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add constrain for wechat logo default ratio #15627

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merged 2 commits into from
Jul 6, 2023
Merged

add constrain for wechat logo default ratio #15627

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4dbdd49
add constrain for wechat logo default ratio
mmyduckx Jul 5, 2023
3c8b433
fix typo
mmyduckx Jul 5, 2023
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7 changes: 4 additions & 3 deletions templates/wechatgame/first-screen.ejs
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Original file line number Diff line number Diff line change
Expand Up @@ -179,9 +179,10 @@ function initProgressVertexBuffer() {
}

function updateVertexBuffer() {
// the ratio value may be adjusted according to the expected image display effect
const widthRatio = image.width / canvas.width * 1.35 * displayRatio;
const heightRatio = image.height / canvas.height * 1.35 * displayRatio;
// By default, maintain aspect ratio by constraining display at 200px height
const defaultRatio = 200 / image.height;
const widthRatio = image.width / canvas.width * 1.35 * defaultRatio * displayRatio;
const heightRatio = image.height / canvas.height * 1.35 * defaultRatio * displayRatio;
const heightOffset = 1/6; // canvas:(-1,1) -> (button, top); heightOffset = (5/12) * (-2) + 1 = 1/6
const vertices = new Float32Array([
widthRatio, heightOffset - heightRatio, 1.0, 1.0,
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