mdx-m3-viewer
Version:
A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.
60 lines • 2.33 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ImageTexture = exports.detectMime = exports.isImageSource = void 0;
const math_1 = require("../common/math");
const isformat_1 = require("../common/isformat");
const texture_1 = require("./texture");
/**
* Checks if the given source is a supported image texture source.
*/
function isImageSource(src) {
return src instanceof ImageData || src instanceof HTMLImageElement || src instanceof HTMLCanvasElement || src instanceof HTMLVideoElement;
}
exports.isImageSource = isImageSource;
/**
* Detects whether the given buffer is a supported format, and if so returns the mime.
* The supported formats are PNG, JPEG, GIF, and WebP.
*/
function detectMime(buffer) {
if ((0, isformat_1.isPng)(buffer)) {
return 'image/png';
}
if ((0, isformat_1.isJpeg)(buffer)) {
return 'image/jpeg';
}
if ((0, isformat_1.isGif)(buffer)) {
return 'image/gif';
}
if ((0, isformat_1.isWebP)(buffer)) {
return 'image/webp';
}
return '';
}
exports.detectMime = detectMime;
/**
* A texture handler for image sources.
*/
class ImageTexture extends texture_1.default {
constructor(src, resourceData) {
super(resourceData);
const gl = this.viewer.gl;
this.webglResource = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, this.webglResource);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, src);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
if ((0, math_1.isPowerOfTwo)(src.width) && (0, math_1.isPowerOfTwo)(src.height)) {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
gl.generateMipmap(gl.TEXTURE_2D);
}
else {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
// Required for NPOT textures.
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
}
this.width = src.width;
this.height = src.height;
}
}
exports.ImageTexture = ImageTexture;
//# sourceMappingURL=imagetexture.js.map