| Index: cc/output/bsp_tree.cc
|
| diff --git a/cc/output/bsp_tree.cc b/cc/output/bsp_tree.cc
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| deleted file mode 100644
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| index 4eb87cb95d28fa65f003302a7535887da7747be9..0000000000000000000000000000000000000000
|
| --- a/cc/output/bsp_tree.cc
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| +++ /dev/null
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| @@ -1,119 +0,0 @@
|
| -// Copyright 2014 The Chromium Authors. All rights reserved.
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| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -#include "cc/output/bsp_tree.h"
|
| -
|
| -#include <vector>
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| -
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| -#include "base/memory/scoped_ptr.h"
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| -#include "cc/base/scoped_ptr_deque.h"
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| -#include "cc/base/scoped_ptr_vector.h"
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| -#include "cc/output/bsp_compare_result.h"
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| -#include "cc/quads/draw_polygon.h"
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| -
|
| -namespace cc {
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| -
|
| -BspNode::BspNode(scoped_ptr<DrawPolygon> data) : node_data(data.Pass()) {
|
| -}
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| -
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| -BspNode::~BspNode() {
|
| -}
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| -
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| -BspTree::BspTree(ScopedPtrDeque<DrawPolygon>* list) {
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| - if (list->size() == 0)
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| - return;
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| -
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| - root_ = make_scoped_ptr(new BspNode(list->take_front()));
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| - BuildTree(root_.get(), list);
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| -}
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| -
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| -// The idea behind using a deque for BuildTree's input is that we want to be
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| -// able to place polygons that we've decided aren't splitting plane candidates
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| -// at the back of the queue while moving the candidate splitting planes to the
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| -// front when the heuristic decides that they're a better choice. This way we
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| -// can always simply just take from the front of the deque for our node's
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| -// data.
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| -void BspTree::BuildTree(BspNode* node,
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| - ScopedPtrDeque<DrawPolygon>* polygon_list) {
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| - ScopedPtrDeque<DrawPolygon> front_list;
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| - ScopedPtrDeque<DrawPolygon> back_list;
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| -
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| - // We take in a list of polygons at this level of the tree, and have to
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| - // find a splitting plane, then classify polygons as either in front of
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| - // or behind that splitting plane.
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| - while (polygon_list->size() > 0) {
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| - // Is this particular polygon in front of or behind our splitting polygon.
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| - BspCompareResult comparer_result =
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| - GetNodePositionRelative(*polygon_list->front(), *(node->node_data));
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| -
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| - // If it's clearly behind or in front of the splitting plane, we use the
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| - // heuristic to decide whether or not we should put it at the back
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| - // or front of the list.
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| - switch (comparer_result) {
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| - case BSP_FRONT:
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| - front_list.push_back(polygon_list->take_front().Pass());
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| - break;
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| - case BSP_BACK:
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| - back_list.push_back(polygon_list->take_front().Pass());
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| - break;
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| - case BSP_SPLIT:
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| - {
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| - scoped_ptr<DrawPolygon> polygon;
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| - scoped_ptr<DrawPolygon> new_front;
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| - scoped_ptr<DrawPolygon> new_back;
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| - // Time to split this geometry, *it needs to be split by node_data.
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| - polygon = polygon_list->take_front();
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| - bool split_result =
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| - polygon->Split(*(node->node_data), &new_front, &new_back);
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| - DCHECK(split_result);
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| - if (!split_result) {
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| - break;
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| - }
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| - front_list.push_back(new_front.Pass());
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| - back_list.push_back(new_back.Pass());
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| - break;
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| - }
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| - case BSP_COPLANAR_FRONT:
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| - node->coplanars_front.push_back(polygon_list->take_front());
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| - break;
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| - case BSP_COPLANAR_BACK:
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| - node->coplanars_back.push_back(polygon_list->take_front());
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| - break;
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| - default:
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| - NOTREACHED();
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| - break;
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| - }
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| - }
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| -
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| - // Build the back subtree using the front of the back_list as our splitter.
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| - if (back_list.size() > 0) {
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| - node->back_child = make_scoped_ptr(new BspNode(back_list.take_front()));
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| - BuildTree(node->back_child.get(), &back_list);
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| - }
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| -
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| - // Build the front subtree using the front of the front_list as our splitter.
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| - if (front_list.size() > 0) {
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| - node->front_child =
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| - scoped_ptr<BspNode>(new BspNode(front_list.take_front()));
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| - BuildTree(node->front_child.get(), &front_list);
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| - }
|
| -}
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| -
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| -BspCompareResult BspTree::GetNodePositionRelative(const DrawPolygon& node_a,
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| - const DrawPolygon& node_b) {
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| - return DrawPolygon::SideCompare(node_a, node_b);
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| -}
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| -
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| -// The base comparer with 0,0,0 as camera position facing forward
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| -BspCompareResult BspTree::GetCameraPositionRelative(const DrawPolygon& node) {
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| - if (node.normal().z() > 0.0f) {
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| - return BSP_FRONT;
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| - }
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| - return BSP_BACK;
|
| -}
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| -
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| -BspTree::~BspTree() {
|
| -}
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| -
|
| -} // namespace cc
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|
|