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Unified Diff: cc/output/bsp_tree.cc

Issue 1533773002: Delete CC. (Closed) Base URL: git@github.com:domokit/mojo.git@cl-2e
Patch Set: rebase Created 5 years ago
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Index: cc/output/bsp_tree.cc
diff --git a/cc/output/bsp_tree.cc b/cc/output/bsp_tree.cc
deleted file mode 100644
index 4eb87cb95d28fa65f003302a7535887da7747be9..0000000000000000000000000000000000000000
--- a/cc/output/bsp_tree.cc
+++ /dev/null
@@ -1,119 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// 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>
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/base/scoped_ptr_deque.h"
-#include "cc/base/scoped_ptr_vector.h"
-#include "cc/output/bsp_compare_result.h"
-#include "cc/quads/draw_polygon.h"
-
-namespace cc {
-
-BspNode::BspNode(scoped_ptr<DrawPolygon> data) : node_data(data.Pass()) {
-}
-
-BspNode::~BspNode() {
-}
-
-BspTree::BspTree(ScopedPtrDeque<DrawPolygon>* list) {
- if (list->size() == 0)
- return;
-
- root_ = make_scoped_ptr(new BspNode(list->take_front()));
- BuildTree(root_.get(), list);
-}
-
-// The idea behind using a deque for BuildTree's input is that we want to be
-// able to place polygons that we've decided aren't splitting plane candidates
-// at the back of the queue while moving the candidate splitting planes to the
-// front when the heuristic decides that they're a better choice. This way we
-// can always simply just take from the front of the deque for our node's
-// data.
-void BspTree::BuildTree(BspNode* node,
- ScopedPtrDeque<DrawPolygon>* polygon_list) {
- ScopedPtrDeque<DrawPolygon> front_list;
- ScopedPtrDeque<DrawPolygon> back_list;
-
- // We take in a list of polygons at this level of the tree, and have to
- // find a splitting plane, then classify polygons as either in front of
- // or behind that splitting plane.
- while (polygon_list->size() > 0) {
- // Is this particular polygon in front of or behind our splitting polygon.
- BspCompareResult comparer_result =
- GetNodePositionRelative(*polygon_list->front(), *(node->node_data));
-
- // If it's clearly behind or in front of the splitting plane, we use the
- // heuristic to decide whether or not we should put it at the back
- // or front of the list.
- switch (comparer_result) {
- case BSP_FRONT:
- front_list.push_back(polygon_list->take_front().Pass());
- break;
- case BSP_BACK:
- back_list.push_back(polygon_list->take_front().Pass());
- break;
- case BSP_SPLIT:
- {
- scoped_ptr<DrawPolygon> polygon;
- scoped_ptr<DrawPolygon> new_front;
- scoped_ptr<DrawPolygon> new_back;
- // Time to split this geometry, *it needs to be split by node_data.
- polygon = polygon_list->take_front();
- bool split_result =
- polygon->Split(*(node->node_data), &new_front, &new_back);
- DCHECK(split_result);
- if (!split_result) {
- break;
- }
- front_list.push_back(new_front.Pass());
- back_list.push_back(new_back.Pass());
- break;
- }
- case BSP_COPLANAR_FRONT:
- node->coplanars_front.push_back(polygon_list->take_front());
- break;
- case BSP_COPLANAR_BACK:
- node->coplanars_back.push_back(polygon_list->take_front());
- break;
- default:
- NOTREACHED();
- break;
- }
- }
-
- // Build the back subtree using the front of the back_list as our splitter.
- if (back_list.size() > 0) {
- node->back_child = make_scoped_ptr(new BspNode(back_list.take_front()));
- BuildTree(node->back_child.get(), &back_list);
- }
-
- // Build the front subtree using the front of the front_list as our splitter.
- if (front_list.size() > 0) {
- node->front_child =
- scoped_ptr<BspNode>(new BspNode(front_list.take_front()));
- BuildTree(node->front_child.get(), &front_list);
- }
-}
-
-BspCompareResult BspTree::GetNodePositionRelative(const DrawPolygon& node_a,
- const DrawPolygon& node_b) {
- return DrawPolygon::SideCompare(node_a, node_b);
-}
-
-// The base comparer with 0,0,0 as camera position facing forward
-BspCompareResult BspTree::GetCameraPositionRelative(const DrawPolygon& node) {
- if (node.normal().z() > 0.0f) {
- return BSP_FRONT;
- }
- return BSP_BACK;
-}
-
-BspTree::~BspTree() {
-}
-
-} // namespace cc
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