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titlescene.go
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/
titlescene.go
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// Copyright 2015,2016,2017,2018,2019,2020,2021 SeukWon Kang (kasworld@gmail.com)
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package wasmclientgl
import (
"fmt"
"syscall/js"
)
type TitleScene struct {
camera js.Value
light js.Value
scene js.Value
jsoTitle js.Value
}
func NewTitleScene() *TitleScene {
ts := &TitleScene{}
ts.camera = ThreeJsNew("PerspectiveCamera", 60, 1, 1, HelperSize)
ts.scene = ThreeJsNew("Scene")
ts.light = ThreeJsNew("PointLight", 0xffffff, 1)
SetPosition(ts.light,
0,
0,
HelperSize/2,
)
ts.scene.Call("add", ts.light)
axisHelper := ThreeJsNew("AxesHelper", HelperSize)
ts.scene.Call("add", axisHelper)
// set title camera pos
SetPosition(ts.camera,
0, 0, HelperSize/2,
)
ts.camera.Call("lookAt",
ThreeJsNew("Vector3",
0, 0, 0,
),
)
ts.camera.Set("zoom", 3.0)
ts.camera.Call("updateProjectionMatrix")
return ts
}
func (ts *TitleScene) Resize(w, h float64) {
ts.camera.Set("aspect", w/h)
ts.camera.Call("updateProjectionMatrix")
}
func (ts *TitleScene) addTitle() {
str := "Goguelike-GL"
geo := MakeTitleTextGeometry(str, 80)
geoInfo := GetGeoInfo(geo)
co := gRnd.Uint32() & 0x00ffffff
mat := gPoolColorMaterial.Get(fmt.Sprintf("#%06x", co))
mat.Set("opacity", 1)
ts.jsoTitle = ThreeJsNew("Mesh", geo, mat)
SetPosition(ts.jsoTitle,
0-geoInfo.Len[0]/2,
0,
0,
)
ts.scene.Call("add", ts.jsoTitle)
}
func MakeTitleTextGeometry(str string, size float64) js.Value {
geo := ThreeJsNew("TextGeometry", str,
map[string]interface{}{
"font": gFont_helvetiker_regular,
"size": size,
"height": 5,
"curveSegments": size / 3,
"bevelEnabled": true,
"bevelThickness": size / 8,
"bevelSize": size / 16,
"bevelOffset": 0,
"bevelSegments": size / 8,
})
return geo
}