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implement isometric blocks in hotbar

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This commit is contained in:
LabyStudio
2022-02-04 16:09:19 +01:00
parent 058d9b86cd
commit 04e38ff7c3
4 changed files with 84 additions and 36 deletions
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src/js/net/minecraft/client/render/isometric/IsometricRenderer.js
+28 -26
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@@ -2,20 +2,22 @@ window.IsometricRenderer = class {
// http://jsfiddle.net/xzL58dha/3/
static render(stack, texture, triangle) {
IsometricRenderer.drawTriangle(
stack,
texture,
triangle.p0.x, triangle.p0.y,
triangle.p1.x, triangle.p1.y,
triangle.p2.x, triangle.p2.y,
triangle.t0.u, triangle.t0.v,
triangle.t1.u, triangle.t1.v,
triangle.t2.u, triangle.t2.v
);
static render(stack, triangles, callback) {
for (let triangle of triangles) {
IsometricRenderer.drawTriangle(
stack,
triangle.p0.x, triangle.p0.y,
triangle.p1.x, triangle.p1.y,
triangle.p2.x, triangle.p2.y,
triangle.t0.u, triangle.t0.v,
triangle.t1.u, triangle.t1.v,
triangle.t2.u, triangle.t2.v,
callback
);
}
}
static createTriangles(p1, p2, p3, p4) {
static createTriangles(texture, p1, p2, p3, p4) {
// clear triangles out
let triangles = [];
@@ -28,8 +30,8 @@ window.IsometricRenderer = class {
let dx2 = p3.x - p2.x;
let dy2 = p3.y - p2.y;
let imgW = image.naturalWidth;
let imgH = image.naturalHeight;
let imgW = texture.naturalWidth;
let imgH = texture.naturalHeight;
for (let sub = 0; sub < subs; ++sub) {
let curRow = sub / subs;
@@ -100,7 +102,7 @@ window.IsometricRenderer = class {
}
static drawTriangle(stack, image, x0, y0, x1, y1, x2, y2, sx0, sy0, sx1, sy1, sx2, sy2) {
static drawTriangle(stack, x0, y0, x1, y1, x2, y2, sx0, sy0, sx1, sy1, sx2, sy2, callback) {
stack.save();
// Clip the output to the on-screen triangle boundaries.
@@ -114,40 +116,40 @@ window.IsometricRenderer = class {
/*
ctx.transform(m11, m12, m21, m22, dx, dy) sets the context transform matrix.
The context matrix is:
[ m11 m21 dx ]
[ m12 m22 dy ]
[ 0 0 1 ]
Coords are column vectors with a 1 in the z coord, so the transform is:
x_out = m11 * x + m21 * y + dx;
y_out = m12 * x + m22 * y + dy;
From Maxima, these are the transform values that map the source
coords to the dest coords:
sy0 (x2 - x1) - sy1 x2 + sy2 x1 + (sy1 - sy2) x0
[m11 = - -----------------------------------------------------,
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
sy1 y2 + sy0 (y1 - y2) - sy2 y1 + (sy2 - sy1) y0
m12 = -----------------------------------------------------,
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
sx0 (x2 - x1) - sx1 x2 + sx2 x1 + (sx1 - sx2) x0
m21 = -----------------------------------------------------,
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
sx1 y2 + sx0 (y1 - y2) - sx2 y1 + (sx2 - sx1) y0
m22 = - -----------------------------------------------------,
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
sx0 (sy2 x1 - sy1 x2) + sy0 (sx1 x2 - sx2 x1) + (sx2 sy1 - sx1 sy2) x0
dx = ----------------------------------------------------------------------,
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
sx0 (sy2 y1 - sy1 y2) + sy0 (sx1 y2 - sx2 y1) + (sx2 sy1 - sx1 sy2) y0
dy = ----------------------------------------------------------------------]
sx0 (sy2 - sy1) - sx1 sy2 + sx2 sy1 + (sx1 - sx2) sy0
@@ -172,7 +174,7 @@ window.IsometricRenderer = class {
//
// TODO: figure out if drawImage goes faster if we specify the rectangle that
// bounds the source coords.
stack.drawImage(image, 0, 0);
callback();
stack.restore();
};
}