Method RenderSetup

gui/chart.go:506–520

RenderSetup is called by the renderer before drawing this graphic It overrides the original panel RenderSetup Calculates the model matrix and transfer to OpenGL.

(gs *gls.GLS, rinfo *core.RenderInfo)

// It overrides the original panel RenderSetup
// Calculates the model matrix and transfer to OpenGL.
func (sx *chartScaleX) RenderSetup(gs *gls.GLS, rinfo *core.RenderInfo) {

	// Sets model matrix
	var mm math32.Matrix4
	sx.SetModelMatrix(gs, &mm)

	// Transfer model matrix uniform
	location := sx.uniMatrix.Location(gs)
	gs.UniformMatrix4fv(location, 1, false, &mm[0])

	// Sets bounds in OpenGL window coordinates and transfer to shader
	_, _, _, height := gs.GetViewport()
	location = sx.uniBounds.Location(gs)
	gs.Uniform4f(location, sx.pospix.X, float32(height)-sx.pospix.Y, sx.width, sx.height)
}

//
// ChartScaleY is a panel with LINE geometry which draws the chart Y vertical scale axis,