graphics

package
v0.0.0-...-d51a67d Latest Latest
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 Go to latest Published: Jul 26, 2020 License: Apache-2.0 Imports: 16 Imported by: 0

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Index

Constants

View Source 
const (
	MillisPerSecond = 1000
	SleepDuration   = time.Millisecond * 5
)

Variables

This section is empty.

Functions

func InitOpenGL 

func InitOpenGL()

InitOpenGL initializes OpenGL and returns an initialized program.

func MakeLightVao 

func MakeLightVao(vertices []float32, program uint32, vbo uint32) uint32

func MakeObjectVao 

func MakeObjectVao(vertices []float32, program uint32) (uint32, uint32)

func MakeTexture 

func MakeTexture(path string) uint32

func Show 

func Show(keepOpen *bool)

Show demonstrates most ImGui features that were ported to Go. This function tries to recreate the original demo window as closely as possible.

In theory, if both windows would provide the identical functionality, then the wrapper would be complete.

Types

type Camera 

type Camera struct {
	CameraPos   mgl.Vec3
	CameraFront mgl.Vec3
	CameraUp    mgl.Vec3

	Yaw         float64
	Pitch       float64
	LastX       float64
	LastY       float64
	Fov         float64
	Sensitivity float64

	FirstMouse bool
}

func GetCamera 

func GetCamera() Camera

func (*Camera) MouseCallback 

func (c *Camera) MouseCallback(w *glfw.Window, xpos float64, ypos float64)

func (*Camera) ScrollCallback 

func (c *Camera) ScrollCallback(w *glfw.Window, xoff float64, yoff float64)

type Clipboard 

type Clipboard struct {
	Platform Platform
}

func (Clipboard) SetText 

func (board Clipboard) SetText(text string)

func (Clipboard) Text 

func (board Clipboard) Text() (string, error)

type GLFW 

type GLFW struct {
	ImguiIO imgui.IO

	Window *glfw.Window
	// contains filtered or unexported fields
}

GLFW implements a platform based on github.com/go-gl/glfw (v3.2).

func InitGlfw 

func InitGlfw(io imgui.IO, cnf *config.Config) (*GLFW, error)

initGlfw initializes glfw and returns a Window to use.

func (*GLFW) ClipboardText 

func (platform *GLFW) ClipboardText() (string, error)

ClipboardText returns the current Clipboard text, if available.

func (*GLFW) DisplaySize 

func (platform *GLFW) DisplaySize() [2]float32

DisplaySize returns the dimension of the display.

func (*GLFW) Dispose 

func (platform *GLFW) Dispose()

Dispose cleans up the resources.

func (*GLFW) FramebufferSize 

func (platform *GLFW) FramebufferSize() [2]float32

FramebufferSize returns the dimension of the framebuffer.

func (*GLFW) NewFrame 

func (platform *GLFW) NewFrame()

NewFrame marks the begin of a render pass. It forwards all current state to imgui IO.

func (*GLFW) PostRender 

func (platform *GLFW) PostRender()

PostRender performs a buffer swap.

func (*GLFW) ProcessEvents 

func (platform *GLFW) ProcessEvents()

ProcessEvents handles all pending Window events.

func (*GLFW) SetClipboardText 

func (platform *GLFW) SetClipboardText(text string)

SetClipboardText sets the text as the current Clipboard text.

func (*GLFW) ShouldStop 

func (platform *GLFW) ShouldStop() bool

ShouldStop returns true if the Window is to be closed.

type GLFWClientAPI 

type GLFWClientAPI string

GLFWClientAPI identifies the render system that shall be initialized.

type OpenGL3 

type OpenGL3 struct {
	// contains filtered or unexported fields
}

OpenGL3 implements a renderer based on github.com/go-gl/gl (v3.2-core).

func NewOpenGL3 

func NewOpenGL3(io imgui.IO) (*OpenGL3, error)

NewOpenGL3 attempts to initialize a renderer. An OpenGL context has to be established before calling this function.

func (*OpenGL3) Dispose 

func (renderer *OpenGL3) Dispose()

Dispose cleans up the resources.

func (*OpenGL3) PreRender 

func (renderer *OpenGL3) PreRender(clearColor [3]float32)

PreRender clears the framebuffer.

func (*OpenGL3) Render 

func (renderer *OpenGL3) Render(displaySize [2]float32, framebufferSize [2]float32, drawData imgui.DrawData)

Render translates the ImGui draw data to OpenGL3 commands.

type Platform 

type Platform interface {
	// ShouldStop is regularly called as the abort condition for the program loop.
	ShouldStop() bool
	// ProcessEvents is called once per render loop to dispatch any pending events.
	ProcessEvents()
	// DisplaySize returns the dimension of the display.
	DisplaySize() [2]float32
	// FramebufferSize returns the dimension of the framebuffer.
	FramebufferSize() [2]float32
	// NewFrame marks the begin of a render pass. It must update the imgui IO state according to user input (mouse, keyboard, ...)
	NewFrame()
	// PostRender marks the completion of one render pass. Typically this causes the display buffer to be swapped.
	PostRender()
	// ClipboardText returns the current text of the Clipboard, if available.
	ClipboardText() (string, error)
	// SetClipboardText sets the text as the current text of the Clipboard.
	SetClipboardText(text string)
}

Platform covers mouse/keyboard/gamepad inputs, cursor shape, timing, windowing.

type Renderer 

type Renderer interface {
	// PreRender causes the display buffer to be prepared for new output.
	PreRender(clearColor [3]float32)
	// Render draws the provided imgui draw data.
	Render(displaySize [2]float32, framebufferSize [2]float32, drawData imgui.DrawData)
}

Renderer covers rendering imgui draw data.

type Shader 

type Shader struct {
	Id uint32
}

func ShaderFactory 

func ShaderFactory(vertexShaderSource string, fragmentShaderSource string) Shader

func (*Shader) SetFloat 

func (s *Shader) SetFloat(name string, value float32)

func (*Shader) SetInt 

func (s *Shader) SetInt(name string, value int32)

Wrapping the ugly gl function calls

func (*Shader) SetMat2 

func (s *Shader) SetMat2(name string, value mgl.Mat2)

func (*Shader) SetMat3 

func (s *Shader) SetMat3(name string, value mgl.Mat3)

func (*Shader) SetMat4 

func (s *Shader) SetMat4(name string, value mgl.Mat4)

func (*Shader) SetVec2 

func (s *Shader) SetVec2(name string, value mgl.Vec2)

func (*Shader) SetVec3 

func (s *Shader) SetVec3(name string, value mgl.Vec3)

func (*Shader) SetVec4 

func (s *Shader) SetVec4(name string, value mgl.Vec4)

func (*Shader) Use 

func (s *Shader) Use()

type StringError 

type StringError string

StringError describes a basic error with static information.

func (StringError) Error 

func (err StringError) Error() string

Error returns the string itself.

Source Files

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