learn-wgpu/assets/js/46.61045c81.js

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The eye therefore still ")]),t._v("\n            "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// lies on the circle made by the target and eye.")]),t._v("\n            camera"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("eye "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" camera"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("target "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("forward "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" right "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("self")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("speed"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),s("span",{pre:!0,attrs:{class:"token function"}},[t._v("normalize")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" forward_mag"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("if")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("self")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("is_left_pressed "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n            camera"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("eye "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" camera"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("target "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("forward "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v(" right "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("self")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("speed"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),s("span",{pre:!0,attrs:{class:"token function"}},[t._v("normalize")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" forward_mag"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n    "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n")])])]),s("p",[t._v("This code is not perfect. The camera slowly moves back when you rotate it. It works for our purposes though. Feel free to improve it!")]),t._v(" "),s("p",[t._v("We still need to plug this into our existing code to make it do anything. Add the controller to "),s("code",[t._v("State")]),t._v(" and create it in "),s("code",[t._v("new()")]),t._v(".")]),t._v(" "),s("div",{staticClass:"language-rust extra-class"},[s("pre",{pre:!0,attrs:{class:"language-rust"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("struct")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token type-definition class-name"}},[t._v("State")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n    "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// ...")]),t._v("\n    camera"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("Camera")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v("\n    "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// NEW!")]),t._v("\n    camera_controller"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" 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If you run the code now you should see a pentagon with our tree texture that you can rotate around and zoom into with the wasd/arrow keys.")]),t._v(" "),s("h2",{attrs:{id:"challenge"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#challenge"}},[t._v("#")]),t._v(" Challenge")]),t._v(" "),s("p",[t._v("Have our model rotate on its own independently of the camera. "),s("em",[t._v("Hint: you'll need another matrix for this.")])]),t._v(" "),s("WasmExample",{attrs:{example:"tutorial6_uniforms"}}),t._v(" "),s("AutoGithubLink")],1)}),[],!1,null,null,null);s.default=e.exports}}]);