学步园

想在CEGUI中做点小特效，发现平移过来的CEGUI DEMO7点击事件都正常，特效死活出不来。检查原因在于CEGUI::RenderEffect需要每帧调用一次，只要在OGRE的帧监听中加入：

CEGUI::System::getSingleton().injectTimePulse(evt.timeSinceLastFrame);

附上Demo7特效的个人简化备注：

class MyEffect : public CEGUI::RenderEffect<br /> {<br /> public:<br /> MyEffect() :<br /> initialised(false),<br /> dragX(0), dragY(0),<br /> elasX(0), elasY(0)<br /> {</p> <p> }</p> <p> // CEGUI::RenderEffect接口<br /> int getPassCount() const{ return 1;} // 渲染通道个数？谁能告诉我这个是啥？<br /> void performPreRenderFunctions(const int pass){} // 渲染前调用<br /> void performPostRenderFunctions(){} // 渲染后调用 </p> <p> // GUI渲染过程：<br /> // 1 计算RenderWindow信息<br /> // 2 写入GeometryBuffer图像信息（Vecotr[6]的两个三角形，以及纹理什么的）<br /> // 3 GeometryBuffer Draw<br /> // 这一步实际就是在1，2之间时的调用<br /> bool realiseGeometry(CEGUI::RenderingWindow& window, CEGUI::GeometryBuffer& geometry)<br /> {<br /> using namespace CEGUI;<br /> Texture& tex = window.getTextureTarget().getTexture();</p> <p> static const CEGUI::colour c(1, 1, 1, 1);</p> <p> // 将一张纹理分解成8 * 8个正方形<br /> // 每个方块长/高<br /> const float qw = window.getSize().d_width / tess_x;<br /> const float qh = window.getSize().d_height / tess_y;<br /> // 每个长/高所包含的纹理长/高（长/高 * 1个像素所对应的纹理长/高）<br /> const float tcx = qw * tex.getTexelScaling().d_x;<br /> const float tcy = (window.getTextureTarget().isRenderingInverted() ? -qh : qh) * tex.getTexelScaling().d_y;</p> <p> for (int j = 0; j < tess_y; ++j)<br /> {<br /> for (int i = 0; i < tess_x; ++i)<br /> {<br /> // 每次循环生成六个点（两个三角形）<br /> int idx = (j * tess_x + i) * 6;</p> <p> float top_adj = dragX * ((1.0f / tess_x) * j);<br /> float bot_adj = dragX * ((1.0f / tess_x) * (j+1));<br /> top_adj = ((top_adj*top_adj) / 3) * (dragX < 0 ? -1 : 1);<br /> bot_adj = ((bot_adj*bot_adj) / 3) * (dragX < 0 ? -1 : 1);</p> <p> float lef_adj = dragY * ((1.0f / tess_y) * i);<br /> float rig_adj = dragY * ((1.0f / tess_y) * (i+1));<br /> lef_adj = ((lef_adj*lef_adj) / 3) * (dragY < 0 ? -1 : 1);<br /> rig_adj = ((rig_adj*rig_adj) / 3) * (dragY < 0 ? -1 : 1);</p> <p> // vertex 0<br /> vb[idx + 0].position = Vector3(i * qw - top_adj, j * qh - lef_adj, 0.0f);<br /> vb[idx + 0].colour_val = c;<br /> vb[idx + 0].tex_coords = Vector2(i * tcx, j*tcy);</p> <p> // vertex 1<br /> vb[idx + 1].position = Vector3(i * qw - bot_adj, j * qh + qh - lef_adj, 0.0f);<br /> vb[idx + 1].colour_val = c;<br /> vb[idx + 1].tex_coords = Vector2(i*tcx, j*tcy+tcy);</p> <p> // vertex 2<br /> vb[idx + 2].position = Vector3(i * qw + qw - bot_adj, j * qh + qh - rig_adj, 0.0f);<br /> vb[idx + 2].colour_val = c;<br /> vb[idx + 2].tex_coords = Vector2(i*tcx+tcx, j*tcy+tcy);</p> <p> // vertex 3<br /> vb[idx + 3].position = Vector3(i * qw + qw - bot_adj, j * qh + qh - rig_adj, 0.0f);<br /> vb[idx + 3].colour_val = c;<br /> vb[idx + 3].tex_coords = Vector2(i*tcx+tcx, j*tcy+tcy);</p> <p> // vertex 4<br /> vb[idx + 4].position = Vector3(i * qw + qw - top_adj, j * qh - rig_adj, 0.0f);<br /> vb[idx + 4].colour_val = c;<br /> vb[idx + 4].tex_coords = Vector2(i*tcx+tcx, j*tcy);</p> <p> // vertex 5<br /> vb[idx + 5].position = Vector3(i * qw - top_adj, j * qh - lef_adj, 0.0f);<br /> vb[idx + 5].colour_val = c;<br /> vb[idx + 5].tex_coords = Vector2(i * tcx, j*tcy);<br /> }<br /> }</p> <p> geometry.setActiveTexture(&tex);<br /> geometry.appendGeometry(vb, buffsize);</p> <p> // true：交由CEGUI生成GeometryBuffer<br /> // false：自己生成GeometryBuffer<br /> return false;<br /> }</p> <p> // 每帧调用<br /> bool update(const float elapsed, CEGUI::RenderingWindow& window)<br /> {<br /> using namespace CEGUI;</p> <p> // 第一次时记录原始位置<br /> if (!initialised)<br /> {<br /> initialised = true;<br /> lastX = window.getPosition().d_x;<br /> lastY = window.getPosition().d_y;<br /> return true;<br /> }</p> <p> const Vector2 pos(window.getPosition()); // 当前位置</p> <p> // 当前位置相当于原位置的偏移<br /> if (pos.d_x != lastX)<br /> {<br /> dragX += (pos.d_x - lastX) * 0.2;<br /> elasX = 0.05f;<br /> lastX = pos.d_x;</p> <p> if (dragX > 25)<br /> dragX = 25;<br /> else if (dragX < -25)<br /> dragX = -25;<br /> }</p> <p> if (pos.d_y != lastY)<br /> {<br /> dragY += (pos.d_y - lastY) * 0.2f;<br /> elasY = 0.05f;<br /> lastY = pos.d_y;</p> <p> if (dragY > 25)<br /> dragY = 25;<br /> else if (dragY < -25)<br /> dragY = -25;<br /> }</p> <p> // 运算偏移<br /> if ((dragX != 0) || (dragY != 0))<br /> {<br /> if (dragX < 0)<br /> {<br /> dragX += (elasX * 800 * elapsed);<br /> elasX += 0.075 * elapsed;<br /> if (dragX >0)<br /> dragX = 0;<br /> }<br /> else<br /> {<br /> dragX -= (elasX * 800 * elapsed);<br /> elasX += 0.075 * elapsed;<br /> if (dragX < 0)<br /> dragX = 0;<br /> }</p> <p> if (dragY < 0)<br /> {<br /> dragY += elasY * 800 * elapsed;<br /> elasY += 0.075 * elapsed;<br /> if (dragY >0)<br /> dragY = 0;<br /> }<br /> else<br /> {<br /> dragY -= elasY * 800 * elapsed;<br /> elasY += 0.075 * elapsed;<br /> if (dragY < 0)<br /> dragY = 0;<br /> }</p> <p> // 重绘，不重绘就白玩了，不过这样搞消耗会不会太大了<br /> System::getSingleton().signalRedraw();<br /> return false;<br /> }<br /> return true;<br /> }</p> <p>protected:<br /> static const float tess_x;<br /> static const float tess_y;<br /> static const int buffsize = (8 * 8 * 6);</p> <p> bool initialised;</p> <p> float lastX, lastY;<br /> float dragX, dragY;<br /> float elasX, elasY;</p> <p> CEGUI::Vertex vb[buffsize];<br /> };</p> <p>class Demo7Sample<br /> {<br /> public:<br /> static void setup()<br /> {<br /> using namespace CEGUI;<br /> CEGUI::Window* root = CEGUIManager::Instance().getWindowMain();</p> <p> // 注册效果<br /> RenderEffectManager::getSingleton().addEffect<MyEffect>("WobblyWindow");</p> <p> // 创建schemes.<br /> WindowFactoryManager::getSingleton().addFalagardWindowMapping(<br /> "TaharezLook/WobblyFrameWindow", // Type<br /> "CEGUI/FrameWindow", // 基于类型<br /> "TaharezLook/FrameWindow", // 外观<br /> "Falagard/FrameWindow", // 渲染<br /> "WobblyWindow"); // 效果</p> <p> WindowManager& winMgr = WindowManager::getSingleton();<br /> root->addChildWindow(winMgr.loadWindowLayout("Demo7Windows.layout"));<br /> }<br /> };<br />

bool HideEffect::realiseGeometry(CEGUI::RenderingWindow& window, CEGUI::GeometryBuffer& geometry)<br /> {<br /> // 注释的是return true做的事情<br /> //CEGUI::TextureTarget& d_textarget = window.getTextureTarget();<br /> //CEGUI::Texture& tex = d_textarget.getTexture();</p> <p> //static CEGUI::colour c(1, 1, 1, 1);</p> <p> //CEGUI::Size d_size = tex.getSize();<br /> //const float tu = d_size.d_width * tex.getTexelScaling().d_x;<br /> //const float tv = d_size.d_height * tex.getTexelScaling().d_y;<br /> //const CEGUI::Rect tex_rect(d_textarget.isRenderingInverted() ? CEGUI::Rect(0, 1, tu, 1 - tv) : CEGUI::Rect(0, 0, tu, tv));<br /> //const CEGUI::Rect area(0, 0, d_size.d_width, d_size.d_height);<br /> //<br /> //CEGUI::Vertex vbuffer[6];<br /> //// vertex 0<br /> //vbuffer[0].position = CEGUI::Vector3(area.d_left, area.d_top, 0.0f);<br /> //vbuffer[0].colour_val = c;<br /> //vbuffer[0].tex_coords = CEGUI::Vector2(tex_rect.d_left, tex_rect.d_top);</p> <p> //// vertex 1<br /> //vbuffer[1].position = CEGUI::Vector3(area.d_left, area.d_bottom, 0.0f);<br /> //vbuffer[1].colour_val = c;<br /> //vbuffer[1].tex_coords = CEGUI::Vector2(tex_rect.d_left, tex_rect.d_bottom);</p> <p> //// vertex 2<br /> //vbuffer[2].position = CEGUI::Vector3(area.d_right, area.d_bottom, 0.0f);<br /> //vbuffer[2].colour_val = c;<br /> //vbuffer[2].tex_coords = CEGUI::Vector2(tex_rect.d_right, tex_rect.d_bottom);</p> <p> //// vertex 3<br /> //vbuffer[3].position = CEGUI::Vector3(area.d_right, area.d_top, 0.0f);<br /> //vbuffer[3].colour_val = c;<br /> //vbuffer[3].tex_coords = CEGUI::Vector2(tex_rect.d_right, tex_rect.d_top);</p> <p> //// vertex 4<br /> //vbuffer[4].position = CEGUI::Vector3(area.d_left, area.d_top, 0.0f);<br /> //vbuffer[4].colour_val = c;<br /> //vbuffer[4].tex_coords = CEGUI::Vector2(tex_rect.d_left, tex_rect.d_top);</p> <p> //// vertex 5<br /> //vbuffer[5].position = CEGUI::Vector3(area.d_right, area.d_bottom, 0.0f);<br /> //vbuffer[5].colour_val = c;<br /> //vbuffer[5].tex_coords = CEGUI::Vector2(tex_rect.d_right, tex_rect.d_bottom);</p> <p> //geometry.setActiveTexture(&tex);<br /> //geometry.appendGeometry(vbuffer, 6);<br /> //return false;<br /> return true;<br /> }