mirror of
https://github.com/photonstorm/phaser
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102 lines
3.2 KiB
JavaScript
102 lines
3.2 KiB
JavaScript
/**
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* @author Richard Davey <rich@photonstorm.com>
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* @author Felipe Alfonso <@bitnenfer>
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* @copyright 2020 Photon Storm Ltd.
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* @license {@link https://opensource.org/licenses/MIT|MIT License}
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*/
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/**
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* Renders this Game Object with the Canvas Renderer to the given Camera.
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* The object will not render if any of its renderFlags are set or it is being actively filtered out by the Camera.
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* This method should not be called directly. It is a utility function of the Render module.
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*
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* @method Phaser.GameObjects.Container#renderCanvas
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* @since 3.4.0
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* @private
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*
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* @param {Phaser.Renderer.Canvas.CanvasRenderer} renderer - A reference to the current active Canvas renderer.
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* @param {Phaser.GameObjects.Container} container - The Game Object being rendered in this call.
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* @param {Phaser.Cameras.Scene2D.Camera} camera - The Camera that is rendering the Game Object.
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* @param {Phaser.GameObjects.Components.TransformMatrix} parentMatrix - This transform matrix is defined if the game object is nested
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*/
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var ContainerCanvasRenderer = function (renderer, container, camera, parentMatrix)
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{
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camera.addToRenderList(container);
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var children = container.list;
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if (children.length === 0)
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{
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return;
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}
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var transformMatrix = container.localTransform;
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if (parentMatrix)
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{
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transformMatrix.loadIdentity();
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transformMatrix.multiply(parentMatrix);
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transformMatrix.translate(container.x, container.y);
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transformMatrix.rotate(container.rotation);
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transformMatrix.scale(container.scaleX, container.scaleY);
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}
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else
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{
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transformMatrix.applyITRS(container.x, container.y, container.rotation, container.scaleX, container.scaleY);
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}
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var containerHasBlendMode = (container.blendMode !== -1);
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if (!containerHasBlendMode)
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{
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// If Container is SKIP_TEST then set blend mode to be Normal
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renderer.setBlendMode(0);
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}
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var alpha = container._alpha;
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var scrollFactorX = container.scrollFactorX;
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var scrollFactorY = container.scrollFactorY;
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if (container.mask)
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{
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container.mask.preRenderCanvas(renderer, null, camera);
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}
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for (var i = 0; i < children.length; i++)
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{
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var child = children[i];
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if (!child.willRender(camera))
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{
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continue;
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}
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var childAlpha = child.alpha;
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var childScrollFactorX = child.scrollFactorX;
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var childScrollFactorY = child.scrollFactorY;
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if (!containerHasBlendMode && child.blendMode !== renderer.currentBlendMode)
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{
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// If Container doesn't have its own blend mode, then a child can have one
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renderer.setBlendMode(child.blendMode);
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}
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// Set parent values
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child.setScrollFactor(childScrollFactorX * scrollFactorX, childScrollFactorY * scrollFactorY);
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child.setAlpha(childAlpha * alpha);
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// Render
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child.renderCanvas(renderer, child, camera, transformMatrix);
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// Restore original values
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child.setAlpha(childAlpha);
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child.setScrollFactor(childScrollFactorX, childScrollFactorY);
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}
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if (container.mask)
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{
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container.mask.postRenderCanvas(renderer);
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}
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};
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module.exports = ContainerCanvasRenderer;
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