mirror of
https://github.com/azures04/crafatar.git
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4b920d57e8
some were just left in there from debugging and could be removed or set to logging.debug some others could be compacted a few errors were written to stdout instead of stderr
199 lines
8.0 KiB
JavaScript
199 lines
8.0 KiB
JavaScript
// Skin locations are based on the work of Confuser, with 1.8 updates by Jake0oo0
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// https://github.com/confuser/serverless-mc-skin-viewer
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// Permission to use & distribute https://github.com/confuser/serverless-mc-skin-viewer/blob/master/LICENSE
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var logging = require("./logging");
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var fs = require("fs");
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var Canvas = require("canvas");
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var Image = Canvas.Image;
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var exp = {};
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// draws the helmet on to the +skin_canvas+
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// using the skin from the +model_ctx+ at the +scale+
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exp.draw_helmet = function(skin_canvas, model_ctx, scale) {
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//Helmet - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 40*scale, 8*scale, 8*scale, 8*scale, 10*scale, 13/1.2*scale, 8*scale, 8*scale);
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//Helmet - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 32*scale, 8*scale, 8*scale, 8*scale, 2*scale, 3/1.2*scale, 8*scale, 8*scale);
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//Helmet - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 40*scale, 0, 8*scale, 8*scale, -3*scale, 5*scale, 8*scale, 8*scale);
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};
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// draws the head on to the +skin_canvas+
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// using the skin from the +model_ctx+ at the +scale+
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exp.draw_head = function(skin_canvas, model_ctx, scale) {
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//Head - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 8*scale, 8*scale, 8*scale, 8*scale, 10*scale, 13/1.2*scale, 8*scale, 8*scale);
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//Head - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 0, 8*scale, 8*scale, 8*scale, 2*scale, 3/1.2*scale, 8*scale, 8*scale);
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//Head - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 8*scale, 0, 8*scale, 8*scale, -3*scale, 5*scale, 8*scale, 8*scale);
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};
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// draws the body on to the +skin_canvas+
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// using the skin from the +model_ctx+ at the +scale+
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// parts are labeled as if drawn from the skin's POV
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exp.draw_body = function(rid, skin_canvas, model_ctx, scale) {
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if (skin_canvas.height === 32 * scale) {
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logging.debug(rid + "uses old skin format");
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//Left Leg
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//Left Leg - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 4*scale, 20*scale, 4*scale, 12*scale, -16*scale, 34.4/1.2*scale, 4*scale, 12*scale);
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//Right Leg
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//Right Leg - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 0*scale, 20*scale, 4*scale, 12*scale, 4*scale, 26.4/1.2*scale, 4*scale, 12*scale);
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//Right Leg - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 4*scale, 20*scale, 4*scale, 12*scale, 8*scale, 34.4/1.2*scale, 4*scale, 12*scale);
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//Arm Left
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//Arm Left - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 44*scale, 20*scale, 4*scale, 12*scale, -20*scale, 20/1.2*scale, 4*scale, 12*scale);
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//Arm Left - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.drawImage(skin_canvas, 44*scale, 16*scale, 4*scale, 4*scale, 0, 16*scale, 4*scale, 4*scale);
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//Body
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//Body - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 20*scale, 20*scale, 8*scale, 12*scale, 8*scale, 20/1.2*scale, 8*scale, 12*scale);
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//Arm Right
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//Arm Right - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 40*scale, 20*scale, 4*scale, 12*scale, 0, 16/1.2*scale, 4*scale, 12*scale);
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//Arm Right - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 44*scale, 20*scale, 4*scale, 12*scale, 4*scale, 20/1.2*scale, 4*scale, 12*scale);
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//Arm Right - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 44*scale, 16*scale, 4*scale, 4*scale, -16*scale, 16*scale, 4*scale, 4*scale);
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} else {
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logging.debug(rid + "uses new skin format");
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//Left Leg
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//Left Leg - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 20*scale, 52*scale, 4*scale, 12*scale, 12*scale, 34.4/1.2*scale, 4*scale, 12*scale);
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//Right Leg
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//Right Leg - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 0, 20*scale, 4*scale, 12*scale, 4*scale, 26.4/1.2*scale, 4*scale, 12*scale);
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//Right Leg - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 4*scale, 20*scale, 4*scale, 12*scale, 8*scale, 34.4/1.2*scale, 4*scale, 12*scale);
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//Arm Left
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//Arm Left - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 36*scale, 52*scale, 4*scale, 12*scale, 16*scale, 20/1.2*scale, 4*scale, 12*scale);
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//Arm Left - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.drawImage(skin_canvas, 36*scale, 48*scale, 4*scale, 4*scale, 0, 16*scale, 4*scale, 4*scale);
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//Body
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//Body - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 20*scale, 20*scale, 8*scale, 12*scale, 8*scale, 20/1.2*scale, 8*scale, 12*scale);
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//Arm Right
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//Arm Right - Right
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model_ctx.setTransform(1,0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 40*scale, 20*scale, 4*scale, 12*scale, 0, 16/1.2*scale, 4*scale, 12*scale);
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//Arm Right - Front
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model_ctx.setTransform(1,-0.5,0,1.2,0,0);
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model_ctx.drawImage(skin_canvas, 44*scale, 20*scale, 4*scale, 12*scale, 4*scale, 20/1.2*scale, 4*scale, 12*scale);
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//Arm Right - Top
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model_ctx.setTransform(-1,0.5,1,0.5,0,0);
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model_ctx.scale(-1,1);
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model_ctx.drawImage(skin_canvas, 44*scale, 16*scale, 4*scale, 4*scale, -16*scale, 16*scale, 4*scale, 4*scale);
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}
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};
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// sets up the necessary components to draw the skin model
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// uses the +img+ skin with options of drawing
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// the +helm+ and the +body+
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// callback contains error, image buffer
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exp.draw_model = function(rid, img, scale, helm, body, callback) {
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var image = new Image();
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image.onerror = function(err) {
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logging.error(rid + "render error: " + err.stack);
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callback(err, null);
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};
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image.onload = function() {
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var width = 64 * scale;
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var original_height = (image.height === 32 ? 32 : 64);
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var height = original_height * scale;
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var model_canvas = new Canvas(20 * scale, (body ? 44.8 : 17.6) * scale);
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var skin_canvas = new Canvas(width, height);
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var model_ctx = model_canvas.getContext("2d");
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var skin_ctx = skin_canvas.getContext("2d");
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skin_ctx.drawImage(image,0,0,64,original_height);
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//Scale it
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scale_image(skin_ctx.getImageData(0,0,64,original_height), skin_ctx, 0, 0, scale);
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if (body) {
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exp.draw_body(rid, skin_canvas, model_ctx, scale);
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}
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exp.draw_head(skin_canvas, model_ctx, scale);
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if (helm) {
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exp.draw_helmet(skin_canvas, model_ctx, scale);
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}
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model_canvas.toBuffer(function(err, buf){
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if (err) {
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logging.error(rid + "error creating buffer: " + err);
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}
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callback(err, buf);
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});
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};
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image.src = img;
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};
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// helper method to open a render from +renderpath+
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// callback contains error, image buffer
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exp.open_render = function(rid, renderpath, callback) {
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fs.readFile(renderpath, function (err, buf) {
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if (err) {
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logging.error(rid + "error while opening skin file: " + err);
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}
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callback(err, buf);
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});
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};
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// scales an image from the +imagedata+ onto the +context+
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// scaled by a factor of +scale+ with options +d_x+ and +d_y+
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function scale_image(imageData, context, d_x, d_y, scale) {
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var width = imageData.width;
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var height = imageData.height;
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context.clearRect(0,0,width,height); //Clear the spot where it originated from
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for(var y = 0; y < height; y++) { // height original
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for(var x = 0; x < width; x++) { // width original
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//Gets original colour, then makes a scaled square of the same colour
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var index = (x + y * width) * 4;
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context.fillStyle = "rgba(" + imageData.data[index+0] + "," + imageData.data[index+1] + "," + imageData.data[index+2] + "," + imageData.data[index+3] + ")";
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context.fillRect(d_x + x*scale, d_y + y*scale, scale, scale);
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}
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}
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}
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module.exports = exp;
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