3d scene, continue

src/dlangui/graphics/scene/camera.d

@@ -2,6 +2,32 @@ module dlangui.graphics.scene.camera;
 
 import dlangui.graphics.scene.node;
 
+import gl3n.linalg;
+import gl3n.math;
+
 /// Camera
 class Camera : Node3d {
+
+    protected mat4 _projectionMatrix;
+
+    /// get projection matrix
+    @property ref mat4 projectionMatrix() {
+        return _projectionMatrix;
+    }
+
+    /// set custom projection matrix
+    @property void projectionMatrix(mat4 v) {
+        _projectionMatrix = v;
+    }
+
+    /// set orthographic projection
+    void setOrtho(float left, float right, float bottom, float top, float near, float far) {
+        _projectionMatrix = mat4.orthographic(left, right, bottom, top, near, far);
+    }
+
+    /// set perspective projection
+    void setPerspective(float width, float height, float fov, float near, float far) {
+        _projectionMatrix = mat4.perspective(width, height, fov, near, far);
+    }
+
 }

src/dlangui/graphics/scene/node.d

@@ -4,6 +4,7 @@ import gl3n.linalg;
 import gl3n.math;
 
 import dlangui.graphics.scene.transform;
+import dlangui.core.collections;
 
 /// 3D scene node
 class Node3d : Transform {
@@ -12,6 +13,25 @@ class Node3d : Transform {
 
     protected mat4 _worldMatrix;
 
+    protected ObjectList!Node3d _children;
+
+    /// returns child node count
+    @property int childCount() {
+        return _children.count;
+    }
+    /// returns child node by index
+    Node3d child(int index) {
+        return _children[index];
+    }
+    /// add child node
+    void addChild(Node3d node) {
+        _children.add(node);
+        node.parent = this;
+    }
+    /// removes and destroys child node by index
+    void removeChild(int index) {
+        destroy(_children.remove(index));
+    }
 
     /// parent node
     @property Node3d parent() {

src/dlangui/graphics/scene/scene3d.d

@@ -12,5 +12,6 @@ class Scene3d : Node3d {
     @property vec3 ambientColor() { return _ambientColor; }
     @property void ambientColor(const ref vec3 v) { _ambientColor = v; }
 
+
 }