import * as core from '../core';
import { default as TextureTransform } from '../extras/TextureTransform';
const tempPoint = new core.Point();
const tempPolygon = new core.Polygon();
/**
* Base mesh class
* @class
* @extends PIXI.Container
* @memberof PIXI.mesh
*/
export default class Mesh extends core.Container
{
/**
* @param {PIXI.Texture} texture - The texture to use
* @param {Float32Array} [vertices] - if you want to specify the vertices
* @param {Float32Array} [uvs] - if you want to specify the uvs
* @param {Uint16Array} [indices] - if you want to specify the indices
* @param {number} [drawMode] - the drawMode, can be any of the Mesh.DRAW_MODES consts
*/
constructor(texture, vertices, uvs, indices, drawMode)
{
super();
/**
* The texture of the Mesh
*
* @member {PIXI.Texture}
* @private
*/
this._texture = texture;
/**
* The Uvs of the Mesh
*
* @member {Float32Array}
*/
this.uvs = uvs || new Float32Array([
0, 0,
1, 0,
1, 1,
0, 1]);
/**
* An array of vertices
*
* @member {Float32Array}
*/
this.vertices = vertices || new Float32Array([
0, 0,
100, 0,
100, 100,
0, 100]);
/**
* An array containing the indices of the vertices
*
* @member {Uint16Array}
*/
// TODO auto generate this based on draw mode!
this.indices = indices || new Uint16Array([0, 1, 3, 2]);
/**
* Version of mesh uvs are dirty or not
*
* @member {number}
*/
this.dirty = 0;
/**
* Version of mesh indices
*
* @member {number}
*/
this.indexDirty = 0;
/**
* The blend mode to be applied to the sprite. Set to `PIXI.BLEND_MODES.NORMAL` to remove
* any blend mode.
*
* @member {number}
* @default PIXI.BLEND_MODES.NORMAL
* @see PIXI.BLEND_MODES
*/
this.blendMode = core.BLEND_MODES.NORMAL;
/**
* Triangles in canvas mode are automatically antialiased, use this value to force triangles
* to overlap a bit with each other.
*
* @member {number}
*/
this.canvasPadding = 0;
/**
* The way the Mesh should be drawn, can be any of the {@link PIXI.mesh.Mesh.DRAW_MODES} consts
*
* @member {number}
* @see PIXI.mesh.Mesh.DRAW_MODES
*/
this.drawMode = drawMode || Mesh.DRAW_MODES.TRIANGLE_MESH;
/**
* The default shader that is used if a mesh doesn't have a more specific one.
*
* @member {PIXI.Shader}
*/
this.shader = null;
/**
* The tint applied to the mesh. This is a [r,g,b] value. A value of [1,1,1] will remove any
* tint effect.
*
* @member {number}
*/
this.tintRgb = new Float32Array([1, 1, 1]);
/**
* A map of renderer IDs to webgl render data
*
* @private
* @member {object<number, object>}
*/
this._glDatas = {};
/**
* transform that is applied to UV to get the texture coords
* its updated independently from texture uvTransform
* updates of uvs are tied to that thing
*
* @member {PIXI.extras.TextureTransform}
* @private
*/
this._uvTransform = new TextureTransform(texture);
/**
* whether or not upload uvTransform to shader
* if its false, then uvs should be pre-multiplied
* if you change it for generated mesh, please call 'refresh(true)'
* @member {boolean}
* @default false
*/
this.uploadUvTransform = false;
/**
* Plugin that is responsible for rendering this element.
* Allows to customize the rendering process without overriding '_renderWebGL' & '_renderCanvas' methods.
* @member {string}
* @default 'mesh'
*/
this.pluginName = 'mesh';
}
/**
* Renders the object using the WebGL renderer
*
* @private
* @param {PIXI.WebGLRenderer} renderer - a reference to the WebGL renderer
*/
_renderWebGL(renderer)
{
this.refresh();
renderer.setObjectRenderer(renderer.plugins[this.pluginName]);
renderer.plugins[this.pluginName].render(this);
}
/**
* Renders the object using the Canvas renderer
*
* @private
* @param {PIXI.CanvasRenderer} renderer - The canvas renderer.
*/
_renderCanvas(renderer)
{
this.refresh();
renderer.plugins[this.pluginName].render(this);
}
/**
* When the texture is updated, this event will fire to update the scale and frame
*
* @private
*/
_onTextureUpdate()
{
this._uvTransform.texture = this._texture;
this.refresh();
}
/**
* multiplies uvs only if uploadUvTransform is false
* call it after you change uvs manually
* make sure that texture is valid
*/
multiplyUvs()
{
if (!this.uploadUvTransform)
{
this._uvTransform.multiplyUvs(this.uvs);
}
}
/**
* Refreshes uvs for generated meshes (rope, plane)
* sometimes refreshes vertices too
*
* @param {boolean} [forceUpdate=false] if true, matrices will be updated any case
*/
refresh(forceUpdate)
{
if (this._uvTransform.update(forceUpdate))
{
this._refresh();
}
}
/**
* re-calculates mesh coords
* @protected
*/
_refresh()
{
/* empty */
}
/**
* Returns the bounds of the mesh as a rectangle. The bounds calculation takes the worldTransform into account.
*
*/
_calculateBounds()
{
// TODO - we can cache local bounds and use them if they are dirty (like graphics)
this._bounds.addVertices(this.transform, this.vertices, 0, this.vertices.length);
}
/**
* Tests if a point is inside this mesh. Works only for TRIANGLE_MESH
*
* @param {PIXI.Point} point - the point to test
* @return {boolean} the result of the test
*/
containsPoint(point)
{
if (!this.getBounds().contains(point.x, point.y))
{
return false;
}
this.worldTransform.applyInverse(point, tempPoint);
const vertices = this.vertices;
const points = tempPolygon.points;
const indices = this.indices;
const len = this.indices.length;
const step = this.drawMode === Mesh.DRAW_MODES.TRIANGLES ? 3 : 1;
for (let i = 0; i + 2 < len; i += step)
{
const ind0 = indices[i] * 2;
const ind1 = indices[i + 1] * 2;
const ind2 = indices[i + 2] * 2;
points[0] = vertices[ind0];
points[1] = vertices[ind0 + 1];
points[2] = vertices[ind1];
points[3] = vertices[ind1 + 1];
points[4] = vertices[ind2];
points[5] = vertices[ind2 + 1];
if (tempPolygon.contains(tempPoint.x, tempPoint.y))
{
return true;
}
}
return false;
}
/**
* The texture that the mesh uses.
*
* @member {PIXI.Texture}
*/
get texture()
{
return this._texture;
}
set texture(value) // eslint-disable-line require-jsdoc
{
if (this._texture === value)
{
return;
}
this._texture = value;
if (value)
{
// wait for the texture to load
if (value.baseTexture.hasLoaded)
{
this._onTextureUpdate();
}
else
{
value.once('update', this._onTextureUpdate, this);
}
}
}
/**
* The tint applied to the mesh. This is a hex value. A value of 0xFFFFFF will remove any tint effect.
*
* @member {number}
* @default 0xFFFFFF
*/
get tint()
{
return core.utils.rgb2hex(this.tintRgb);
}
set tint(value) // eslint-disable-line require-jsdoc
{
this.tintRgb = core.utils.hex2rgb(value, this.tintRgb);
}
}
/**
* Different drawing buffer modes supported
*
* @static
* @constant
* @type {object}
* @property {number} TRIANGLE_MESH
* @property {number} TRIANGLES
*/
Mesh.DRAW_MODES = {
TRIANGLE_MESH: 0,
TRIANGLES: 1,
};
