mirror of https://github.com/axmolengine/axmol.git
fix billboard face
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parent
adda886210
commit
5a85cb405e
cocos/3d
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@ -93,36 +93,42 @@ BillBorad* BillBorad::create()
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void BillBorad::draw(Renderer *renderer, const Mat4 &transform, uint32_t flags)
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{
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auto camera = Camera::getVisitingCamera();
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const Mat4 &viewMat = camera->getViewMatrix();
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// const Mat4& camWorldMat = camera->getNodeToWorldTransform();
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// Vec3 camDir(transform.m[12] - camWorldMat.m[12], transform.m[13] - camWorldMat.m[13], transform.m[14] - camWorldMat.m[14]);
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// camDir.normalize();
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// static Vec3 upAxis(0.0f, 1.0f, 0.0f);
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// Vec3 x, y;
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// camWorldMat.transformVector(upAxis, &y);
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// Vec3::cross(camDir, y, &x);
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// x.normalize();
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// Vec3::cross(x, camDir, &y);
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// Mat4 newTransform;
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// newTransform.m[0] = x.x; newTransform.m[1] = x.y; newTransform.m[2] = x.z;
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// newTransform.m[4] = y.x; newTransform.m[5] = y.y; newTransform.m[6] = y.z;
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// newTransform.m[8] = -camDir.x; newTransform.m[9] = -camDir.y; newTransform.m[10] = -camDir.z;
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// newTransform.m[12] = transform.m[12]; newTransform.m[13] = transform.m[13]; newTransform.m[14] = transform.m[14];
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if (memcmp(_preViewMat.m, viewMat.m, sizeof(float) * 16) != 0)
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const Mat4& camWorldMat = camera->getNodeToWorldTransform();
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if (memcmp(_camWorldMat.m, camWorldMat.m, sizeof(float) * 16) != 0 || memcmp(_transform.m, transform.m, sizeof(float) * 16) != 0)
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{
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Mat4 viewInverseMat = camera->getInverseViewMatrix();
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viewInverseMat.m[12] = viewInverseMat.m[13] = viewInverseMat.m[14] = 0;
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Mat4 modelViewMat = viewMat * transform;
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_preViewMat = viewMat;
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_zDepthInView = -modelViewMat.m[14];
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_mv = viewInverseMat;
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Vec3 camDir(transform.m[12] - camWorldMat.m[12], transform.m[13] - camWorldMat.m[13], transform.m[14] - camWorldMat.m[14]);
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if (camDir.length() < MATH_TOLERANCE)
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{
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camDir.set(camWorldMat.m[8], camWorldMat.m[9], camWorldMat.m[10]);
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}
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camDir.normalize();
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static Vec3 upAxis(0.0f, 1.0f, 0.0f);
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Vec3 x, y;
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camWorldMat.transformVector(upAxis, &y);
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Vec3::cross(camDir, y, &x);
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x.normalize();
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Vec3::cross(x, camDir, &y);
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float xlen = sqrtf(transform.m[0] * transform.m[0] + transform.m[1] * transform.m[1] + transform.m[2] * transform.m[2]);
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float ylen = sqrtf(transform.m[4] * transform.m[4] + transform.m[5] * transform.m[5] + transform.m[6] * transform.m[6]);
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float zlen = sqrtf(transform.m[8] * transform.m[8] + transform.m[9] * transform.m[9] + transform.m[10] * transform.m[10]);
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_billboardTransform.m[0] = x.x * xlen; _billboardTransform.m[1] = x.y * xlen; _billboardTransform.m[2] = x.z * xlen;
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_billboardTransform.m[4] = y.x * ylen; _billboardTransform.m[5] = y.y * ylen; _billboardTransform.m[6] = y.z * ylen;
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_billboardTransform.m[8] = -camDir.x * zlen; _billboardTransform.m[9] = -camDir.y * zlen; _billboardTransform.m[10] = -camDir.z * zlen;
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_billboardTransform.m[12] = transform.m[12]; _billboardTransform.m[13] = transform.m[13]; _billboardTransform.m[14] = transform.m[14];
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const Mat4 &viewMat = camWorldMat.getInversed();
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_zDepthInView = -(viewMat.m[2] * transform.m[12] + viewMat.m[6] * transform.m[13] + viewMat.m[10] * transform.m[14] + viewMat.m[14]);
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_transform = transform;
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_camWorldMat = camWorldMat;
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}
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//FIXME: frustum culling here
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{
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_quadCommand.init(_zDepthInView, _texture->getName(), getGLProgramState(), _blendFunc, &_quad, 1, newTransform/*transform * _mv*/);
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_quadCommand.init(_zDepthInView, _texture->getName(), getGLProgramState(), _blendFunc, &_quad, 1, _billboardTransform);
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renderer->addTransparentCommand(&_quadCommand);
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}
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}
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@ -87,8 +87,10 @@ CC_CONSTRUCTOR_ACCESS:
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protected:
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Mat4 _preViewMat;
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Mat4 _mv;
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Mat4 _camWorldMat;
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Mat4 _transform;
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Mat4 _billboardTransform;
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float _zDepthInView;
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private:
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