src/scene.c

Sun, 21 Jan 2024 13:31:51 +0100

author
Mike Becker <universe@uap-core.de>
date
Sun, 21 Jan 2024 13:31:51 +0100
changeset 25
601b3f4e17a2
parent 21
1a47c57666f5
child 27
4ccf4703999e
permissions
-rw-r--r--

rename AscTextNode to just AscText

universe@21 1 /*
universe@21 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@21 3 * Copyright 2023 Mike Becker. All rights reserved.
universe@21 4 *
universe@21 5 * Redistribution and use in source and binary forms, with or without
universe@21 6 * modification, are permitted provided that the following conditions are met:
universe@21 7 *
universe@21 8 * 1. Redistributions of source code must retain the above copyright
universe@21 9 * notice, this list of conditions and the following disclaimer.
universe@21 10 *
universe@21 11 * 2. Redistributions in binary form must reproduce the above copyright
universe@21 12 * notice, this list of conditions and the following disclaimer in the
universe@21 13 * documentation and/or other materials provided with the distribution.
universe@21 14 *
universe@21 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@21 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@21 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@21 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@21 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@21 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@21 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@21 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@21 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@21 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@21 25 * POSSIBILITY OF SUCH DAMAGE.
universe@21 26 */
universe@21 27
universe@21 28 #include "ascension/scene.h"
universe@21 29 #include "ascension/error.h"
universe@21 30
universe@21 31 #include <cx/linked_list.h>
universe@21 32 #include <assert.h>
universe@21 33
universe@21 34 void asc_scene_init(AscScene *scene) {
universe@21 35 if (scene->root != NULL) {
universe@21 36 asc_error("Scene is already initialized.");
universe@21 37 return;
universe@21 38 }
universe@21 39 scene->root = asc_scene_node_create(NULL);
universe@21 40 }
universe@21 41
universe@21 42 void asc_scene_destroy(AscScene *scene) {
universe@21 43 asc_scene_node_free(scene->root);
universe@21 44 }
universe@21 45
universe@21 46 AscSceneNode *asc_scene_node_create(AscSceneNode *parent) {
universe@21 47 AscSceneNode *node = malloc(sizeof(AscSceneNode));
universe@21 48 assert(node != NULL);
universe@21 49 node->children = cxLinkedListCreateSimple(CX_STORE_POINTERS);
universe@21 50 assert(node->children != NULL);
universe@21 51 node->parent = NULL;
universe@21 52 asc_scene_node_link(node, parent);
universe@21 53 return node;
universe@21 54 }
universe@21 55
universe@21 56 void asc_scene_node_free(AscSceneNode *node) {
universe@21 57 if (node == NULL) return;
universe@21 58 while (cxListSize(node->children) > 0) {
universe@21 59 AscSceneNode *child = cxListAt(node->children, 0);
universe@21 60 asc_scene_node_free(child);
universe@21 61 }
universe@21 62 if (node->parent != NULL) {
universe@21 63 cxListFindRemove(node->parent->children, node);
universe@21 64 }
universe@21 65 free(node);
universe@21 66 }
universe@21 67
universe@21 68 void asc_scene_node_link(
universe@21 69 AscSceneNode *node,
universe@21 70 AscSceneNode *parent
universe@21 71 ) {
universe@21 72 if (node->parent == parent) return;
universe@21 73 if (node->parent != NULL || parent == NULL) asc_scene_node_unlink(node);
universe@21 74 if (parent != NULL) {
universe@21 75 cxListAdd(parent->children, node);
universe@21 76 node->parent = parent;
universe@21 77 }
universe@21 78 }
universe@21 79
universe@21 80 void asc_scene_node_unlink(AscSceneNode *node) {
universe@21 81 if (node->parent == NULL) return;
universe@21 82 cxListFindRemove(node->parent->children, node);
universe@21 83 node->parent = NULL;
universe@21 84 }

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