Function ccDrawPoly

CrossApp/view/CADrawingPrimitives.cpp:199–247

}

void ccDrawPoly( const DPoint *poli, unsigned int numberOfPoints, bool closePolygon )
{
    lazy_init();

    s_pShader->use();
    s_pShader->setUniformsForBuiltins();
    s_pShader->setUniformLocationWith4fv(s_nColorLocation, (GLfloat*) &s_tColor.r, 1);

    ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position );

    // iPhone and 32-bit machines optimization
    if( sizeof(DPoint) == sizeof(ccVertex2F) )
    {
#ifdef EMSCRIPTEN
        setGLBufferData((void*) poli, numberOfPoints * sizeof(DPoint));
        glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, 0);
#else
        glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, poli);
#endif // EMSCRIPTEN

        if( closePolygon )
            glDrawArrays(GL_LINE_LOOP, 0, (GLsizei) numberOfPoints);
        else
            glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) numberOfPoints);
    }
    else
    {
        // Mac on 64-bit
        // XXX: Mac OpenGL error. arrays can't go out of scope before draw is executed
        ccVertex2F* newPoli = new ccVertex2F[numberOfPoints];
        for( unsigned int i=0; i<numberOfPoints;i++) {
            newPoli[i].x = poli[i].x;
            newPoli[i].y = poli[i].y;
        }
#ifdef EMSCRIPTEN
        setGLBufferData(newPoli, numberOfPoints * sizeof(ccVertex2F));
        glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, 0);
#else
        glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, newPoli);
#endif // EMSCRIPTEN

        if( closePolygon )
            glDrawArrays(GL_LINE_LOOP, 0, (GLsizei) numberOfPoints);
        else
            glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) numberOfPoints);

        CC_SAFE_DELETE_ARRAY(newPoli);
    }
}

void ccDrawSolidPoly( const DPoint *poli, unsigned int numberOfPoints, CAColor4F color )
{