} };
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ccV2F_C4B_T2F_Triangle *triangles = (ccV2F_C4B_T2F_Triangle *)(m_pBuffer + m_nBufferCount);
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ccV2F_C4B_T2F_Triangle triangle0 = {a, b, c};
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ccV2F_C4B_T2F_Triangle triangle1 = {a, c, d};
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triangles[0] = triangle0;
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triangles[1] = triangle1;
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m_nBufferCount += vertex_count;
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m_bDirty = true;
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}
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void CCDrawNode::drawSegment(const CCPoint &from, const CCPoint &to, float radius, const ccColor4F &color)
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{
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unsigned int vertex_count = 6*3;
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ensureCapacity(vertex_count);
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ccVertex2F a = __v2f(from);
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ccVertex2F b = __v2f(to);
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ccVertex2F n = v2fnormalize(v2fperp(v2fsub(b, a)));
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ccVertex2F t = v2fperp(n);
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ccVertex2F nw = v2fmult(n, radius);
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ccVertex2F tw = v2fmult(t, radius);
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ccVertex2F v0 = v2fsub(b, v2fadd(nw, tw));
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ccVertex2F v1 = v2fadd(b, v2fsub(nw, tw));
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ccVertex2F v2 = v2fsub(b, nw);
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ccVertex2F v3 = v2fadd(b, nw);
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ccVertex2F v4 = v2fsub(a, nw);
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ccVertex2F v5 = v2fadd(a, nw);
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ccVertex2F v6 = v2fsub(a, v2fsub(nw, tw));
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ccVertex2F v7 = v2fadd(a, v2fadd(nw, tw));
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ccV2F_C4B_T2F_Triangle *triangles = (ccV2F_C4B_T2F_Triangle *)(m_pBuffer + m_nBufferCount);
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ccV2F_C4B_T2F_Triangle triangles0 = {
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{v0, ccc4BFromccc4F(color), __t(v2fneg(v2fadd(n, t)))},
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{v1, ccc4BFromccc4F(color), __t(v2fsub(n, t))},
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{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
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};
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triangles[0] = triangles0;
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ccV2F_C4B_T2F_Triangle triangles1 = {
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{v3, ccc4BFromccc4F(color), __t(n)},
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{v1, ccc4BFromccc4F(color), __t(v2fsub(n, t))},
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{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
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};
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triangles[1] = triangles1;
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ccV2F_C4B_T2F_Triangle triangles2 = {
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{v3, ccc4BFromccc4F(color), __t(n)},
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{v4, ccc4BFromccc4F(color), __t(v2fneg(n))},
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{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
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};
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triangles[2] = triangles2;
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ccV2F_C4B_T2F_Triangle triangles3 = {
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{v3, ccc4BFromccc4F(color), __t(n)},
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{v4, ccc4BFromccc4F(color), __t(v2fneg(n))},
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{v5, ccc4BFromccc4F(color), __t(n) },
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};
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triangles[3] = triangles3;
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ccV2F_C4B_T2F_Triangle triangles4 = {
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{v6, ccc4BFromccc4F(color), __t(v2fsub(t, n))},
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{v4, ccc4BFromccc4F(color), __t(v2fneg(n)) },
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{v5, ccc4BFromccc4F(color), __t(n)},
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};
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triangles[4] = triangles4;
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ccV2F_C4B_T2F_Triangle triangles5 = {
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{v6, ccc4BFromccc4F(color), __t(v2fsub(t, n))},
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{v7, ccc4BFromccc4F(color), __t(v2fadd(n, t))},
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{v5, ccc4BFromccc4F(color), __t(n)},
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};
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triangles[5] = triangles5;
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m_nBufferCount += vertex_count;
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m_bDirty = true;
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}
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void CCDrawNode::drawPolygon(CCPoint *verts, unsigned int count, const ccColor4F &fillColor, float borderWidth, const ccColor4F &borderColor)
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{
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struct ExtrudeVerts {ccVertex2F offset, n;};
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struct ExtrudeVerts* extrude = (struct ExtrudeVerts*)malloc(sizeof(struct ExtrudeVerts)*count);
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memset(extrude, 0, sizeof(struct ExtrudeVerts)*count);
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for(unsigned int i = 0; i < count; i++)
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{
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ccVertex2F v0 = __v2f(verts[(i-1+count)%count]);
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ccVertex2F v1 = __v2f(verts[i]);
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ccVertex2F v2 = __v2f(verts[(i+1)%count]);
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ccVertex2F n1 = v2fnormalize(v2fperp(v2fsub(v1, v0)));
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ccVertex2F n2 = v2fnormalize(v2fperp(v2fsub(v2, v1)));
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ccVertex2F offset = v2fmult(v2fadd(n1, n2), 1.0/(v2fdot(n1, n2) + 1.0));
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struct ExtrudeVerts tmp = {offset, n2};
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extrude[i] = tmp;
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}
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bool outline = (borderColor.a > 0.0 && borderWidth > 0.0);
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unsigned int triangle_count = 3*count - 2;
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unsigned int vertex_count = 3*triangle_count;
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ensureCapacity(vertex_count);
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ccV2F_C4B_T2F_Triangle *triangles = (ccV2F_C4B_T2F_Triangle *)(m_pBuffer + m_nBufferCount);
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ccV2F_C4B_T2F_Triangle *cursor = triangles;
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float inset = (outline == 0.0 ? 0.5 : 0.0);
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for(unsigned int i = 0; i < count-2; i++)
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{
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ccVertex2F v0 = v2fsub(__v2f(verts[0 ]), v2fmult(extrude[0 ].offset, inset));
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ccVertex2F v1 = v2fsub(__v2f(verts[i+1]), v2fmult(extrude[i+1].offset, inset));
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ccVertex2F v2 = v2fsub(__v2f(verts[i+2]), v2fmult(extrude[i+2].offset, inset));
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ccV2F_C4B_T2F_Triangle tmp = {
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{v0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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{v1, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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{v2, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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};
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*cursor++ = tmp;
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}
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for(unsigned int i = 0; i < count; i++)
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{
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int j = (i+1)%count;
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ccVertex2F v0 = __v2f(verts[i]);
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ccVertex2F v1 = __v2f(verts[j]);
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ccVertex2F n0 = extrude[i].n;
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ccVertex2F offset0 = extrude[i].offset;
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ccVertex2F offset1 = extrude[j].offset;
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if(outline)
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{
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ccVertex2F inner0 = v2fsub(v0, v2fmult(offset0, borderWidth));
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ccVertex2F inner1 = v2fsub(v1, v2fmult(offset1, borderWidth));
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ccVertex2F outer0 = v2fadd(v0, v2fmult(offset0, borderWidth));
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ccVertex2F outer1 = v2fadd(v1, v2fmult(offset1, borderWidth));
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ccV2F_C4B_T2F_Triangle tmp1 = {
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{inner0, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
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{inner1, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
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{outer1, ccc4BFromccc4F(borderColor), __t(n0)}
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};
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*cursor++ = tmp1;
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ccV2F_C4B_T2F_Triangle tmp2 = {
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{inner0, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
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{outer0, ccc4BFromccc4F(borderColor), __t(n0)},
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{outer1, ccc4BFromccc4F(borderColor), __t(n0)}
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};
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*cursor++ = tmp2;
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}
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else {
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ccVertex2F inner0 = v2fsub(v0, v2fmult(offset0, 0.5));
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ccVertex2F inner1 = v2fsub(v1, v2fmult(offset1, 0.5));
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ccVertex2F outer0 = v2fadd(v0, v2fmult(offset0, 0.5));
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ccVertex2F outer1 = v2fadd(v1, v2fmult(offset1, 0.5));
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ccV2F_C4B_T2F_Triangle tmp1 = {
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{inner0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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{inner1, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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{outer1, ccc4BFromccc4F(fillColor), __t(n0)}
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};
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*cursor++ = tmp1;
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ccV2F_C4B_T2F_Triangle tmp2 = {
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{inner0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
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{outer0, ccc4BFromccc4F(fillColor), __t(n0)},
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{outer1, ccc4BFromccc4F(fillColor), __t(n0)}
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};
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*cursor++ = tmp2;
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}
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}
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m_nBufferCount += vertex_count;
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m_bDirty = true;
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free(extrude);
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}
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void CCDrawNode::clear()
|
|
{
|
|
m_nBufferCount = 0;
|
|
m_bDirty = true;
|
|
}
|
|
|
|
ccBlendFunc CCDrawNode::getBlendFunc() const
|
|
{
|
|
return m_sBlendFunc;
|
|
}
|
|
|
|
void CCDrawNode::setBlendFunc(const ccBlendFunc &blendFunc)
|
|
{
|
|
m_sBlendFunc = blendFunc;
|
|
}
|
|
|
|
NS_CC_END
|