mirror of https://github.com/axmolengine/axmol.git
448 lines
14 KiB
C++
448 lines
14 KiB
C++
/****************************************************************************
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Copyright (c) 2008-2010 Ricardo Quesada
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Copyright (c) 2010-2013 cocos2d-x.org
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Copyright (c) 2011 Zynga Inc.
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Copyright (c) 2013-2017 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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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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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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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
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THE SOFTWARE.
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****************************************************************************/
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/*
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*
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* IMPORTANT IMPORTANT IMPORTANT IMPORTANT
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*
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*
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* LEGACY FUNCTIONS
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*
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* USE DrawNode instead
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*
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*/
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#include "2d/CCDrawingPrimitives.h"
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#include <string.h>
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#include <cmath>
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#include "2d/CCActionCatmullRom.h"
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#include "base/CCDirector.h"
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#include "renderer/ccGLStateCache.h"
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#include "renderer/CCGLProgramCache.h"
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#include "renderer/CCRenderer.h"
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#include "platform/CCGL.h"
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NS_CC_BEGIN
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#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#elif _MSC_VER >= 1400 //vs 2005 or higher
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#pragma warning (push)
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#pragma warning (disable: 4996)
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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namespace DrawPrimitives {
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static bool s_initialized = false;
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static GLProgram* s_shader = nullptr;
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static int s_colorLocation = -1;
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static Color4F s_color(1.0f,1.0f,1.0f,1.0f);
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static int s_pointSizeLocation = -1;
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static GLfloat s_pointSize = 1.0f;
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static void lazy_init()
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{
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if( ! s_initialized ) {
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//
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// Position and 1 color passed as a uniform (to simulate glColor4ub )
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//
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s_shader = GLProgramCache::getInstance()->getGLProgram(GLProgram::SHADER_NAME_POSITION_U_COLOR);
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s_shader->retain();
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s_colorLocation = s_shader->getUniformLocation("u_color");
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CHECK_GL_ERROR_DEBUG();
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s_pointSizeLocation = s_shader->getUniformLocation("u_pointSize");
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CHECK_GL_ERROR_DEBUG();
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s_initialized = true;
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}
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}
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// When switching from background to foreground on android, we want the parameters to be initialized again
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void init()
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{
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lazy_init();
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}
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void free()
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{
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CC_SAFE_RELEASE_NULL(s_shader);
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s_initialized = false;
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}
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void drawPoint(const Vec2& point)
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{
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lazy_init();
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Vec2 p;
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p.x = point.x;
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p.y = point.y;
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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s_shader->setUniformLocationWith1f(s_pointSizeLocation, s_pointSize);
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, &p);
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glDrawArrays(GL_POINTS, 0, 1);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,1);
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}
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void drawPoints( const Vec2 *points, unsigned int numberOfPoints )
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{
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lazy_init();
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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s_shader->setUniformLocationWith1f(s_pointSizeLocation, s_pointSize);
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, points);
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glDrawArrays(GL_POINTS, 0, (GLsizei) numberOfPoints);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, numberOfPoints);
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}
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void drawLine(const Vec2& origin, const Vec2& destination)
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{
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lazy_init();
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Vec2 vertices[2] = {
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Vec2(origin.x, origin.y),
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Vec2(destination.x, destination.y)
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};
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_LINES, 0, 2);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,2);
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}
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void drawRect( Vec2 origin, Vec2 destination )
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{
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drawLine(Vec2(origin.x, origin.y), Vec2(destination.x, origin.y));
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drawLine(Vec2(destination.x, origin.y), Vec2(destination.x, destination.y));
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drawLine(Vec2(destination.x, destination.y), Vec2(origin.x, destination.y));
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drawLine(Vec2(origin.x, destination.y), Vec2(origin.x, origin.y));
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}
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void drawSolidRect(Vec2 origin, Vec2 destination, Color4F color)
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{
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Vec2 vertices[] = {
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origin,
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Vec2(destination.x, origin.y),
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destination,
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Vec2(origin.x, destination.y)
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};
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drawSolidPoly(vertices, 4, color );
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}
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void drawPoly(const Vec2 *poli, unsigned int numberOfPoints, bool closePolygon)
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{
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lazy_init();
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, poli);
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if( closePolygon )
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glDrawArrays(GL_LINE_LOOP, 0, (GLsizei) numberOfPoints);
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else
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glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) numberOfPoints);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, numberOfPoints);
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}
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void drawSolidPoly(const Vec2 *poli, unsigned int numberOfPoints, Color4F color)
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{
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lazy_init();
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, poli);
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glDrawArrays(GL_TRIANGLE_FAN, 0, (GLsizei) numberOfPoints);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, numberOfPoints);
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}
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void drawCircle( const Vec2& center, float radius, float angle, unsigned int segments, bool drawLineToCenter, float scaleX, float scaleY)
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{
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lazy_init();
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int additionalSegment = 1;
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if (drawLineToCenter)
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additionalSegment++;
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const float coef = 2.0f * (float)M_PI/segments;
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GLfloat *vertices = (GLfloat*)calloc( 2*(segments+2), sizeof(GLfloat));
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if( ! vertices )
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return;
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for(unsigned int i = 0;i <= segments; i++) {
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float rads = i*coef;
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GLfloat j = radius * cosf(rads + angle) * scaleX + center.x;
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GLfloat k = radius * sinf(rads + angle) * scaleY + center.y;
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vertices[i*2] = j;
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vertices[i*2+1] = k;
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}
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vertices[(segments+1)*2] = center.x;
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vertices[(segments+1)*2+1] = center.y;
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments+additionalSegment);
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::free( vertices );
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,segments+additionalSegment);
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}
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void drawCircle( const Vec2& center, float radius, float angle, unsigned int segments, bool drawLineToCenter)
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{
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drawCircle(center, radius, angle, segments, drawLineToCenter, 1.0f, 1.0f);
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}
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void drawSolidCircle( const Vec2& center, float radius, float angle, unsigned int segments, float scaleX, float scaleY)
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{
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lazy_init();
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const float coef = 2.0f * (float)M_PI/segments;
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GLfloat *vertices = (GLfloat*)calloc( 2*(segments+2), sizeof(GLfloat));
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if( ! vertices )
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return;
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for(unsigned int i = 0;i <= segments; i++) {
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float rads = i*coef;
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GLfloat j = radius * cosf(rads + angle) * scaleX + center.x;
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GLfloat k = radius * sinf(rads + angle) * scaleY + center.y;
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vertices[i*2] = j;
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vertices[i*2+1] = k;
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}
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vertices[(segments+1)*2] = center.x;
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vertices[(segments+1)*2+1] = center.y;
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_TRIANGLE_FAN, 0, (GLsizei) segments+1);
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::free( vertices );
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,segments+1);
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}
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void drawSolidCircle( const Vec2& center, float radius, float angle, unsigned int segments)
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{
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drawSolidCircle(center, radius, angle, segments, 1.0f, 1.0f);
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}
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void drawQuadBezier(const Vec2& origin, const Vec2& control, const Vec2& destination, unsigned int segments)
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{
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lazy_init();
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Vec2* vertices = new (std::nothrow) Vec2[segments + 1];
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float t = 0.0f;
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for(unsigned int i = 0; i < segments; i++)
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{
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vertices[i].x = powf(1 - t, 2) * origin.x + 2.0f * (1 - t) * t * control.x + t * t * destination.x;
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vertices[i].y = powf(1 - t, 2) * origin.y + 2.0f * (1 - t) * t * control.y + t * t * destination.y;
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t += 1.0f / segments;
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}
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vertices[segments].x = destination.x;
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vertices[segments].y = destination.y;
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments + 1);
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CC_SAFE_DELETE_ARRAY(vertices);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,segments+1);
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}
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void drawCatmullRom( PointArray *points, unsigned int segments )
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{
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drawCardinalSpline( points, 0.5f, segments );
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}
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void drawCardinalSpline( PointArray *config, float tension, unsigned int segments )
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{
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lazy_init();
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Vec2* vertices = new (std::nothrow) Vec2[segments + 1];
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ssize_t p;
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float lt;
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float deltaT = 1.0f / config->count();
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for( unsigned int i=0; i < segments+1;i++) {
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float dt = (float)i / segments;
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// border
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if( dt == 1 ) {
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p = config->count() - 1;
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lt = 1;
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} else {
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p = dt / deltaT;
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lt = (dt - deltaT * (float)p) / deltaT;
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}
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// Interpolate
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Vec2 pp0 = config->getControlPointAtIndex(p-1);
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Vec2 pp1 = config->getControlPointAtIndex(p+0);
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Vec2 pp2 = config->getControlPointAtIndex(p+1);
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Vec2 pp3 = config->getControlPointAtIndex(p+2);
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Vec2 newPos = ccCardinalSplineAt( pp0, pp1, pp2, pp3, tension, lt);
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vertices[i].x = newPos.x;
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vertices[i].y = newPos.y;
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}
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*)&s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments + 1);
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CC_SAFE_DELETE_ARRAY(vertices);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,segments+1);
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}
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void drawCubicBezier(const Vec2& origin, const Vec2& control1, const Vec2& control2, const Vec2& destination, unsigned int segments)
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{
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lazy_init();
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Vec2* vertices = new (std::nothrow) Vec2[segments + 1];
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float t = 0;
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for (unsigned int i = 0; i < segments; i++)
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{
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vertices[i].x = powf(1 - t, 3) * origin.x + 3.0f * powf(1 - t, 2) * t * control1.x + 3.0f * (1 - t) * t * t * control2.x + t * t * t * destination.x;
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vertices[i].y = powf(1 - t, 3) * origin.y + 3.0f * powf(1 - t, 2) * t * control1.y + 3.0f * (1 - t) * t * t * control2.y + t * t * t * destination.y;
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t += 1.0f / segments;
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}
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vertices[segments].x = destination.x;
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vertices[segments].y = destination.y;
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s_shader->use();
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s_shader->setUniformsForBuiltins();
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s_shader->setUniformLocationWith4fv(s_colorLocation, (GLfloat*) &s_color.r, 1);
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GL::enableVertexAttribs( GL::VERTEX_ATTRIB_FLAG_POSITION );
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glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
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glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments + 1);
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CC_SAFE_DELETE_ARRAY(vertices);
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CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1,segments+1);
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}
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void setDrawColor4F( GLfloat r, GLfloat g, GLfloat b, GLfloat a )
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{
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s_color.r = r;
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s_color.g = g;
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s_color.b = b;
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s_color.a = a;
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}
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void setPointSize( GLfloat pointSize )
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{
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s_pointSize = pointSize * CC_CONTENT_SCALE_FACTOR();
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// TODO: glPointSize( pointSize );
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}
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void setDrawColor4B( GLubyte r, GLubyte g, GLubyte b, GLubyte a )
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{
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s_color.r = r/255.0f;
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s_color.g = g/255.0f;
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s_color.b = b/255.0f;
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s_color.a = a/255.0f;
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}
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} // DrawPrimitives namespace
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#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
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#pragma GCC diagnostic warning "-Wdeprecated-declarations"
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#elif _MSC_VER >= 1400 //vs 2005 or higher
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#pragma warning (pop)
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#endif
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NS_CC_END
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